Overview
cold wa - ve (cold wave) refers to the signal from the high - latitude areas of cold air, in particular under the background of rapidly strengthened to move south along the large range of vigorous cool, windy and rainy and snowy weather cold wa - ve (cold wave) refers to the signal from the high - latitude areas of cold air, in particular under the background of rapidly strengthened to move south along the large range of vigorous cool, windy and rainy and snowy weather . this cold air southward invasion process reaches a certain intensity of the standard referred to as a cold wave this cold air southward invasion process reaches a certain intensity of the standard referred to as a cold wave .
is a large cold wave weather process, often lead to a variety of severe meteorological disaster is a large cold wave weather process, often lead to a variety of severe meteorological disaster . cold wave occurs due to the different areas and seasons, and its strength is also not the same, but it brought by disastrous weather and agricultural production and daily life of the people affected are generally large, agriculture, animal husbandry, transport, electricity,Even the boost people's health are affected by cold wave weather cold wave occurs due to the different areas and seasons, and its strength is also not the same, but it brought by disastrous weather and agricultural production and daily life of the people affected are generally large, agriculture, animal husbandry, transport, electricity,Even the boost people's health are affected by cold wave weather .
of the widespread effects of the disasters caused by severe and diverse, and there's a cold wave weather is proving to be a direct cause, such as typhoon, storm, frost, cold, icy roads and snow or the like, is an indirect one, some, such as low temperature, deteriorating air quality such as of the widespread effects of the disasters caused by severe and diverse, and there's a cold wave weather is proving to be a direct cause, such as typhoon, storm, frost, cold, icy roads and snow or the like, is an indirect one, some, such as low temperature, deteriorating air quality such as . 1 1.
Features
cold outburst in different geographical settings have different characteristics in the desert in the northwest Loess Plateau and cold outburst in different geographical settings have different characteristics in the desert in the northwest Loess Plateau and ., showed less blustery snow, had become a sandstorm weather , showed less blustery snow, had become a sandstorm weather .
in the grasslands in the wind, blowing snow and cold weather in the grasslands in the wind, blowing snow and cold weather . in North China and Huang - Huai, often snowy cold spell to in North China and Huang - Huai, often snowy cold spell to .
in the northeast is the more violent gale, heavy snow, with snowfall totals of in the northeast is the more violent gale, heavy snow, with snowfall totals of . in Jiangnan and consort with winds and rains in Jiangnan and consort with winds and rains .
Standard
Cold Wave in meteorology, there are strict definitions and standards, but in different countries and regions are not the same as the standard cold wave of China's weather observatory Cold Wave in meteorology, there are strict definitions and standards, but in different countries and regions are not the same as the standard cold wave of China's weather observatory . e 2006 annual extreme wave heights of the standard is a standard 1: winter led to widespread strong cool, windy weather, often accompanied by rain, snow, large - scale activities of cold air, which makes the temperature in the 24 hours falling up to 8 DEG C by means of standard e 2006 annual extreme wave heights of the standard is a standard 1: winter led to widespread strong cool, windy weather, often accompanied by rain, snow, large - scale activities of cold air, which makes the temperature in the 24 hours falling up to 8 DEG C by means of standard .
2: cold air in winter in a large - scale activities, often causing widespread the vigorous, strong winds, often accompanied by rain, snow, the weather standard 2: cold air in winter in a large - scale activities, often causing widespread the vigorous, strong winds, often accompanied by rain, snow, the weather standard . 3: winter led to widespread strong cool, windy weather,Rain is usually accompanied by large - scale activity of the cold standard 3: winter led to widespread strong cool, windy weather,Rain is usually accompanied by large - scale activity of the cold standard .
4: polar winter from cold regions to lower latitudes in the invasion of strong cold air activity standard 4: polar winter from cold regions to lower latitudes in the invasion of strong cold air activity standard . 5: winter led to widespread strong cool, windy weather, often accompanied by rain, snow, large - scale activity of the cold weather 5: winter led to widespread strong cool, windy weather, often accompanied by rain, snow, large - scale activity of the cold weather .
American channel is specified, at least 15 U.S. states of below normal temperatures, wherein at least five states with lower than normal temperature is 15 C, and lasts for two days of the cold air outbreaks known as cold wave 1 1.
Genesis
cold air is mainly in: (i), (2) on the surface of Novoya Zemlya and Novaya Zemlya Expedition cold air is mainly in: (i), (2) on the surface of Novoya Zemlya and Novaya Zemlya Expedition . the the .
3 Iceland to 3 Iceland to . Nanyang surface located in the high Arctic and Siberian, Mongolian Plateau neighbourhood, one end of the year by oblique sunlight, the ground accept the heat of the sunlight rarely Nanyang surface located in the high Arctic and Siberian, Mongolian Plateau neighbourhood, one end of the year by oblique sunlight, the ground accept the heat of the sunlight rarely .
especially in the winter, And what's going south, the northern hemisphere during the sunlight irradiation angle smaller and, therefore, the earth surface sunlight heat less and less, the surface temperature becomes very low in the Arctic Ocean via especially in the winter, And what's going south, the northern hemisphere during the sunlight irradiation angle smaller and, therefore, the earth surface sunlight heat less and less, the surface temperature becomes very low in the Arctic Ocean via . winter, with temperatures often below -20. degree. C.,the lowest when the to - be 60 - 70 DEG C
1 C warmer, ranging in age from 5 - 40 DEG C or below 1 C warmer, ranging in age from 5 - 40 DEG C or below . Arctic and Siberia because of the very low temperatures, the atmospheric density is greatly increased, and the ever shrinking air sinks, so that the pressure increase and, thus, to form a powerful, broad and deep cold high - pressure air masses Arctic and Siberia because of the very low temperatures, the atmospheric density is greatly increased, and the ever shrinking air sinks, so that the pressure increase and, thus, to form a powerful, broad and deep cold high - pressure air masses .
when this cold high power being strengthened and consequently to a certain extent, which could knock the tides, in tremendous quantities to China have flown, and the cold snap is when this cold high power being strengthened and consequently to a certain extent, which could knock the tides, in tremendous quantities to China have flown, and the cold snap is . every outbreak after the Siberia cold air will be reduced and the part of the air pressure is also decreased to every outbreak after the Siberia cold air will be reduced and the part of the air pressure is also decreased to .
but after a while,cold air to re - accumulate, gestates a new outbreak of the Cold Wave but after a while,cold air to re - accumulate, gestates a new outbreak of the Cold Wave .
