Earlier vegetation green-up has reduced spring dust storms

Bihang Fan, Li Guo, Ning Li, Jin Chen, Henry Lin, Xiaoyang Zhang, Miaogen Shen, Yuhan Rao, Cong Wang, Lei Ma

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

The observed decline of spring dust storms in Northeast Asia since the 1950s has been attributed to surface wind stilling. However, spring vegetation growth could also restrain dust storms through accumulating aboveground biomass and increasing surface roughness. To investigate the impacts of vegetation spring growth on dust storms, we examine the relationships between recorded spring dust storm outbreaks and satellite-derived vegetation green-up date in Inner Mongolia, Northern China from 1982 to 2008. We find a significant dampening effect of advanced vegetation growth on spring dust storms (r = 0.49, p = 0.01), with a one-day earlier green-up date corresponding to a decrease in annual spring dust storm outbreaks by 3%. Moreover, the higher correlation (r = 0.55, p < 0.01) between green-up date and dust storm outbreak ratio (the ratio of dust storm outbreaks to times of strong wind events) indicates that such effect is independent of changes in surface wind. Spatially, a negative correlation is detected between areas with advanced green-up dates and regional annual spring dust storms (r = -0.49, p = 0.01). This new insight is valuable for understanding dust storms dynamics under the changing climate. Our findings suggest that dust storms in Inner Mongolia will be further mitigated by the projected earlier vegetation green-up in the warming world.

Original languageEnglish (US)
Article number6749
JournalScientific reports
Volume4
DOIs
StatePublished - Oct 24 2014

All Science Journal Classification (ASJC) codes

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    Fan, B., Guo, L., Li, N., Chen, J., Lin, H., Zhang, X., Shen, M., Rao, Y., Wang, C., & Ma, L. (2014). Earlier vegetation green-up has reduced spring dust storms. Scientific reports, 4, [6749]. https://doi.org/10.1038/srep06749