Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-20-829-2020 |
Dust Constraints from joint Observational-Modelling-experiMental analysis (DustCOMM): comparison with measurements and model simulations | |
Adebiyi, Adeyemi A.1; Kok, Jasper F.1; Wang, Yang1; Ito, Akinori2; Ridley, David A.3; Nabat, Pierre4; Zhao, Chun5 | |
2020-01-23 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2020 |
卷号 | 20期号:2页码:829-863 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Japan; France; Peoples R China |
英文摘要 | Mineral dust is the most abundant aerosol species by mass in the atmosphere, and it impacts global climate, biogeochemistry, and human health. Understanding these varied impacts on the Earth system requires accurate knowledge of dust abundance, size, and optical properties, and how they vary in space and time. However, current global models show substantial biases against measurements of these dust properties. For instance, recent studies suggest that atmospheric dust is substantially coarser and more aspherical than accounted for in models, leading to persistent biases in modelled impacts of dust on the Earth system. Here, we facilitate more accurate constraints on dust impacts by developing a new dataset: Dust Constraints from joint Observational-Modelling-experiMental analysis (DustCOMM). This dataset combines an ensemble of global model simulations with observational and experimental constraints on dust size distribution and shape to obtain more accurate constraints on three-dimensional (3-D) atmospheric dust properties than is possible from global model simulations alone. Specifically, we present annual and seasonal climatologies of the 3-D dust size distribution, 3-D dust mass extinction efficiency at 550?nm, and two-dimensional (2-D) atmospheric dust loading. Comparisons with independent measurements taken over several locations, heights, and seasons show that DustCOMM estimates consistently outperform conventional global model simulations. In particular, DustCOMM achieves a substantial reduction in the bias relative to measured dust size distributions in the 0.520?mu m diameter range. Furthermore, DustCOMM reproduces measurements of dust mass extinction efficiency to almost within the experimental uncertainties, whereas global models generally overestimate the mass extinction efficiency. DustCOMM thus provides more accurate constraints on 3-D dust properties, and as such can be used to improve global models or serve as an alternative to global model simulations in constraining dust impacts on the Earth system. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000509386500003 |
WOS关键词 | SAHARAN-MINERAL-DUST ; PARTICLE-SIZE DISTRIBUTION ; AEROSOL OPTICAL-PROPERTIES ; COMPLEX REFRACTIVE-INDEX ; ATMOSPHERIC TRANSPORT ; RADIATIVE PROPERTIES ; HYGROSCOPIC GROWTH ; LIGHT-SCATTERING ; MIXING STATE ; NORTH-AFRICA |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/278586 |
专题 | 地球科学 |
作者单位 | 1.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA; 2.JAMSTEC, Yokohama Inst Earth Sci, Yokohama, Kanagawa 2360001, Japan; 3.Calif Air Resources Board, Monitoring & Lab Div, Sacramento, CA USA; 4.Univ Toulouse, Ctr Natl Rech Meteorol, Meteo France, CNRS, Toulouse, France; 5.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | Adebiyi, Adeyemi A.,Kok, Jasper F.,Wang, Yang,et al. Dust Constraints from joint Observational-Modelling-experiMental analysis (DustCOMM): comparison with measurements and model simulations[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(2):829-863. |
APA | Adebiyi, Adeyemi A..,Kok, Jasper F..,Wang, Yang.,Ito, Akinori.,Ridley, David A..,...&Zhao, Chun.(2020).Dust Constraints from joint Observational-Modelling-experiMental analysis (DustCOMM): comparison with measurements and model simulations.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(2),829-863. |
MLA | Adebiyi, Adeyemi A.,et al."Dust Constraints from joint Observational-Modelling-experiMental analysis (DustCOMM): comparison with measurements and model simulations".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.2(2020):829-863. |
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