Intrusion Path
intrusion of cold wave in China mainly include the four paths: (1) Road: from western Siberia into Chinese Xinjiang, Gansu Corridor and the southeastward; (2) Road: from Siberia and Mongolia after entering China, the Hetao Area to the Central - south; (3) Road: from the eastern region of Siberia or Mongolia into the eastern china's northeast, the south by North China; (4) plus East West Road: the cold air from the east from the Loop and south downstream, the cold air from the southeast of Qinghai, two cold air often in Loess Plateau in the east of the Yellow River, Yangtze River between the confluence, confluence is a large range of snowy weather, the cool air streams then merge southward,Strong winds and marked down intrusion of cold wave in China mainly include the four paths: (1) Road: from western Siberia into Chinese Xinjiang, Gansu Corridor and the southeastward; (2) Road: from Siberia and Mongolia after entering China, the Hetao Area to the Central - south; (3) Road: from the eastern region of Siberia or Mongolia into the eastern china's northeast, the south by North China; (4) plus East West Road: the cold air from the east from the Loop and south downstream, the cold air from the southeast of Qinghai, two cold air often in Loess Plateau in the east of the Yellow River, Yangtze River between the confluence, confluence is a large range of snowy weather, the cool air streams then merge southward,Strong winds and marked down .
Adverse Impact
cold wave across vast swaths of snowcold wave across vast swaths of snow.
Agriculture
cold wave weather impact on agriculture in cold wave weather impact on agriculture in . maximum cold air bring drop in temperature may reach 10 or even 20. degree. C. C. or more, typically in excess of crop tolerance to cold, frost damage caused to crops occurred or frost
from different areas and different kinds of crop physiology of cold temperature also have certain limit, such as the northern spring wheat, legumes and oilseed crops genera hardy, can withstand - 7 ~ - 10 deg.C, radish can be resistance - 6 deg.C, cabbage can be resistance - 4 deg.C, corn, potato only tolerant - 3 ~ 2 - DEG C and ,Various plants and different growth stages of cold hardening and also different ,Various plants and different growth stages of cold hardening and also different .
for the majority of plants, when the temperature is lowered to 0. degree. C., then there would be an obvious victim history, almost every time during cold surges can cause large areas of crops affected, the extent of the damage due to cold air intrusion range can vary significantly from history, almost every time during cold surges can cause large areas of crops affected, the extent of the damage due to cold air intrusion range can vary significantly from .
Cold Wave in transit to Moliro, where temperatures dropped precipitously, freezing could be a day to days Cold Wave in transit to Moliro, where temperatures dropped precipitously, freezing could be a day to days . Northwest, North China with a large decrease in temperature, "the amplitude is small, it can be freezing and frost Northwest, North China with a large decrease in temperature, "the amplitude is small, it can be freezing and frost .
as in January 1955, due to continuous cold waves fulminant southward, Wuhan appears - 14. 6. degree. C.,Shanghai is a two - blade sword 2. degree. C., is a Nanning - 2.1 C and the extreme lowest Hainan Island also appeared in a rare frost
Traffic
Cold Wave going with winds, rain and snow and cool weather will cause strong winds, low visibility, ice and snow from accumulating on roads and railways, and offshore operations is a large threat to the safety, seriously affect the production / living of people such as Cold Wave going with winds, rain and snow and cool weather will cause strong winds, low visibility, ice and snow from accumulating on roads and railways, and offshore operations is a large threat to the safety, seriously affect the production / living of people such as ., December 7, 2003, under the influence of the strong cold front, Beijing has let loose a snowfall, and subsequently to the icy road, the night of the Beijing city is paralyzed traffic, congestion in the lane, so that the motor could move, many passengers missed the plane and train traffic affected , December 7, 2003, under the influence of the strong cold front, Beijing has let loose a snowfall, and subsequently to the icy road, the night of the Beijing city is paralyzed traffic, congestion in the lane, so that the motor could move, many passengers missed the plane and train traffic affected .
gale winds can cause a train derailment and even subversive gale winds can cause a train derailment and even subversive . train set of China's wind business,In Xinjiang of the Lanzhou - Xinjiang Railway in Hami, in the vicinity of the train set of China's wind business,In Xinjiang of the Lanzhou - Xinjiang Railway in Hami, in the vicinity of the .
to the "100 km wind zone", in the Tianshan Dabancheng area by means of wind zone " to the "100 km wind zone", in the Tianshan Dabancheng area by means of wind zone ". from 1961 to 1982, the train winds up to as many as 10 from 1961 to 1982, the train winds up to as many as 10 .
whenever the gale season, trains often not running to time whenever the gale season, trains often not running to time . gale on civil aviation is also very significant, cold, cold air, the average speed of 15 m / s and above, its gust will reach 25m / s or more, and the duration is long, winds made take - off and landing of the aircraft and landing gear tire ruptured easily occurs, or the like of the incident gale on civil aviation is also very significant, cold, cold air, the average speed of 15 m / s and above, its gust will reach 25m / s or more, and the duration is long, winds made take - off and landing of the aircraft and landing gear tire ruptured easily occurs, or the like of the incident .
rime and glaze of traffic impact that this could threaten the flight safety of airplaneaircraft in the clouds with supercooled droplets in flight, wings, propellers would have been flooded, affecting aircraft aerodynamic performance doomed the rime and glaze of traffic impact that this could threaten the flight safety of airplaneaircraft in the clouds with supercooled droplets in flight, wings, propellers would have been flooded, affecting aircraft aerodynamic performance doomed the . therefore, Winter Flight Safety, modern aircraft are attached to both of the deicing device therefore, Winter Flight Safety, modern aircraft are attached to both of the deicing device .
when the road surface is formed on the glaze when the road traffic - control signboard 40 is because the ground freezes, save in the traffic accident also increases accordingly, on mountain roads with a total area of ice is also very dangerous, often making the car toward the cliff when the road surface is formed on the glaze when the road traffic - control signboard 40 is because the ground freezes, save in the traffic accident also increases accordingly, on mountain roads with a total area of ice is also very dangerous, often making the car toward the cliff . freezing rain and snow on traffic impact of the cold wave, strong wind and weather, but in the warm and cold air at a junction part results in rainy and snowy weather, rainy and snowy weather itself on the highway,Railway and people travel a lot for the influence of cold wave of the arrival of the cooling air temperature is low, in order to melt snow, some areas will still be there will be frost and ice, and transportation that would adversely affect the freezing rain and snow on traffic impact of the cold wave, strong wind and weather, but in the warm and cold air at a junction part results in rainy and snowy weather, rainy and snowy weather itself on the highway,Railway and people travel a lot for the influence of cold wave of the arrival of the cooling air temperature is low, in order to melt snow, some areas will still be there will be frost and ice, and transportation that would adversely affect the .
