干旱区生态环境知识资源中心(Arid): Contribution of the world's main dust source regions to the global cycle of desert dust

Arid

DOI	10.5194/acp-21-8169-2021
	Contribution of the world's main dust source regions to the global cycle of desert dust
	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; Li, Longlei; Mahowald, Natalie M.; Miller, Ron L.; Obiso, Vincenzo; Perez Garcia-Pando, Carlos; Rocha-Lima, Adriana; Wan, Jessica S.
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:8169-8193
英文摘要	Even though desert dust is the most abundant aerosol by mass in Earth's atmosphere, the relative contributions of the world's major source regions to the global dust cycle remain poorly constrained. This problem hinders accounting for the potentially large impact of regional differences in dust properties on clouds, the Earth's energy balance, and terrestrial and marine biogeochemical cycles. Here, we constrain the contribution of each of the world's main dust source regions to the global dust cycle. We use an analytical framework that integrates an ensemble of global aerosol model simulations with observationally informed constraints on the dust size distribution, extinction efficiency, and regional dust aerosol optical depth (DAOD). We obtain a dataset that constrains the relative contribution of nine major source regions to size-resolved dust emission, atmospheric loading, DAOD, concentration, and deposition flux. We find that the 22-29 Tg (1 standard error range) global loading of dust with a geometric diameter up to 20 mu m is partitioned as follows: North African source regions contribute similar to 50% (11-15 Tg), Asian source regions contribute similar to 40% (8-13 Tg), and North American and Southern Hemisphere regions contribute similar to 10% (1.8-3.2 Tg). These results suggest that current models on average overestimate the contribution of North African sources to atmospheric dust loading at similar to 65 %, while underestimating the contribution of Asian dust at similar to 30 %. Our results further show that each source region's dust loading peaks in local spring and summer, which is partially driven by increased dust lifetime in those seasons. We also quantify the dust deposition flux to the Amazon rainforest to be similar to 10 Tg yr(-1), which is a factor of 2-3 less than inferred from satellite data by previous work that likely overestimated dust deposition by underestimating the dust mass extinction efficiency. The data obtained in this paper can be used to obtain improved constraints on dust impacts on clouds, climate, biogeochemical cycles, and other parts of the Earth system.
类型	Article
语种	英语
开放获取类型	Green Submitted, Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000657177200003
WOS关键词	LAST GLACIAL MAXIMUM ; MINERAL DUST ; SAHARAN DUST ; ICE CORE ; OPTICAL-PROPERTIES ; SIZE DISTRIBUTION ; CLIMATE ; AEROSOL ; VARIABILITY ; TRANSPORT
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/2XILL650/349626
作者单位	[Kok, Jasper F.; Adebiyi, Adeyemi A.; Huang, Yue] 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-Lima, Adriana] UMBC, Phys Dept, Bal...
推荐引用方式 GB/T 7714	Kok, Jasper F.,Adebiyi, Adeyemi A.,Albani, Samuel,et al. Contribution of the world's main dust source regions to the global cycle of desert dust[J]. University of California, Los Angeles,2021,21(10):8169-8193.
APA	Kok, Jasper F..,Adebiyi, Adeyemi A..,Albani, Samuel.,Balkanski, Yves.,Checa-Garcia, Ramiro.,...&Wan, Jessica S..(2021).Contribution of the world's main dust source regions to the global cycle of desert dust.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(10),8169-8193.
MLA	Kok, Jasper F.,et al."Contribution of the world's main dust source regions to the global cycle of desert dust".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.10(2021):8169-8193.