气候变化领域集成服务门户(CCPortal): Contrasting local and long-range-transported warm ice-nucleating particles during an atmospheric river in coastal California; USA

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DOI	10.5194/acp-19-4193-2019
	Contrasting local and long-range-transported warm ice-nucleating particles during an atmospheric river in coastal California; USA
	Martin A.C.; Cornwell G.; Beall C.M.; Cannon F.; Reilly S.; Schaap B.; Lucero D.; Creamean J.; Martin Ralph F.; Mix H.T.; Prather K.
发表日期	2019
ISSN	16807316
起始页码	4193
结束页码	4210
卷号	19 期号:7
英文摘要	Ice-nucleating particles (INPs) have been found to influence the amount, phase and efficiency of precipitation from winter storms, including atmospheric rivers. Warm INPs, those that initiate freezing at temperatures warmer than ĝ'10 ĝC, are thought to be particularly impactful because they can create primary ice in mixed-phase clouds, enhancing precipitation efficiency. The dominant sources of warm INPs during atmospheric rivers, the role of meteorology in modulating transport and injection of warm INPs into atmospheric river clouds, and the impact of warm INPs on mixed-phase cloud properties are not well-understood. In this case study, time-resolved precipitation samples were collected during an atmospheric river in northern California, USA, during winter 2016. Precipitation samples were collected at two sites, one coastal and one inland, which are separated by about 35 km. The sites are sufficiently close that air mass sources during this storm were almost identical, but the inland site was exposed to terrestrial sources of warm INPs while the coastal site was not. Warm INPs were more numerous in precipitation at the inland site by an order of magnitude. Using FLEXPART (FLEXible PARTicle dispersion model) dispersion modeling and radar-derived cloud vertical structure, we detected influence from terrestrial INP sources at the inland site but did not find clear evidence of marine warm INPs at either site. We episodically detected warm INPs from long-range-transported sources at both sites. By extending the FLEXPART modeling using a meteorological reanalysis, we demonstrate that long-range-transported warm INPs were observed only when the upper tropospheric jet provided transport to cloud tops. Using radar-derived hydrometeor classifications, we demonstrate that hydrometeors over the terrestrially influenced inland site were more likely to be in the ice phase for cloud temperatures between 0 and ĝ'10 ĝC. We thus conclude that terrestrial and long-range-transported aerosol were important sources of warm INPs during this atmospheric river. Meteorological details such as transport mechanism and cloud structure were important in determining (i) warm INP source and injection temperature and (ii) ultimately the impact of warm INPs on mixed-phase cloud properties. © Author(s) 2019.
语种	英语
scopus关键词	atmospheric moisture; atmospheric transport; cloud microphysics; ice; long range transport; particulate matter; point source; precipitation (climatology); California; United States
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144524
作者单位	Center for Western Weather and Water Extremes, Scripps Institution of Oceanography, University of California San Diego, San Diego, CA, United States; Department of Chemistry and Biochemistry, University of California San Diego, San Diego, CA, United States; Scripps Institution of Oceanography, University of California San Diego, San Diego, CA, United States; Department of Environmental Studies and Sciences, Santa Clara University, Santa Clara, CA, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Physical Sciences Division, National Oceanic and Atmospheric Administration, Boulder, CO, United States; Department of Geography, Portland State University, Portland, OR, United States; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States
推荐引用方式 GB/T 7714	Martin A.C.,Cornwell G.,Beall C.M.,et al. Contrasting local and long-range-transported warm ice-nucleating particles during an atmospheric river in coastal California; USA[J],2019,19(7).
APA	Martin A.C..,Cornwell G..,Beall C.M..,Cannon F..,Reilly S..,...&Prather K..(2019).Contrasting local and long-range-transported warm ice-nucleating particles during an atmospheric river in coastal California; USA.Atmospheric Chemistry and Physics,19(7).
MLA	Martin A.C.,et al."Contrasting local and long-range-transported warm ice-nucleating particles during an atmospheric river in coastal California; USA".Atmospheric Chemistry and Physics 19.7(2019).