cold wave weather lasts longer, will further add to the road of ice thickness, which in turn causes the closing highways, with consequent increase in the amount of the length of the hold; that would further aggravate the railway transportation pressure of cold wave weather lasts longer, will further add to the road of ice thickness, which in turn causes the closing highways, with consequent increase in the amount of the length of the hold; that would further aggravate the railway transportation pressure of . road of thickened ice would be likely to add more traffic accidents, brought more security risks if road of thickened ice would be likely to add more traffic accidents, brought more security risks if .
grid is further compounded by the destruction, may threaten the railway grid,thereby affecting the normal operation of the train grid is further compounded by the destruction, may threaten the railway grid,thereby affecting the normal operation of the train . continuing freezing weather would again lead to a flight delay continuing freezing weather would again lead to a flight delay .
blast of arctic air in 1987 as a cold snap in late November, Harbin, Shenyang, Beijing, Urumqi Railway Bureau under the jurisdiction of the People's Republic of China a lot like the station frozen, snow - buried, signal communication failure, the Train hindered blast of arctic air in 1987 as a cold snap in late November, Harbin, Shenyang, Beijing, Urumqi Railway Bureau under the jurisdiction of the People's Republic of China a lot like the station frozen, snow - buried, signal communication failure, the Train hindered . After rain or snow, icy roads, accidents increased After rain or snow, icy roads, accidents increased .
Power
In general the early winter or late Winter and early season, cold weather produced precipitation in the cloud has a cooling liquid after the object is touching the ground directly will freeze to ice, forming glaze In general the early winter or late Winter and early season, cold weather produced precipitation in the cloud has a cooling liquid after the object is touching the ground directly will freeze to ice, forming glaze . Furthermore cold wave of freezing rain is also caused to cause the wire to lay on the glazed frost, glaze was the most harmful to the power supply line is interrupted, the HV lines of tall steel tower in the snowy weather, may be subject to 2 ~ 3 times of the weight, but if there was ever a rime, is likely to be subjected to 10 ~ 20 times the weight of the wire, wire or branch occur on the glaze, the wire icing, now contracts, the combination of wind - induced vibration and the influence of the weight of the glaze,the wire telephone line and a winless run in which the burden to be press - broken several kilometers or even dozens of utility poles in a row, caused by a communication interruption, seriously affect the local agricultural production as well as Furthermore cold wave of freezing rain is also caused to cause the wire to lay on the glazed frost, glaze was the most harmful to the power supply line is interrupted, the HV lines of tall steel tower in the snowy weather, may be subject to 2 ~ 3 times of the weight, but if there was ever a rime, is likely to be subjected to 10 ~ 20 times the weight of the wire, wire or branch occur on the glaze, the wire icing, now contracts, the combination of wind - induced vibration and the influence of the weight of the glaze,the wire telephone line and a winless run in which the burden to be press - broken several kilometers or even dozens of utility poles in a row, caused by a communication interruption, seriously affect the local agricultural production as well as .
history on many cities because of an excessively high pressure line while the rows of the rime history on many cities because of an excessively high pressure line while the rows of the rime . followed by the collapse of the Facility and of the influence of Cold snap brings the gale weather during windy weather arrived, should prevent "Wind" and "Flashover" caused by the short - circuit failures, the builders and the elevated area of the appropriate people to adjust the working period to ensure the safety and construction industry is faced with the cold test must be the response from the followed by the collapse of the Facility and of the influence of Cold snap brings the gale weather during windy weather arrived, should prevent "Wind" and "Flashover" caused by the short - circuit failures, the builders and the elevated area of the appropriate people to adjust the working period to ensure the safety and construction industry is faced with the cold test must be the response from the .
In addition cold waveAlso will aggravate the load of the power sector, according to the electricity sector and years of experience, the colder, the load becomes large, and therefore increase with an annual increase of In addition cold waveAlso will aggravate the load of the power sector, according to the electricity sector and years of experience, the colder, the load becomes large, and therefore increase with an annual increase of ., is a safe, stable electric power to be supplied services, the Beijing Electric Power Co as early as before the coming winter, a heating unit associated with the city of Barcelona, for each hotspot, boiler room and other places of the electrical equipment and power transmission line for special inspection, and with the customers and established a liaison mechanism, due to influence of the heating power supply to supply power to the , is a safe, stable electric power to be supplied services, the Beijing Electric Power Co as early as before the coming winter, a heating unit associated with the city of Barcelona, for each hotspot, boiler room and other places of the electrical equipment and power transmission line for special inspection, and with the customers and established a liaison mechanism, due to influence of the heating power supply to supply power to the .
In addition, in the case of electric to resident safety and reliability of the high requirements,power equipment will reduce the number of times of planned outage period and actively adopt the live - wire work such as technical measures, to the maximum extent possible, to arrange heating regions without power - off equipment In addition, in the case of electric to resident safety and reliability of the high requirements,power equipment will reduce the number of times of planned outage period and actively adopt the live - wire work such as technical measures, to the maximum extent possible, to arrange heating regions without power - off equipment . 2 2.
Advantageous Effects
cold wave also has the beneficial effects of cold wave also has the beneficial effects of . geographers study the cold snap helps the earth heat exchange geographers study the cold snap helps the earth heat exchange .
With the latitude increasing, the incoming solar radiation energy is gradually weakened, and hence the evolution of the Earth, tropical, temperate and boreal With the latitude increasing, the incoming solar radiation energy is gradually weakened, and hence the evolution of the Earth, tropical, temperate and boreal . Cold Wave to incorporate a large amount of cool air to the tropical which made the ground heat exchange is performed on a large scale, which is very helpful for the nature of the eco - balance, maintain the species of lush Cold Wave to incorporate a large amount of cool air to the tropical which made the ground heat exchange is performed on a large scale, which is very helpful for the nature of the eco - balance, maintain the species of lush .
meteorologists say the cold snap is a favorable assurance for the record or field.For example, China affected by the monsoon, and winter dry climate, low For example, China affected by the monsoon, and winter dry climate, low .
but whenever southward cold wave, there is often a wide range of rain and snow weather, and alleviate the problem of winter drought, but whenever southward cold wave, there is often a wide range of rain and snow weather, and alleviate the problem of winter drought,. benefit than that in the first three "Mega Ruixue Year" this saying why can the materials in the region for thousands of years?This is because in the snow with a high nitrogen content, is ordinary water of 5 times or more, can make the soil nitrogen increase benefit than that in the first three "Mega Ruixue Year" this saying why can the materials in the region for thousands of years?This is because in the snow with a high nitrogen content, is ordinary water of 5 times or more, can make the soil nitrogen increase .
snow also can accelerate the organic matter decomposition, thereby increasing the organic fertilizer in soil snow also can accelerate the organic matter decomposition, thereby increasing the organic fertilizer in soil . snow - covered in winter crops, like cotton quilt plays a cold - insulated plate snow - covered in winter crops, like cotton quilt plays a cold - insulated plate .
