Abstract:

In this study， we used multi-source environmental， meteorological and satellite remote sensing data from 2007 to 2021 to analyze the spatial-temporal characteristic of spring sandstorms and the related meteorological influences of the Taklimakan Desert and Gobi Desert. The results show that： （1） The frequency of spring sandstorms in Taklimakan Desert is much stronger than that in Gobi Desert， but it mostly occurs in the east-central Taklimakan Desert， and it mostly occurs in the western part of Inner Mongolia and the south-central Mongolia in Gobi Desert. （2） The east-west cold front is the main influence system in Taklimakan Desert， and the 500 hPa geopotential height anomaly is generally low in the west and high in the east in mid-high latitude in eastern Asia； The south-north cold front is the main influence system in Gobi Desert， and the 500 hPa geopotential height anomaly over the low latitude to high latitude areas in eastern Asia is “- + -”. （3） Spring sandstorms in Taklimakan Desert has the significantly negative correlation with the local pre winter precipitation and the significantly positive correlation with the ground temperature； Spring sandstorms in Gobi Desert are positively correlated with the local pre winter precipitation and are negatively correlated with the ground temperature， but the correlations are not significant.

Key words: spring sandstorms, circulation background, Taklimakan Desert, Gobi Desert, meteorological influence