What are the main features of weather and climate in China this year?

The weather in China this year has two main features. One is the big background, and the weather continues to get warmer. Obviously, the average temperature in China reached a record high this year, with an average temperature of 9.3 degrees, reaching 10.6 degrees this year. In this case, the average temperature has exceeded 1.3 degrees, which is a new increase compared with last year, so we think the temperature has reached a new high this year. In this context, some extreme weather also occurs frequently. For example, the snowstorm in Northeast China in March, including the gale in Bohai Sea, is an extreme weather and climate event, including the drought in North China and Northeast China in spring and the drought in South China in autumn, including the continuous high temperature in Guangdong, Fujian and Zhejiang in midsummer. Typhoon Sapa also affected many areas. Even rainy weather will damage our lives, such as mudslides in Yunnan and so on.

These influences are very great, because they happen constantly. The most influential thing in my impression was a relatively big lightning strike in Chongqing in May. Seven pupils were killed by lightning. The other is the frequent occurrence of extreme weather and climate events, which is the main weather feature in 2007. The effect of high temperature and drought is water shortage, which has caused water shortage in many areas, especially in Northeast China, Jiangnan and South China.

Generally speaking, the climate is getting warmer. For some specific weather systems, such as the abnormal change of subtropical high that we often hear, it will also cause high temperature in some areas. In addition, the abnormal oscillation of subtropical high will lead to the north-south oscillation of some rain belts caused by rainfall in Huaihe River basin, which is caused by the whole local circulation characteristics. For example, the change of atmospheric circulation caused by subtropical high last year will affect the climate.