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首页> 外文期刊>Acta Meteorologica Sinica >VARIABILITY IN OCCURRENCE OF CHINA'S SPRING SAND/DUST STORM AND ITS RELATIONSHIP WITH ATMOSPHERIC GENERAL CIRCULATION
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VARIABILITY IN OCCURRENCE OF CHINA'S SPRING SAND/DUST STORM AND ITS RELATIONSHIP WITH ATMOSPHERIC GENERAL CIRCULATION

机译：中国春季沙尘暴发生的变化及其与大气环流的关系

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摘要

Spatial distribution and climate variability of China's spring sand/dust storms, and their association with the atmospheric circulation patterns at 500 hPa in the present spring and previous winter were researched in this study. The result shows that in China more than 50 percent of sand/dust storms are observed in spring, especially in Northwest China, where sand/dust storms occur frequently. The occurrence of China's spring sand/dust storms has a general decrease trend in the past 50 years, but it has tended to increase again since 1997. There are significant differences in the general circulations between the most frequent and the least frequent sand/dust storm springs. During the spring and previous winter of the most frequent sand/dust storm springs, at 500 hPa, positive anomalies were found over the Mt. Ural, while negative anomalies were over Siberia and Mongolia. During the least frequent sand/dust storm springs, however, there are negative anomalies over the Mt. Ural and positive anomalies over Europe, Siberia and Mongolia.
机译：本研究研究了中国春季沙尘暴的空间分布和气候变异性，以及与春季和冬季的500 hPa大气环流模式的关系。结果表明，在春季，中国观测到超过50％的沙尘暴，特别是在西北地区，那里经常发生沙尘暴。在过去的50年中，中国春季沙尘暴的发生总体呈下降趋势，但自1997年以来又呈上升趋势。在最频繁和最不频繁的沙尘暴之间，总体环流存在显着差异。泉。在最频繁出现的沙尘暴春季和春季，在500 hPa期间，发现了Mt山脉的正异常。乌拉尔，而西伯利亚和蒙古为负异常。然而，在沙尘暴频率最不频繁的春季，山上存在负异常。欧洲，西伯利亚和蒙古的乌拉尔和正异常。

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