Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL086592 |
Climate Models and Remote Sensing Retrievals Neglect Substantial Desert Dust Asphericity | |
Huang, Yue1; Kok, Jasper F.1; Kandler, Konrad2; Lindqvist, Hannakaisa3; Nousiainen, Timo3; Sakai, Tetsu4; Adebiyi, Adeyemi1; Jokinen, Olli5 | |
2020-03-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Germany; Finland; Japan |
英文摘要 | Climate models and remote sensing retrievals generally assume that dust aerosols are spherical or spheroidal. However, measurements show that dust aerosols deviate substantially from spherical and spheroidal shapes, as ratios of particle length to width (the aspect ratio) and height to width (height-to-width ratio) deviate substantially from unity. Here, we quantify dust asphericity by compiling dozens of measurements of aspect ratio and height-to-width ratio across the globe. We find that the length is on average 5 times larger than the height and that climate models and remote sensing retrievals underestimate this asphericity by a factor of similar to 3-5. Compiled measurements further suggest that North African dust becomes more aspherical during transport, whereas Asian dust might become less aspherical. We obtain globally-averaged shape distributions, from which we find that accounting for dust asphericity increases gravitational settling lifetime by similar to 20%. This increased lifetime helps explain the underestimation of coarse dust transport by models. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000529097700015 |
WOS关键词 | SAHARAN-MINERAL-DUST ; LONG-RANGE TRANSPORT ; AFRICAN DUST ; INDIVIDUAL PARTICLE ; OPTICAL-PROPERTIES ; SIZE DISTRIBUTION ; SEA-SALT ; SHAPE ; LIDAR ; AEROSOLS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/279784 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90032 USA; 2.Tech Univ Darmstadt, Inst Appl Geosci, Darmstadt, Germany; 3.Finnish Meteorol Inst, Helsinki, Finland; 4.Japan Meteorol Agcy, Meteorol Res Inst, Tsukuba, Ibaraki, Japan; 5.Sole Proprietorship, Espoo, Finland |
推荐引用方式 GB/T 7714 | Huang, Yue,Kok, Jasper F.,Kandler, Konrad,et al. Climate Models and Remote Sensing Retrievals Neglect Substantial Desert Dust Asphericity[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(6). |
APA | Huang, Yue.,Kok, Jasper F..,Kandler, Konrad.,Lindqvist, Hannakaisa.,Nousiainen, Timo.,...&Jokinen, Olli.(2020).Climate Models and Remote Sensing Retrievals Neglect Substantial Desert Dust Asphericity.GEOPHYSICAL RESEARCH LETTERS,47(6). |
MLA | Huang, Yue,et al."Climate Models and Remote Sensing Retrievals Neglect Substantial Desert Dust Asphericity".GEOPHYSICAL RESEARCH LETTERS 47.6(2020). |
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