: as the saying goes, "winter is not cold, no Feng", which also has its scientific reason for : as the saying goes, "winter is not cold, no Feng", which also has its scientific reason for . crop pest control experts believe the cold snap at the low temperature, is currently the most effective natural "pesticides", may kill a lot of lurking in the soil in the winter of pests and pathogens, or inhibition of its breeding and the reduction in the pest according to agrotechnical crop pest control experts believe the cold snap at the low temperature, is currently the most effective natural "pesticides", may kill a lot of lurking in the soil in the winter of pests and pathogens, or inhibition of its breeding and the reduction in the pest according to agrotechnical .
throughout the survey data,Where the snow covered in winter it will be a source of pesticide can save 60% or more of the cold front can also bring up throughout the survey data,Where the snow covered in winter it will be a source of pesticide can save 60% or more of the cold front can also bring up . .
wind resources, scientists believe the wind is a precious resource and pollution - free power wind resources, scientists believe the wind is a precious resource and pollution - free power . have the attention of the wind energy plants of the island, and anthesis stage of the power generation efficiency is usually 1.5 times
3 3.
Early Warning Signal
According to China Meteorological Administration, the National Meteorological Center issued in 2010 by the "Central Meteorological Station meteorological disaster warning issued by Customs of the People's Republic of China, the cold wave warning signal into an orange warning, the yellow warning, blue warning tertiary According to China Meteorological Administration, the National Meteorological Center issued in 2010 by the "Central Meteorological Station meteorological disaster warning issued by Customs of the People's Republic of China, the cold wave warning signal into an orange warning, the yellow warning, blue warning tertiary . but some provinces and cities in light of the conditions we can continue with the 2007 Grade I meteorological disaster early warning, the cold wave warning signal warning divided into red, orange, yellow, blue warning four but some provinces and cities in light of the conditions we can continue with the 2007 Grade I meteorological disaster early warning, the cold wave warning signal warning divided into red, orange, yellow, blue warning four .
Orange Warning
expected in the next 48 hours that 2 and more Provinces that most of the areas in the average temperature or the minimum temperature was 16 C with 6 - grade gale, north of the Yangtze River and its area more than half of the average temperature or the minimum air temperature will drop by 12 C in winter in the Middle and Lower Reaches of the Yangtze River (in spring and autumn, the Jianghuai Region) and the lowest temperature drops to 4 DEG C, dropping to below 2 C.
Yellow Warning
expected in the next 48 hours that 2 and more Provinces that most of the areas in the average temperature or the minimum temperature dropped by 12 C and 5 - grade gale, the Yangtze River and the north half of above average or minimum temperature will be decreased 10 C above, in the Middle and Lower Reaches of the Yangtze River in the winter (spring and autumn of Jianghuai) and the lowest temperature drops to below 4 C.
Blue Warning
expected in the next 48 hours that 2 and more Provinces that most of the areas in the average temperature or the minimum temperature drop of 10. degree. C. or higher and 5 - grade gale, north of the Yangtze River and its area more than half of the average temperature or the minimum air temperature will drop by 8 C in winter in the Middle and Lower Reaches of the Yangtze River (in spring and autumn, the Jianghuai Region) and the lowest temperature drops to below 4 C. Oct. 31, 2012, the observatory issued a blue warning
cold wave is expected by 31 October to 2 November 20, the northern and eastern of Xinjiang, Gansu, Ningxia, Qinghai, northern Shaanxi,Western of Inner Mongolia will have a 6 - 10 deg.C, cooling, wherein, in northwestern Xinjiang, western Gansu, western Inner Mongolia, parts of which will cause a decrease of 12 ~ 14 degrees Celsius, the local area can be up to 14; in the above - mentioned areas and will have a 5 - 7 which is northerly, Xinjiang wind - force of mountain pass area can amount to 8 ~ 10 stages 7 7.
Defense
Personal
weather forecast should be strengthened, according to the advance of cold wave accurate message or alarm 1, when the temperature drops, should notice to add garment heat preservation, in particular, to pay attention to your face and hands, the warm - keeping weather forecast should be strengthened, according to the advance of cold wave accurate message or alarm 1, when the temperature drops, should notice to add garment heat preservation, in particular, to pay attention to your face and hands, the warm - keeping . 2 and shutting doors, securing the outdoor structures 3 2 and shutting doors, securing the outdoor structures 3 .
, , . 4 falls beware of slippery conditions, the elderly and patients, especially cardiovascular disease, asthma and so on all sensitive crowd: stay out 4 falls beware of slippery conditions, the elderly and patients, especially cardiovascular disease, asthma and so on all sensitive crowd: stay out .
5, drew the attention of the rest from the fatigue 5, drew the attention of the rest from the fatigue . 6, beware of gas poisoning, especially using the coal stove in the family - - beware 6, beware of gas poisoning, especially using the coal stove in the family - - beware .
5 5.
Agriculture
1, due to the cold air and strong wind come, shed facility should pay attention to strengthening prevention of collapsed scaffolding or gale opened a film and thus the aggravated damage resistant and humidity regulating in the psychrometric 1, due to the cold air and strong wind come, shed facility should pay attention to strengthening prevention of collapsed scaffolding or gale opened a film and thus the aggravated damage resistant and humidity regulating in the psychrometric . 2, rape, green manure and lying areas on the orange grove should be paid attention to the underground drainage ditch cleaning, accumulated water preventing icing aggravate freezing injury; leafy vegetables available straw covering, alleviate the harm of frozen 2, rape, green manure and lying areas on the orange grove should be paid attention to the underground drainage ditch cleaning, accumulated water preventing icing aggravate freezing injury; leafy vegetables available straw covering, alleviate the harm of frozen .
3, vegetables or flowers greenhouse covering with straw mats, films used as insulating material, is improved so that the temperature in the 3, vegetables or flowers greenhouse covering with straw mats, films used as insulating material, is improved so that the temperature in the . 4, poultry and livestock farmers like to do a cold insulation work shed, poultry breeding shed should also increase the illumination time, to increase the laying rate; aquaculture pond water injection temperature, and an appropriate reduction in the quantity of feed 4, poultry and livestock farmers like to do a cold insulation work shed, poultry breeding shed should also increase the illumination time, to increase the laying rate; aquaculture pond water injection temperature, and an appropriate reduction in the quantity of feed .
