Why is it so hot this year?How long does it take to get hot?Look at the official answer

hot

It is a hot word for a while

As the temperature rins to 40 ℃

Hunan has issued a high -temperature red warning for five consecutive days

Why is it so hot this year?

How long does it take to get hot?

What is the meteorological drought?

How should I deal with it?

Listen to meteorological experts together

Expert Introduction: Xie Yijun, Chief Expert of Climate Forecast of Hunan Province Climate Center, Liu Hongwu, Chief Forecast, Hunan Meteorological Observatory

01 What is the situation in high temperature and dry weather in the near future?

Since July 8th, Hunan has continued to be sunny, hot, high temperature and rainy weather. Little rainfall, high temperature and high temperature days were ranked second in the same period since the continuous meteorological records in 1961, second only to 2013, which is rare in history. Essence

Since August, the drought in the province has developed rapidly. According to the monitoring of the Provincial Climate Center on August 14, 70 counties and cities in the province have reached the level or above, which affects 58.9%of the province's area. Anhua, Taojiang, Linxiang, Lianyuan, Tong, Baojing, Shao Dong, Cold Water Beach, Changning, Puyang, Shaoyang County, Guiyang, Huarong, Yueyang Building District, Junshan District, Yunxi District, Yueyang County There are heavy droughts, Cili and Xin Shao are special droughts, and the scope of heavy drought accounts for 5.43%of the province.

How many high -temperature warnings did the province issue?

At present, the Provincial Meteorological Observatory has issued five high -temperature red warnings from this Monday.

According to actual monitoring, from 07:00 on the 18th to 07th, the province is mainly cloudy weather in sunny days, and decentralized showers or thunderstorms occur in the local area; the highest temperature is 38-40 ° C, and the highest is Anhua and Taoyuan 41.4 ° C; The lowest temperature is 26 to 28 ° C in Xiangxi and South Hunan, and 28-30 ° C in other areas.

The Hunan Meteorological Observatory predicts that in the next three days, our province will be controlled by the deputy high, and most areas will continue to be sunny and hot and high temperature. The highest temperature is above 41 ° C. Xiangxi and South Hunan are affected by Dongfeng disturbances.

03 Why is it so hot this year?

The direct reason is that the high -temperature perpetrator "subtropical high pressure" is extremely powerful this year, and even strong enough to climb the towering Qinghai -Tibet Plateau and Luoji Mountains. It rarely opens throughout the northern hemisphere. Therefore, this year's entire northern hemisphere is frequent at high temperature. The indirect reason is the result of the multi -factors such as the atmosphere and the ocean and the sea ice.

Of course, it is also closely related to human activities. The sixth evaluation report of the Special Committee of the United Nations Intergovernmental Climate Change (IPCC) states that global warming can almost be attributed to greenhouse gas emissions caused by human activities.

The heat this summer is extremely rare heat. It is not local and regional as in previous years, but it swept the world. This is an alarm bell for humans.

First, global warming has enhanced the basic temperature of the earth and makes extreme heat wave more likely to occur.

Second, the global acceleration warming and polarity double warming broke the original balance of the atmospheric circulation system. The stability of the climate has become weaker and the oscillation is intensified.

Third, in this unstable climate background, once some abnormal factors are superimposed (such as the Lamina incident that is still continuing), it is easier to trigger various extreme events.

04 Is the high -temperature heat wave weather more frequent in the future?

The sixth evaluation report of the Special Committee of the United Nations Intergovernmental Climate Change (IPCC) pointed out that the climate warming caused by human activities has been unprecedented in the past 2000. At present, the concentration of carbon dioxide in the atmosphere is at least 2 million years; the area of ​​the Arctic sea ice is the lowest value in the past 1,000 years; of.

In the context of global warming, this year's high temperature and heat will no longer be "extreme" or may become the norm.

05 How many levels do I have in the meteorological drought warning?

Meteorological drought warning is divided into three levels, which are represented by yellow, orange, and red, respectively.

(1) Drought yellow warning

More than 20 counties and cities have reached the level of meteorological drought and drought; or the affected area of ​​crops in the province will be above 5%. It is expected that the scope of drought or crop drought is expected to continue to develop.

(2) Drought and orange warning

More than 30 counties and cities have reached the level of meteorological drought and drought, and there are 10 cities above the county levels to reach meteorological drought and drought grade; or the area of ​​crops in the province will be more than 10%. It is expected that the scope of drought or crops in drought or crops will continue to develop.

(3) Drought red warning

More than 30 counties and cities have reached the level of meteorological drought and drought; or the affected area of ​​crops in the province will be more than 20%. It is expected that the drought or crops are expected to continue to develop.

06 What kind of drought is divided into?

Different disciplines and fields have different definitions of drought, such as meteorological drought focusing on changes in meteorological elements such as precipitation and evaporation; hydrological drought focuses on changes in runoff; agricultural drought focuses on the difference between crop water supply and water demand; urban drought focuses on the focus of urban drought than more than The difference between water supply and water demand.

Part of the rice fields in Longtanhe Town, Cili Longtanhe Town Photo by Zhu Yongjun

Is it possible for meteorological drought to further develop?

According to the forecast of the Hunan Meteorological Observatory, the high temperature and heat damage in the province will continue to increase quickly in the next ten days, and the drought warning may be upgraded to an orange warning.

The Hunan Provincial Climate Center estimates that by August 21, 98 counties and cities in the province will reach the dry meteorological drought above the drought. 43 counties and cities in other places are heavy and dry and above, of which Cili, Xin Shao, Anhua, Guiyang, Baojing, Linxiang, and Jishou have 7 counties and cities. Vegetable Base in Longtan River Town, Cili, withered in Zhu Yongjun due to drought cucumber vine

08 How to deal with high temperature and drought?

Pay attention to meteorological forecast early warning, prevent high temperature and heat damage on the adverse effects of power supply, transportation, production safety, outdoor activities or operations, agricultural production, forest fire prevention and other aspects, and do a good job of resistance to drought resistance; strengthen water resource dispatching and drought resistance work, and drought resistance. Strengthen water storage and water, pay attention to saving water.

The public should pay attention to the heatstroke prevention and cooling work. The high temperature duration is long and strong. For the elderly and outdoor workers, they need to pay special attention to preventing heat stroke and thermal radiation.

The weather is too hot, now I just want to be cool

However, while cooling

Also pay attention to power saving ~

Source 丨 Hunan Meteorological Hunan Daily

Edit 丨 Luo Hongyan's duty head teacher 丨 鄢 鄢 鄢 丨 丨 丨 编 丨 丨 Candidate Zhangjiajie

This platform is owned by Zhangjiajie Daily. If any unit, personal use, reprinting, or dissemination of the media copyright content of the Zhangjiajie Daily shall obtain written authorization in advance. Except for the statutory and reasonable use scope, it is not allowed to reprint or disseminate works with copyrights without permission (the form of the work is not limited to the text).

- END -