近3年我国沙尘天气较频繁发生的原因分析

利用我国沙尘日数、气温、降水等资料对我国近3年沙尘天气发生的特点及原因进行分析,指出干暖的气候背景、频繁的冷空气和气旋活动及荒漠化发展是造成近3年北方地区春季沙尘天气较频繁的原因,展望未来几年沙尘天气的可能趋势.

Analyses of the Causes for Frequent Dust Weather Occurred in China During the Last Three Years

The properties of the dust weather occurred in the Northern China in the last three years were analyzed. It was concluded that the warm and arid climate, the frequencies of cold air and cyclone activities,and the desertification were the three main reasons why dust weather occurred frequently in the northern China in recent springs. The possible trend of the dust weather occurrence in the next few years was also discussed.