气候变化领域集成服务门户(CCPortal): Assessment of NAAPS-RA performance in Maritime Southeast Asia during CAMP(2)Ex

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DOI	10.5194/acp-22-12961-2022
	Assessment of NAAPS-RA performance in Maritime Southeast Asia during CAMP(2)Ex
	Edwards, Eva-Lou; Reid, Jeffrey S.; Xian, Peng; Burton, Sharon P.; Cook, Anthony L.; Crosbie, Ewan C.; Fenn, Marta A.; Ferrare, Richard A.; Freeman, Sean W.; Hair, John W.; Harper, David B.; Hostetler, Chris A.; Robinson, Claire E.; Scarino, Amy Jo; Shook, Michael A.; Sokolowsky, G. Alexander; van den Heever, Susan C.; Winstead, Edward L.; Woods, Sarah; Ziemba, Luke D.; Sorooshian, Armin
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	12961
结束页码	12983
卷号	22 期号:19 页码:23
英文摘要	Monitoring and modeling aerosol particle life cycle in Southeast Asia (SEA) is challenged by high cloud cover, complex meteorology, and the wide range of aerosol species, sources, and transformations found throughout the region. Satellite observations are limited, and there are few in situ observations of aerosol extinction profiles, aerosol properties, and environmental conditions. Therefore, accurate aerosol model outputs are crucial for the region. This work evaluates the Navy Aerosol Analysis and Prediction System Reanalysis (NAAPS-RA) aerosol optical thickness (AOT) and light extinction products using airborne aerosol and meteorological measurements from the Cloud, Aerosol, and Monsoon Processes Philippines Experiment (CAMP(2)Ex) conducted in 2019 during the SEA southwest monsoon biomass burning season. Modeled AOTs and extinction coefficients are compared to those retrieved with a high spectral resolution lidar (HSRL-2). Agreement between simulated and retrieved AOT (R-2 = 0.78, relative bias = -5 %, normalized root mean square error (NRMSE) = 48 %) and aerosol extinction coefficients (R-2 = 0.80, 0.81, and 0.42; relative bias = 3 %, -6 %, and -7 %; NRMSE = 47 %, 53 %, and 118 % for altitudes between 40-500, 500-1500, and >1500 m, respectively) is quite good considering the challenging environment and few opportunities for assimilations of AOT from satellites during the campaign. Modeled relative humidities (RHs) are negatively biased at all altitudes (absolute bias = -5 %, -8 %, and -3 % for altitudes <500 500-1500 and >1500 m, respectively), motivating interest in the role of RH errors in AOT and extinction simulations. Interestingly, NAAPS-RA AOT and extinction agreement with the HSRL-2 does not change significantly (i.e., NRMSE values do not all decrease) when RHs from dropsondes are substituted into the model, yet biases all move in a positive direction. Further exploration suggests changes in modeled extinction are more sensitive to the actual magnitude of both the extinction coefficients and the dropsonde RHs being substituted into the model as opposed to the absolute differences between simulated and measured RHs. Finally, four case studies examine how model errors in RH and the hygroscopic growth parameter, gamma, affect simulations of extinction in the mixed layer (ML). We find NAAPS-RA overestimates the hygroscopicity of (i) smoke particles from biomass burning in the Maritime Continent (MC) and (ii) anthropogenic emissions transported from East Asia. This work mainly provides insight into the relationship between errors in modeled RH and simulations of AOT and extinction in a humid and tropical environment influenced by a myriad of meteorological conditions and particle types. These results can be interpreted and addressed by the modeling community as part of the effort to better understand, quantify, and forecast atmospheric conditions in SEA.
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:000865442600001
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/273634
作者单位	University of Arizona; National Aeronautics & Space Administration (NASA); NASA Langley Research Center; Science Systems and Applications Inc; Colorado State University; University of Arizona
推荐引用方式 GB/T 7714	Edwards, Eva-Lou,Reid, Jeffrey S.,Xian, Peng,et al. Assessment of NAAPS-RA performance in Maritime Southeast Asia during CAMP(2)Ex[J],2022,22(19):23.
APA	Edwards, Eva-Lou.,Reid, Jeffrey S..,Xian, Peng.,Burton, Sharon P..,Cook, Anthony L..,...&Sorooshian, Armin.(2022).Assessment of NAAPS-RA performance in Maritime Southeast Asia during CAMP(2)Ex.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(19),23.
MLA	Edwards, Eva-Lou,et al."Assessment of NAAPS-RA performance in Maritime Southeast Asia during CAMP(2)Ex".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.19(2022):23.