气候变化领域集成服务门户(CCPortal): Comparisons between the distributions of dust and combustion aerosols in MERRA-2, FLEXPART, and CALIPSO and implications for deposition freezing over wintertime Siberia

CCPortal

DOI	10.5194/acp-22-12269-2022
	Comparisons between the distributions of dust and combustion aerosols in MERRA-2, FLEXPART, and CALIPSO and implications for deposition freezing over wintertime Siberia
	Zamora, Lauren M.; Kahn, Ralph A.; Evangeliou, Nikolaos; Zwaaftink, Christine D. Groot; Huebert, Klaus B.
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	12269
结束页码	12285
卷号	22 期号:18 页码:17
英文摘要	Aerosol distributions have a potentially large influence on climate-relevant cloud properties but can be difficult to observe over the Arctic given pervasive cloudiness, long polar nights, data paucity over remote regions, and periodic diamond dust events that satellites can misclassify as aerosol. We compared Arctic 2008-2015 mineral dust and combustion aerosol distributions from the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) satellite, the Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) reanalysis products, and the FLEXible PARTicle (FLEXPART) dispersion model. Based on coincident, seasonal Atmospheric Infrared Sounder (AIRS) Arctic satellite meteorological data, diamond dust may occur up to 60 % of the time in winter, but it hardly ever occurs in summer. In its absence, MERRA-2 and FLEXPART each predict the vertical and horizontal distribution of large-scale patterns in combustion aerosols with relatively high confidence (Kendall tau rank correlation > 0.6), although a sizable amount of variability is still unaccounted for. They do the same for dust, except in conditions conducive to diamond dust formation where CALIPSO is likely misclassifying diamond dust as mineral dust and near the surface (< similar to 2km) where FLEXPART may be overpredicting local dust emissions. Comparisons to ground data suggest that MERRA-2 Arctic dust concentrations can be improved by the addition of local dust sources. All three products predicted that wintertime dust and combustion aerosols occur most frequently over the same Siberian regions where diamond dust is most common in the winter. This suggests that dust aerosol impacts on ice phase processes may be particularly high over Siberia, although further wintertime model validation with non-CALIPSO observations is needed. This assessment paves the way for applying the model-based aerosol simulations to a range of regional-scale Arctic aerosol-cloud interaction studies with greater confidence.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000855440700001
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/273224
作者单位	University System of Maryland; University of Maryland College Park; National Aeronautics & Space Administration (NASA); NASA Goddard Space Flight Center; Norwegian Institute for Air Research
推荐引用方式 GB/T 7714	Zamora, Lauren M.,Kahn, Ralph A.,Evangeliou, Nikolaos,et al. Comparisons between the distributions of dust and combustion aerosols in MERRA-2, FLEXPART, and CALIPSO and implications for deposition freezing over wintertime Siberia[J],2022,22(18):17.
APA	Zamora, Lauren M.,Kahn, Ralph A.,Evangeliou, Nikolaos,Zwaaftink, Christine D. Groot,&Huebert, Klaus B..(2022).Comparisons between the distributions of dust and combustion aerosols in MERRA-2, FLEXPART, and CALIPSO and implications for deposition freezing over wintertime Siberia.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(18),17.
MLA	Zamora, Lauren M.,et al."Comparisons between the distributions of dust and combustion aerosols in MERRA-2, FLEXPART, and CALIPSO and implications for deposition freezing over wintertime Siberia".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.18(2022):17.