Traffic
1, should strengthen supervision and warning with the 1, should strengthen supervision and warning with the . All the units shall strengthen the emergency duty, strengthen supervision and early warning, to make maximum use of existing monitoring instruments, thereby strengthening the cold spell of high winds at the waters of ship monitoring, a timely reminder about wading units, enterprises, and preventing preparation; 2, more emphasis should be given careful and detailed arrangements for it All the units shall strengthen the emergency duty, strengthen supervision and early warning, to make maximum use of existing monitoring instruments, thereby strengthening the cold spell of high winds at the waters of ship monitoring, a timely reminder about wading units, enterprises, and preventing preparation; 2, more emphasis should be given careful and detailed arrangements for it .
all maritime sectors want to particularly "dangerous goods" ship, sand carrier, the unpowered ship, ship construction and ship mooring operations performed; more attention is put at the airworthiness Guan, would like to remind the maritime fishing, aquaculture and fishing harbour sheltered; Rescue Bureau, aviation corps must reasonably arrange the standby ship dynamic, strengthen in key shipping lanes, accident - prone,severe wind receiving waters of duty standby work; navigation channel departments shall enhance the management of waterway security, ensure the applicability of the real time pharos such as railway facilities; port management departments should supervise and urge enterprises to make rational arrangement of port facilities on the port, to avoid strong winds, which could trigger large - scale destruction of equipment accident, high altitude falling buildings and outdoor working personnel frostbite accident; 3, 3 in 1 "Emergency Response all maritime sectors want to particularly "dangerous goods" ship, sand carrier, the unpowered ship, ship construction and ship mooring operations performed; more attention is put at the airworthiness Guan, would like to remind the maritime fishing, aquaculture and fishing harbour sheltered; Rescue Bureau, aviation corps must reasonably arrange the standby ship dynamic, strengthen in key shipping lanes, accident - prone,severe wind receiving waters of duty standby work; navigation channel departments shall enhance the management of waterway security, ensure the applicability of the real time pharos such as railway facilities; port management departments should supervise and urge enterprises to make rational arrangement of port facilities on the port, to avoid strong winds, which could trigger large - scale destruction of equipment accident, high altitude falling buildings and outdoor working personnel frostbite accident; 3, 3 in 1 "Emergency Response . is to be noted that not only plays a role in transportation system that can work, while at the same time joint - related meteorological, oceanographic, fisheries department defended that work together, to form the anti - anti - blast of arctic air is the resultant of the is to be noted that not only plays a role in transportation system that can work, while at the same time joint - related meteorological, oceanographic, fisheries department defended that work together, to form the anti - anti - blast of arctic air is the resultant of the .
Event
A High Wind Event
Li appeared in 1974 in 1974 in Ningxia People's Republic of China on April 29, Ningxia saw a formation of the gale, Yinchuan, silver north wind in 11 grades, Huinong and up to 12 stages Li appeared in 1974 in 1974 in Ningxia People's Republic of China on April 29, Ningxia saw a formation of the gale, Yinchuan, silver north wind in 11 grades, Huinong and up to 12 stages . along Helanshan area crop seedling root is even with the wind or sand bury area. The total value of crops with an area of 13.3 hectares of trees have
from being cracked or fallen, the uprooting of a vast sandy ditches from being cracked or fallen, the uprooting of a vast sandy ditches . is filled in, the end portions being struck off by 40 cm thick soil, pasture grass from being shaved, cannot graze is filled in, the end portions being struck off by 40 cm thick soil, pasture grass from being shaved, cannot graze .
9 April 1993, 11 stage blast of arctic air is nearly 100 metres from Beijing Railway Station will be a huge billboard with the foundation wall are brought together,2 people were killed and dozens injured 9 April 1993, 11 stage blast of arctic air is nearly 100 metres from Beijing Railway Station will be a huge billboard with the foundation wall are brought together,2 people were killed and dozens injured . 1995 Nov 7 - 8 October, subject to the southward of Siberian strong cold wave, North China's southern peninsula, and the lower reaches of the Yangtze River, had a 5 - 6 levels, Rafale 8 ~ 10 degree of northerly gale weather 1995 Nov 7 - 8 October, subject to the southward of Siberian strong cold wave, North China's southern peninsula, and the lower reaches of the Yangtze River, had a 5 - 6 levels, Rafale 8 ~ 10 degree of northerly gale weather .
Shandong Tai 'an, Jining, Qingdao, Zaozhuang, Linyi, Weifang, Rizhao, Liaocheng and Dezhou in 9 prefectures (cities) of more than 40 counties (cities) for a total of 35 people were killed, 121 missing, injured 320; Qingdao, Rizhao, two cities in 19 of their boat failed to return; there are 8 million vegetable greenhouse and 600 more wintry warm type greenhouse farming of chickens had been damaged by gales,38 million chickens died; 19 million houses were damaged, 3700 houses have collapsed or burned, the trees 4. 4 million; 2100 pieces of damaged fishing boats; resulted in direct economic losses of more than 10 billion yuan (US $ Taihu Lake in Jiangsu Province have 10 pieces of the ship sank, 32 people overboard, one person was killed and 24 Taihu Lake in Jiangsu Province have 10 pieces of the ship sank, 32 people overboard, one person was killed and 24 .
Suzhou Yangtze River, the boat had sunk, 7 missing and the Shanghai Yangtze River area of any body of water 24 ships ran aground, killing 1 person dead, 1 missing as winds of Anhui Suzhou Yangtze River, the boat had sunk, 7 missing and the Shanghai Yangtze River area of any body of water 24 ships ran aground, killing 1 person dead, 1 missing as winds of Anhui . 11 people were killed and 94 injured; destroyed 1,300 hectares of vegetable greenhouse, grain loss 80. 7 kg of cotton, 1. 5 kilograms;Over 10,000 houses collapsed, damaging the house 21. 4 million; 140 vessels capsized; reverse fault trees 9. 9 million, broken down power supply, communication pole 4000; and resulted in direct losses of 1.06 billion yuan (US $
2003 April 8 - 9, a blast of arctic air following an attack on Turpan, large range of wind, the wind is strong, with maximum sustained winds of up to 10 ~ 11 stages, instantaneous wind 12 degree, a 36 - hour, local community life, agricultural production is taking its toll on 2003 April 8 - 9, a blast of arctic air following an attack on Turpan, large range of wind, the wind is strong, with maximum sustained winds of up to 10 ~ 11 stages, instantaneous wind 12 degree, a 36 - hour, local community life, agricultural production is taking its toll on . demanded a civil affairs department statistics, with a total population of 36,000 people, to crops with 5. 7 million mu, strong winds also caused severe flooding,direct economic loss is 2700 yuan
2007 Feb. 28, 2011 2: 05, bound for Urumqi from Akzo 5806 times of passenger trains in this encounter with the 13 - stage attack of the gale, 11 cars were overturned, causing major casualties and line interruption 
Freeze Injury Events
1950 - 1990 to 40 years, Beijing's suburb of wheat was 7 times for serious cold damage, with an average of 5 ~ 7 times in January, 1993, 1995 and appeared twice more for serious cold damage with 1950 - 1990 to 40 years, Beijing's suburb of wheat was 7 times for serious cold damage, with an average of 5 ~ 7 times in January, 1993, 1995 and appeared twice more for serious cold damage with . 1993 frostbited in wheat seedling 4. 81%, and dead stems 8. 95%, 100%
frostbite rates reached the 1995 freeze injury of wheat immature death very serious frostbite rates reached the 1995 freeze injury of wheat immature death very serious . Xinjiang from 1961 to 1983, the heavier frost there six times, with an average of 4 years, which resulted in the 1974 - 1975, the Junggar Basin of Mosuowan, Che Pai Zi, Owusu,Manas and other winter wheat seedling was 95% Xinjiang from 1961 to 1983, the heavier frost there six times, with an average of 4 years, which resulted in the 1974 - 1975, the Junggar Basin of Mosuowan, Che Pai Zi, Owusu,Manas and other winter wheat seedling was 95% .
