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DOI10.5194/acp-22-16091-2022
An evaluation of biomass burning aerosol mass, extinction, and sizedistribution in GEOS using observations from CAMP(2)Ex
Collow, Allison B. Marquardt; Buchard, Virginie; Colarco, Peter R.; da Silva, Arlindo M.; Govindaraju, Ravi; Nowottnick, Edward P.; Burton, Sharon; Ferrare, Richard; Hostetler, Chris; Ziemba, Luke
发表日期2022
ISSN1680-7316
EISSN1680-7324
起始页码16091
结束页码16109
卷号22期号:24页码:19
英文摘要Biomass burning aerosol impacts aspects of the atmosphere and Earth system through direct and semi-direct effects, as well as influencing air quality. Despite its importance, the representation of biomass burning aerosol is not always accurate in numerical weather prediction and climate models or reanalysis products. Using observations collected as part of the Cloud, Aerosol and Monsoon Processes Philippines Experiment (CAMP2Ex) in August through October of 2019, aerosol concentration and optical properties are evaluated within the Goddard Earth Observing System (GEOS) and its underlying aerosol module, GOCART. In the operational configuration, GEOS assimilates aerosol optical depth observations at 550 nm from AERONET and MODIS to constrain aerosol fields. Particularly for biomass burning aerosol, without the assimilation of aerosol optical depth, aerosol extinction is underestimated compared to observations collected in the Philippines region during the CAMP2Ex campaign. The assimilation process adds excessive amounts of carbon to account for the underestimated extinction, resulting in positive biases in the mass of black and organic carbon, especially within the boundary layer, relative to in situ observations from the Langley Aerosol Research Group Experiment. Counteracting this, GEOS is deficient in sulfate and nitrate aerosol just above the boundary layer. Aerosol extinction within GEOS is a function of the mass of different aerosol species, the ambient relative humidity, the assumed spectral optical properties, and particle size distribution per species. The relationship between dry and ambient extinction in GEOS reveals that hygroscopic growth is too high within the model for biomass burning aerosol. An additional concern lies in the assumed particle size distribution for GEOS, which has a single mode radius that is too small for organic carbon. Variability in the observed particle size distribution for biomass burning aerosol within a single flight also illuminates the fact that a single assumed particle size distribution is not sufficient and that for a proper representation, a more advanced aerosol module within GEOS may be necessary.
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:000902170500001
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/273842
作者单位University System of Maryland; University of Maryland Baltimore County; National Aeronautics & Space Administration (NASA); NASA Goddard Space Flight Center; Science Systems and Applications Inc; National Aeronautics & Space Administration (NASA); NASA Langley Research Center
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Collow, Allison B. Marquardt,Buchard, Virginie,Colarco, Peter R.,et al. An evaluation of biomass burning aerosol mass, extinction, and sizedistribution in GEOS using observations from CAMP(2)Ex[J],2022,22(24):19.
APA Collow, Allison B. Marquardt.,Buchard, Virginie.,Colarco, Peter R..,da Silva, Arlindo M..,Govindaraju, Ravi.,...&Ziemba, Luke.(2022).An evaluation of biomass burning aerosol mass, extinction, and sizedistribution in GEOS using observations from CAMP(2)Ex.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(24),19.
MLA Collow, Allison B. Marquardt,et al."An evaluation of biomass burning aerosol mass, extinction, and sizedistribution in GEOS using observations from CAMP(2)Ex".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.24(2022):19.
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