干旱区生态环境知识资源中心(Arid): Improved representation of the global dust cycle using observational constraints on dust properties and abundance

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DOI	10.5194/acp-21-8127-2021
	Improved representation of the global dust cycle using observational constraints on dust properties and abundance
	Kok, Jasper F.; Adebiyi, Adeyemi A.; Albani, Samuel; Balkanski, Yves; Checa-Garcia, Ramiro; Chin, Mian; Colarco, Peter R.; Hamilton, Douglas S.; Huang, Yue; Ito, Akinori; Klose, Martina; Leung, Danny M.; Li, Longlei; Mahowald, Natalie M.; Miller, Ron L.; Obiso, Vincenzo; Perez Garcia-Pando, Carlos; Rocha-Lima, Adriana; Wan, Jessica S.; Whicker, Chloe A.
通讯作者	Kok, JF (corresponding author), Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA.
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN	1680-7316
EISSN	1680-7324
出版年	2021
卷号	21 期号:10 页码:8127-8167
英文摘要	Even though desert dust is the most abundant aerosol by mass in Earth's atmosphere, atmospheric models struggle to accurately represent its spatial and temporal distribution. These model errors are partially caused by fundamental difficulties in simulating dust emission in coarse-resolution models and in accurately representing dust microphysical properties. Here we mitigate these problems by developing a new methodology that yields an improved representation of the global dust cycle. We present an analytical framework that uses inverse modeling to integrate an ensemble of global model simulations with observational constraints on the dust size distribution, extinction efficiency, and regional dust aerosol optical depth. We then compare the inverse model results against independent measurements of dust surface concentration and deposition flux and find that errors are reduced by approximately a factor of 2 relative to current model simulations of the Northern Hemisphere dust cycle. The inverse model results show smaller improvements in the less dusty Southern Hemisphere, most likely because both the model simulations and the observational constraints used in the inverse model are less accurate. On a global basis, we find that the emission flux of dust with a geometric diameter up to 20 mu m (PM20) is approximately 5000 Tg yr(-1), which is greater than most models account for. This larger PM20 dust flux is needed to match observational constraints showing a large atmospheric loading of coarse dust. We obtain gridded datasets of dust emission, vertically integrated loading, dust aerosol optical depth, (surface) concentration, and wet and dry deposition fluxes that are resolved by season and particle size. As our results indicate that this dataset is more accurate than current model simulations and the MERRA-2 dust reanalysis product, it can be used to improve quantifications of dust impacts on the Earth system.
类型	Article
语种	英语
开放获取类型	gold, Green Published, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000657177200002
WOS关键词	ATMOSPHERIC IRON DEPOSITION ; 1 MODEL DESCRIPTION ; MINERAL DUST ; RADIATIVE PROPERTIES ; NORTHEAST ATLANTIC ; SIZE DISTRIBUTION ; PARTICLE FLUXES ; AEROSOL ; EMISSIONS ; VARIABILITY
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构	University of California, Los Angeles
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349625
作者单位	[Kok, Jasper F.; Adebiyi, Adeyemi A.; Huang, Yue; Leung, Danny M.; Whicker, Chloe A.] Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA; [Albani, Samuel] Univ Milano Bicocca, Dept Environm & Earth Sci, Milan, Italy; [Albani, Samuel; Balkanski, Yves; Checa-Garcia, Ramiro] CEA CNRS UVSQ UPSaclay, Lab Sci Climat & Environm, Gif Sur Yvette, France; [Chin, Mian; Colarco, Peter R.] NASA, Goddard Space Flight Ctr, Atmospher Chem & Dynam Lab, Greenbelt, MD 20771 USA; [Hamilton, Douglas S.; Li, Longlei; Mahowald, Natalie M.; Wan, Jessica S.] Cornell Univ, Dept Earth & Atmospher Sci, Ithaca, NY 14850 USA; [Ito, Akinori] JAMSTEC, Yokohama Inst Earth Sci, Yokohama, Kanagawa 2360001, Japan; [Klose, Martina; Obiso, Vincenzo; Perez Garcia-Pando, Carlos] Barcelona Supercomp Ctr BSC, Barcelona 08034, Spain; [Miller, Ron L.; Obiso, Vincenzo] NASA, Goddard Inst Space Studies, New York, NY 10025 USA; [Perez Garcia-Pando, Carlos] ICREA, Catalan Inst Res & Adv Studies, Barcelona 08010, Spain; [Rocha...
推荐引用方式 GB/T 7714	Kok, Jasper F.,Adebiyi, Adeyemi A.,Albani, Samuel,et al. Improved representation of the global dust cycle using observational constraints on dust properties and abundance[J]. University of California, Los Angeles,2021,21(10):8127-8167.
APA	Kok, Jasper F..,Adebiyi, Adeyemi A..,Albani, Samuel.,Balkanski, Yves.,Checa-Garcia, Ramiro.,...&Whicker, Chloe A..(2021).Improved representation of the global dust cycle using observational constraints on dust properties and abundance.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(10),8127-8167.
MLA	Kok, Jasper F.,et al."Improved representation of the global dust cycle using observational constraints on dust properties and abundance".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.10(2021):8127-8167.