east since 1984 in a larger area of winter wheat seedling and dead seedling for 11 times, average 3 - year cycle of heavy frost, the cumulative area of the region were destroyed two years winter wheat area and the sum of the east since 1984 in a larger area of winter wheat seedling and dead seedling for 11 times, average 3 - year cycle of heavy frost, the cumulative area of the region were destroyed two years winter wheat area and the sum of the . 1993 ~ 1994 winter were extremely frost damage, due to the winter before the temperature is high, illumination is insufficient, the vigorous growth of seedling, mid - November dump of rain or snow, the temperature from 7 ~ 8 drops abruptly C - 16 C, and there were strong winds, resulting in the injury of the wheat seedling in the deaths,causing huge agricultural losses 1993 ~ 1994 winter were extremely frost damage, due to the winter before the temperature is high, illumination is insufficient, the vigorous growth of seedling, mid - November dump of rain or snow, the temperature from 7 ~ 8 drops abruptly C - 16 C, and there were strong winds, resulting in the injury of the wheat seedling in the deaths,causing huge agricultural losses .
1999 Dec. 23 - 26 of Low Temperature and Frost, Guangdong Zhanjiang banana victims of an area of 84 mu, accounting for 74% of the total area of 
Snow Disaster Events
In early April 1983, the southern mountains of western cold wave and heavy snow thickness of 1m, only 30% of pups in Wensu Country, the losses which left In early April 1983, the southern mountains of western cold wave and heavy snow thickness of 1m, only 30% of pups in Wensu Country, the losses which left . 1956 ~ 1957, 1965, 1966, 1976 - 1977 and during winter, Tibet appeared in three features, the snow deep, long duration, and severity of the disaster in the snowstorm 1956 ~ 1957, 1965, 1966, 1976 - 1977 and during winter, Tibet appeared in three features, the snow deep, long duration, and severity of the disaster in the snowstorm .
in Ili prefecture in northern Xinjiang from mid - January and late state of continuous snowfall for 10 days, the total rainfall of 80 mm or more, and the lowest temperature drops to - 40. degree. C., Xinjiang due to snow, avalanche, transportation and telecommunications, airport suspended for 6 days, the deaths of 82 people.sheep as well as the widespread death occurred for 1977 Oct 24 ~ 29 days, most of the areas in the north had snow falling, North China, Northeast China has dropped heavy rain (snow), Inner Mongolia Heavy Blizzard, the biggest northern, snowfall process up to 58 mm, and the Strategies of the north, Chifeng, north, and north of Zhelimu League, Xingan League, Hulun Buir pastoral area snowfall is 25 - 47 mm, the above - mentioned areas snow thickness 16 33cm ~, 60 ~ 100 cm, for nearly 40 years, with heavy snowfall blocking some roads and disrupted traffic, caused severe blizzards 1977 Oct 24 ~ 29 days, most of the areas in the north had snow falling, North China, Northeast China has dropped heavy rain (snow), Inner Mongolia Heavy Blizzard, the biggest northern, snowfall process up to 58 mm, and the Strategies of the north, Chifeng, north, and north of Zhelimu League, Xingan League, Hulun Buir pastoral area snowfall is 25 - 47 mm, the above - mentioned areas snow thickness 16 33cm ~, 60 ~ 100 cm, for nearly 40 years, with heavy snowfall blocking some roads and disrupted traffic, caused severe blizzards .
According to incomplete statistics, livestock deaths and more than 3 million head,Livestock accounts for a total of 2 / 3; and the Strategies of 56 million head of livestock deaths with a mortality of up to 10. 8%; Chifeng 60 million head of livestock in a semi - starved state, 30 million head of livestock cannot be taken out of the herd, killed 10 million head of livestock; 'GreenGuandong north under freezing rain was, the wire was caused by severe icing in the district, the Post and Telecommunication interrupt 2008 battered China's" refers to the period from January 10, 2008 in China in large - scale cryogenic freezing rain and snow disasters like 2008 battered China's" refers to the period from January 10, 2008 in China in large - scale cryogenic freezing rain and snow disasters like .
in the Port of Shanghai, Zhejiang, Jiangsu, Anhui, Jiangxi, Henan, Hubei, Hunan, Guangdong, Guangxi, Chongqing, Sichuan, Guizhou, Yunnan,Shaanxi, Gansu, Qinghai, Ningxia, Xinjiang and Xinjiang Production and Construction Corps from over 20 provinces, autonomous regions and municipalities directly under the different degree by cryogenic freezing rain and snow disaster influence in the Port of Shanghai, Zhejiang, Jiangsu, Anhui, Jiangxi, Henan, Hubei, Hunan, Guangdong, Guangxi, Chongqing, Sichuan, Guizhou, Yunnan,Shaanxi, Gansu, Qinghai, Ningxia, Xinjiang and Xinjiang Production and Construction Corps from over 20 provinces, autonomous regions and municipalities directly under the different degree by cryogenic freezing rain and snow disaster influence . As of February 24, killing 129 people, four people were missing, 166 million; and the crops with an area of 1.78 hectares of cropland suffered from drought, 8764 mu, mu of farmland were 2536 houses 48. 5 million, and damage to the housing 168. 6 - a - million; and deaths due to a direct economic loss of 151.65 billion yuan of the damaged forest area near
2. 79 billion mu, only 3 million wild animals by snow froze or frostbite;with a total population of 127 million where Hunan, Hubei, Guizhou, Guangxi, Jiangxi, Anhui, Sichuan, in seven provinces were among the most severely affected by Hunan, Hubei, Guizhou, Guangxi, Jiangxi, Anhui, Sichuan, in seven provinces were among the most severely affected by .
