气候变化领域集成服务门户(CCPortal): Impact of Mineral Dust on Summertime Precipitation Over the Taiwan Region

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DOI	10.1029/2020JD033120
	Impact of Mineral Dust on Summertime Precipitation Over the Taiwan Region
	Zhang Y.; Yu F.; Luo G.; Chen J.-P.; Chou C.C.K.
发表日期	2020
ISSN	2169897X
卷号	125 期号:19
英文摘要	Dust particles are effective ice nuclei and are known to affect precipitation. Here, the possible impacts of mineral dust on summertime cloud and precipitation over the Taiwan region are investigated through analysis of 25 years (1989–2013) of multiple observational and modeling data sets. Due to the unique mechanism, typhoon precipitations are excluded from this study. Statistical methods (partial correlation and stratification) are used to untangle the influences of dust from the covarying meteorological conditions (water vapor, horizontal wind, sea surface temperature, and moisture flux). The results suggest a statistically significant positive correlation between nontyphoon precipitation and the number concentration of dust particles larger than 0.5 μm (Nd) in July and August in the regions with heavy precipitation. From clean (Nd = ~0.008 cm−3) to dusty days (Nd = ~0.2 cm−3), averaged ice (liquid) water paths and precipitation increase by ~25% (~20%) and ~70% over the orographic region, and vertically, ~30% more cloud ice content is generated at ~350 hPa (T = ~ −20°C), enhancing the development of the mixed-phase cloud and precipitation. The results also indicate the critical role of the atmospheric water vapor in the responses of precipitation to Nd, with precipitation increasing more significantly with Nd in higher water vapor circumstances. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	aerosol-precipitation interaction; mineral dust impacts; summer heavy precipitation
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185728
作者单位	Atmospheric Sciences Research Center, State University of New York at Albany, Albany, NY, United States; Department of Atmospheric Sciences, National Taiwan University, Taipei, Taiwan; Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan
推荐引用方式 GB/T 7714	Zhang Y.,Yu F.,Luo G.,et al. Impact of Mineral Dust on Summertime Precipitation Over the Taiwan Region[J],2020,125(19).
APA	Zhang Y.,Yu F.,Luo G.,Chen J.-P.,&Chou C.C.K..(2020).Impact of Mineral Dust on Summertime Precipitation Over the Taiwan Region.Journal of Geophysical Research: Atmospheres,125(19).
MLA	Zhang Y.,et al."Impact of Mineral Dust on Summertime Precipitation Over the Taiwan Region".Journal of Geophysical Research: Atmospheres 125.19(2020).