Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031255 |
Drought Demise Attribution Over CONUS | |
Wu, Jiexia1; Dirmeyer, Paul A.1,2 | |
2020-02-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Compared with drought onset, the quantification and attribution of drought demise are not well studied. Meteorological droughts usually terminate more rapidly than they initiate, making it hard to define a transition period leading to drought demise with monthly data. In this study, methods of quantifying and attributing drought demise are applied to the Modern-Era Retrospective Analysis for Research and Applications version 2 (MERRA-2) using modified Standardized Precipitation Index representing meteorological drought calculated at pentad intervals to resolve subseasonal demise events. Methodologies to attribute three specific causes of drought demise in nine climate regional divisions over conterminous U.S. (CONUS) are developed. The three phenomenological causes are tropical cyclones, atmospheric rivers, and changes in land atmospheric feedback. Atmospheric river is the most common of the factors for drought demise, over most of the regions in the eastern, and central U.S. tropical cyclones are important causes over the Southwest, the South in fall, and the Southeast in summer. Evolving land atmospheric feedback is a factor mainly over the central and southwestern United States. These attributions estimated may not be representative of the long-term climatologies of drought demise due to the short duration of MERRA-2. A representativeness test is conducted for estimating the three impacts on drought demise using subsamples from a large ensemble of climate model simulation including several centuries of data. Thirty to forty years is not long enough to be representative of local long-term statistics for the attribution of the causes of demise of extreme events like drought but may be adequate at regional scales. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000519227000014 |
WOS关键词 | SOUTHEASTERN UNITED-STATES ; SOIL-MOISTURE ; TROPICAL CYCLONES ; ATMOSPHERIC CONTROLS ; CLIMATE MODELS ; GREAT-PLAINS ; PRECIPITATION ; FRAMEWORK ; VARIABILITY ; RESOLUTION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/280078 |
专题 | 气候变化 |
作者单位 | 1.George Mason Univ, Dept Atmospher Ocean & Earth Sci, Fairfax, VA 22030 USA; 2.Ctr Ocean Land Atmosphere Studies, Fairfax, VA USA |
推荐引用方式 GB/T 7714 | Wu, Jiexia,Dirmeyer, Paul A.. Drought Demise Attribution Over CONUS[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(4). |
APA | Wu, Jiexia,&Dirmeyer, Paul A..(2020).Drought Demise Attribution Over CONUS.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(4). |
MLA | Wu, Jiexia,et al."Drought Demise Attribution Over CONUS".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.4(2020). |
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