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DOI | 10.1002/2017GL076353 |
Surface Winds and Dust Biases in Climate Models | |
Evan, A. T. | |
2018-01-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:2页码:1079-1085 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | An analysis of North African dust from models participating in the Fifth Climate Models Intercomparison Project (CMIP5) suggested that, when forced by observed sea surface temperatures, these models were unable to reproduce any aspects of the observed year-to-year variability in dust from North Africa. Consequently, there would be little reason to have confidence in the models' projections of changes in dust over the 21st century. However, no subsequent study has elucidated the root causes of the disagreement between CMIP5 and observed dust. Here I develop an idealized model of dust emission and then use this model to show that, over North Africa, such biases in CMIP5 models are due to errors in the surface wind fields and not due to the representation of dust emission processes. These results also suggest that because the surface wind field over North Africa is highly spatially autocorrelated, intermodel differences in the spatial structure of dust emission have little effect on the relative change in year-to-year dust emission over the continent. I use these results to show that similar biases in North African dust from the NASA Modern Era Retrospective analysis for Research and Applications (MERRA) version 2 surface wind field biases but that these wind biases were not present in the first version of MERRA. |
英文关键词 | dust climate models |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425514300066 |
WOS关键词 | AFRICAN DUST ; GOCART MODEL ; ATLANTIC ; TRANSPORT ; 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/27959 |
专题 | 气候变化 |
作者单位 | Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA |
推荐引用方式 GB/T 7714 | Evan, A. T.. Surface Winds and Dust Biases in Climate Models[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(2):1079-1085. |
APA | Evan, A. T..(2018).Surface Winds and Dust Biases in Climate Models.GEOPHYSICAL RESEARCH LETTERS,45(2),1079-1085. |
MLA | Evan, A. T.."Surface Winds and Dust Biases in Climate Models".GEOPHYSICAL RESEARCH LETTERS 45.2(2018):1079-1085. |
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