Antifreezing Measures
to prevent frost damage in addition to the above - mentioned measures, it is also possible in winter and cool - down period before the arrival of a variety of measures to prevent the Government and the relevant departments according to their respective functions and duties, do a good anti - cold wave of the emergency and rescue work; take care to prevent coldness and keep warm; agriculture, aquaculture, animal husbandry on the grasslands shall actively take, frost, freezing and other measures, to minimize the loss and wind prevention work to prevent frost damage in addition to the above - mentioned measures, it is also possible in winter and cool - down period before the arrival of a variety of measures to prevent the Government and the relevant departments according to their respective functions and duties, do a good anti - cold wave of the emergency and rescue work; take care to prevent coldness and keep warm; agriculture, aquaculture, animal husbandry on the grasslands shall actively take, frost, freezing and other measures, to minimize the loss and wind prevention work .
Outdoor Temperature
With all the increase in the surface layer and temperature conditions, such as laying smoke stack, mounting the blower and the like, the upset sunk, on the ground layer has a significant effect of raising temperature, wherein the fumigation is typically near the formation temperature: l ~ 2 With all the increase in the surface layer and temperature conditions, such as laying smoke stack, mounting the blower and the like, the upset sunk, on the ground layer has a significant effect of raising temperature, wherein the fumigation is typically near the formation temperature: l ~ 2 .
Vegetation Cover
Using mulch protects plants into which the above - ground or underground for fear of frozen parts, reducing the long - wave radiation, defense wintry blast, which plays a role in functions Using mulch protects plants into which the above - ground or underground for fear of frozen parts, reducing the long - wave radiation, defense wintry blast, which plays a role in functions . covered with horizontal and vertical coverage of both, including directly in or on the cover crop and fruit tree, have booths, as it is covered, and we have the type of dressing to prevent frost damage on covered with horizontal and vertical coverage of both, including directly in or on the cover crop and fruit tree, have booths, as it is covered, and we have the type of dressing to prevent frost damage on .
windbreak and also, may be used as the circumstances may require different types and different angle of inclination of the windbreak design windbreak and also, may be used as the circumstances may require different types and different angle of inclination of the windbreak design .
Spraying Agent
Fruit tree antifreezing Fruit tree antifreezing . is mainly used for the chemicals sprayed to prevent frost damage, using growth hormone is a growth control, enhanced the ability of freeze - is mainly used for the chemicals sprayed to prevent frost damage, using growth hormone is a growth control, enhanced the ability of freeze - .
chemical methods to prevent frost damage is a kind of emergency measures, but must be kept short - term cold wave forecast of cooling chemical methods to prevent frost damage is a kind of emergency measures, but must be kept short - term cold wave forecast of cooling . In addition, in case cold wave occurs, it is also a possible different crops with simple cold remedies such as prying In addition, in case cold wave occurs, it is also a possible different crops with simple cold remedies such as prying .
mud hilling, mulch, or weed seedlings like mud hilling, mulch, or weed seedlings like . early - season broadcast seedling of potato, soybean, it is possible to promptly set the small shed early - season broadcast seedling of potato, soybean, it is possible to promptly set the small shed .
itwas winter crops, according to the injury to the seedlings and the timely application of nitrogenous fertilizer and potash fertilizer,per mu (1 /) with urea and potassium chloride for 3 - 5 kg, in order to promote the plants resume growth itwas winter crops, according to the injury to the seedlings and the timely application of nitrogenous fertilizer and potash fertilizer,per mu (1 /) with urea and potassium chloride for 3 - 5 kg, in order to promote the plants resume growth .
Identification Method
Every winter there are words of strong cold air southward, which caused China to a large area of the large cooling Every winter there are words of strong cold air southward, which caused China to a large area of the large cooling . China a lot of press is called "cold", this is not the correct China a lot of press is called "cold", this is not the correct .
: This phenomenon is called "Cold Wave" then what is the "cold wave", what is the "cold"?How do they differ?herein below and the specific explanation: cold wave will be a kind of disastrous weather, the number of times of occurrence of the many activities in a broad range of : This phenomenon is called "Cold Wave" then what is the "cold wave", what is the "cold"?How do they differ?herein below and the specific explanation: cold wave will be a kind of disastrous weather, the number of times of occurrence of the many activities in a broad range of . coldwave, suggests that it is the cold air of the ebb and flow torrent that means coldwave, suggests that it is the cold air of the ebb and flow torrent that means .
but doesn't detract from the invasion of cold air over all cold wave, cool air is generally invade somewhere after, if you can make those places of the temperature in a day (24 hours) is reduced by more than 10 c, at the same time of day and the lowest temperature below 5 DEG C, that's why we're cool and cold wave across the country called but doesn't detract from the invasion of cold air over all cold wave, cool air is generally invade somewhere after, if you can make those places of the temperature in a day (24 hours) is reduced by more than 10 c, at the same time of day and the lowest temperature below 5 DEG C, that's why we're cool and cold wave across the country called . but due to geographical conditions and climatic conditions, the standard is not the same as but due to geographical conditions and climatic conditions, the standard is not the same as .
Cold Wave of Cold Wave Cause:intrusion of cold wave of China, mainly in the Arctic regions, Siberia and Mongolia, it's like the outbreak of the southward cold high Cold Wave of Cold Wave Cause:intrusion of cold wave of China, mainly in the Arctic regions, Siberia and Mongolia, it's like the outbreak of the southward cold high . these areas are mostly distributed in the arctic, winter is long and lack, everywhere was covered with ice and snow, stay in those areas of the mass of air that seems to lie in a huge natural icehouse inside, colder, drier and, when this mass accumulation of a certain degree, the gas pressure to build up to the far south is high, and the like stored in the mountain range of the flood, he got a chance, just to the south of the atmospheric pressure is overflowed and poured, forming a cold snap Cold snap brings these areas are mostly distributed in the arctic, winter is long and lack, everywhere was covered with ice and snow, stay in those areas of the mass of air that seems to lie in a huge natural icehouse inside, colder, drier and, when this mass accumulation of a certain degree, the gas pressure to build up to the far south is high, and the like stored in the mountain range of the flood, he got a chance, just to the south of the atmospheric pressure is overflowed and poured, forming a cold snap Cold snap brings .
