It is raining in cities all over the country these days.

Zhang Mingying, a senior meteorological engineer at Beijing Meteorological Observatory, analyzed that the abnormal climate change this winter was mainly affected by solar radiation, atmospheric circulation, geographical features and human activities. The trend of global warming has not changed. The reporter learned that this winter, the precipitation in Beijing was obviously higher. The precipitation of observatory14.7mm is 40% more than normal (10.4mm). The total snowfall in winter is 14 days, which is obviously more than normal (9.6 days). Meteorologists said that more snowfall played a role in keeping winter wheat and pasture warm and increasing water; Suppress dust, purify air, reduce pollution, and at the same time suppress viruses and germs in the air, which is beneficial to people's health. But at the same time, staged low temperature has a great influence on urban heating, and too much snowfall has also tested urban traffic conditions. In response to this phenomenon, Zhai Panmao, deputy director of the Department of Forecasting and Disaster Reduction of China Meteorological Bureau, said that although the temperature this winter is slightly lower than normal, the trend of global warming has not changed. There will be less dusty weather this spring. According to the forecast of China Meteorological Bureau on the climate trend of sand-dust weather in spring 2005, the cold air activity affecting China in spring 2005 is weaker than normal, and the total trend of sand-dust weather days in northern China is close to normal or less, among which the sand-dust weather days in North China and the eastern part of Northwest China are close to normal or less. In addition, the frequency of sandstorms in northern China is close to or lower than normal, which is equivalent to or slightly less than that in the same period of 2004. Li Weijing, deputy director of the National Climate Center of China Meteorological Bureau, explained: "Because most parts of northern China have not been thawed and there is no strong cold air intrusion recently, there will be less dusty weather in spring 2005 than in previous years." Related news There will be a gale of six tomorrow. According to the latest meteorological data, Beijing will turn from sunny to cloudy today. Affected by cold air, there will be four to five northerly winds during the day, and there will be six winds in some areas. Today, the highest temperature during the day is 4℃, and the lowest temperature at night is MINUS 3℃. Due to the strong wind, the meteorological department reminded people who went out to pay attention to wind and fire prevention. According to Zhai Panmao, Deputy Director of Forecasting and Disaster Reduction Department of China Meteorological Bureau, it is predicted that cold air activities will be more frequent and the temperature will fluctuate greatly in the north of China in the next 10 day. There are three cold air processes affecting China in March: it is expected that there will be three cold air processes affecting China in that month, and the occurrence time and intensity are roughly: early (moderate), late (moderate) and late (moderately weak).