沙尘天气监测预警,应对气候变化

Monitoring and Early Warning on Sand and Dust Storm to Tackling Climate Change

沙尘天气是风将地面尘土、沙粒卷入空中,使空气浑浊的一种天气现象的统称,是影响我国北方地区的主要灾害性天气之一,尤其在春季多发。根据国家标准《沙尘暴天气等级》(GB/T20480-2006),沙尘天气分为浮尘、扬沙、沙尘暴、强沙尘暴和特强沙尘暴5类。

Since the 1960s,the sandstorms in northern China have occurred with less frequency and intensity.On the one hand,the circulation of cold air in the Eurasian midhigh latitudes has weakened,resulting in weaker sand dynamics.On the other hand,China has made remarkable progress in desertification control,effectively reducing sandstorm formation at sand sources.Sandstorm days in northern China is expected to decrease,but sand and dust from Mongolia is projected to increase in the future.Therefore,China stil has to undertake daunting tasks in sand control and prevention.It is suggested that the north China could improve the monitoring station network in sand source areas to enhance the capability of sandstorm forecasting and early-warning,consolidate the achievements in desertification control and prevention by promoting clean energy use,and jointly build an international cooperation and governance system for desertification control under the Belt and Road Initiative.