results:cold wave of the invasion, is often rapidly changing wind direction, wind speed increases, the sudden pressure rise, temperature drop sharply, while there is also a chance of rain, snow, frost and freezing phenomena occur results:cold wave of the invasion, is often rapidly changing wind direction, wind speed increases, the sudden pressure rise, temperature drop sharply, while there is also a chance of rain, snow, frost and freezing phenomena occur . Cold Wave southward, in Northwest China and Inner Mongolia and the north of the often large number of sandstorm days Cold Wave southward, in Northwest China and Inner Mongolia and the north of the often large number of sandstorm days .
in the north of the district is generally dry, with occasional snowfall over the Huaihe River after in the north of the district is generally dry, with occasional snowfall over the Huaihe River after ., , .
increased chance of precipitation in winter, the cold is generally 3 ~ 8 days every once in a generation, but strong cold wave, the annual average of 4 times increased chance of precipitation in winter, the cold is generally 3 ~ 8 days every once in a generation, but strong cold wave, the annual average of 4 times . occur approximately at the end of October to January,in some years and in late February but also occur when cold wave Cold wave occur approximately at the end of October to January,in some years and in late February but also occur when cold wave Cold wave .
to southern cities on a large scale, the warm air is also "retreat", therefore passing through areas where, first of all subjected to the influence of the warm air, a significant temperature increase to southern cities on a large scale, the warm air is also "retreat", therefore passing through areas where, first of all subjected to the influence of the warm air, a significant temperature increase . if the country had been under control in the relative warm air, the cold wave front in the warm air conveying, also will make the temperature rise of the violent weather if the country had been under control in the relative warm air, the cold wave front in the warm air conveying, also will make the temperature rise of the violent weather .
so often in the warmer for a day or two before the cold wave Cold wave so often in the warmer for a day or two before the cold wave Cold wave . invading China path: invading cold wave of China and not all the time, depending on the Arctic and Siberia cold air which part of the highest pressure,Which part of China's lowest barometric invading China path: invading cold wave of China and not all the time, depending on the Arctic and Siberia cold air which part of the highest pressure,Which part of China's lowest barometric .
is also influenced by Chinese mountains that blocked the effects of is also influenced by Chinese mountains that blocked the effects of . then chill is a what?Be clear what is the cold snap, you need to understand what is then chill is a what?Be clear what is the cold snap, you need to understand what is .
ocean surface water of the ocean, the gigantic scale, a relatively steady rate, slowly along a certain direction on a regular basis to constantly flow, referred to as ocean currents, ocean current, also called ocean surface water of the ocean, the gigantic scale, a relatively steady rate, slowly along a certain direction on a regular basis to constantly flow, referred to as ocean currents, ocean current, also called . ocean currents which, by their nature, may be amortized over a period of warm and cold ocean currents which flow two ocean currents which, by their nature, may be amortized over a period of warm and cold ocean currents which flow two .
Where, seawater temperature passing through the centers of the field sea water temperature high is referred to as the warm Gulf Stream, generally from low latitude to high - latitudes are warm ocean currents; and where the flow of ocean currents, seawater temperature than the temperature of seawater through said lower cold, generally flows from the high - latitude | latitude of the current cold snap all belong Where, seawater temperature passing through the centers of the field sea water temperature high is referred to as the warm Gulf Stream, generally from low latitude to high - latitudes are warm ocean currents; and where the flow of ocean currents, seawater temperature than the temperature of seawater through said lower cold, generally flows from the high - latitude | latitude of the current cold snap all belong . things flowing in the direction of ocean currents, the former generally warm nature,Only the southern - hemisphere westerly drift, due to the Antarctic continent and sea ice, sea temperatures with relatively low currents produce upwellings nature things flowing in the direction of ocean currents, the former generally warm nature,Only the southern - hemisphere westerly drift, due to the Antarctic continent and sea ice, sea temperatures with relatively low currents produce upwellings nature .
of influence: the currents in the main impact of climate on the coast of the mainland has a great influence on the cold snap will flow through the sea and coastal area of the temperature decrease, rainfall decreases of influence: the currents in the main impact of climate on the coast of the mainland has a great influence on the cold snap will flow through the sea and coastal area of the temperature decrease, rainfall decreases . Stream flows through the sea area and coastal area, is generally the same latitudes as other areas in high - temperature humid air, abundant rainfall, in favor of the agricultural production and the main causes of the Stream flows through the sea area and coastal area, is generally the same latitudes as other areas in high - temperature humid air, abundant rainfall, in favor of the agricultural production and the main causes of the .
ocean currents: the sea is affected by long - term stability of the wind blowing formed; in addition, also in collaboration with the local density of seawater, sea surface height, the Coriolis force and the contour of the land,islands of anddistribution ocean currents: the sea is affected by long - term stability of the wind blowing formed; in addition, also in collaboration with the local density of seawater, sea surface height, the Coriolis force and the contour of the land,islands of anddistribution . oceans currents distribution and the direction of flow, though very complicated, but still has some principles of oceans currents distribution and the direction of flow, though very complicated, but still has some principles of .
1. at the equator to latitude of 40 or 60 is formed between a low - latitude circulation, from flowing in a clockwise direction in the northern hemisphere, southern hemisphere into an anti - clockwise in the direction of circulation of each West Stream, east belongs to cold West Stream, east belongs to cold .
2. at a latitude of 40 or 60 to the north formed a general circulations its circulation direction is the counterclockwise direction, the time scale of the mountains to the west, the east is the Gulf Stream its circulation direction is the counterclockwise direction, the time scale of the mountains to the west, the east is the Gulf Stream .
3. in the north of the equator in the northern Indian Ocean, located due south of the Tropic of Cancer and belongs to the monsoon currents blown winter northeast monsoon,surface water westward to the ocean current in the reverse rotating clockwise in the direction of flow; the summer southwest monsoon is blowing, the sea surface was eastward, clockwise currents flow in the direction of winter northeast monsoon,surface water westward to the ocean current in the reverse rotating clockwise in the direction of flow; the summer southwest monsoon is blowing, the sea surface was eastward, clockwise currents flow in the direction of .
4. West - flowing ocean currents, with the exception of the southern hemisphere and the west wind drift, as well as the warm Gulf Stream properties by the above analysis we can see, the cold air (cold air) is one form of the flow, while the cold snap will then belong (seawater) ocean currents flowing properties by the above analysis we can see, the cold air (cold air) is one form of the flow, while the cold snap will then belong (seawater) ocean currents flowing .
therefore, let us say that the cold wave and upwellings are two completely different concepts, is not to be confused with the therefore, let us say that the cold wave and upwellings are two completely different concepts, is not to be confused with the . 7 7.
