Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031460 |
Large-Scale Atmospheric Circulation Patterns Associated With US Great Plains Warm Season Droughts Revealed by Self-Organizing Maps | |
Zhuang, Yizhou1; Fu, Rong1; Wang, Hongqing2 | |
2020-03-16 | |
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:5 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | This study uses a multivariate self-organizing map approach to diagnose precipitation anomalies over the United States' Great Plains during the warm season (April-August) and the associated anomalous large-scale atmospheric patterns, as represented by standardized anomalies of 500 hPa geopotential (Z500 '), integrated vapor transport (IVT '), and convective inhibition index (CINi '). Circulation patterns favoring dryness identified by the method are generally consistent with those shown in previous studies, but this study provides a more comprehensive and probabilistic characterization of those that favor drought over the Southern Great Plains (SGP) and the Central Great Plains (CGP) and their temporal evolutions. Six circulation types that are associated with warm season rainfall variability over the Great Plains are identified. The SGP droughts are attributable to more frequent and persistent northern low-southern high as well as dominant high circulation types and are connected to larger negative CINi '. In contrast, CGP droughts are attributable to more frequent and persistent western low-eastern high, or northern high-southern low, or dominant high patterns, and are linked to a larger negative IVT ', but not larger CINi '. Thus, these results suggest that land surface dryness and a stable atmospheric boundary layer may play a more important role over the SGP than reduced moisture transport in warm season droughts, but reduced moisture transport may play a more important role than thermodynamic stability in droughts over the CGP. |
英文关键词 | self-organizing maps U S Great Plains drought large-scale atmospheric pattern |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000519602000010 |
WOS关键词 | CONVECTIVE INSTABILITY PATHWAY ; DEEP CONVECTION ; CLIMATE ; PRECIPITATION ; VARIABILITY ; MODULATION ; ORIGINS ; OCEAN ; LAND |
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/280114 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA; 2.Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Zhuang, Yizhou,Fu, Rong,Wang, Hongqing. Large-Scale Atmospheric Circulation Patterns Associated With US Great Plains Warm Season Droughts Revealed by Self-Organizing Maps[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(5). |
APA | Zhuang, Yizhou,Fu, Rong,&Wang, Hongqing.(2020).Large-Scale Atmospheric Circulation Patterns Associated With US Great Plains Warm Season Droughts Revealed by Self-Organizing Maps.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(5). |
MLA | Zhuang, Yizhou,et al."Large-Scale Atmospheric Circulation Patterns Associated With US Great Plains Warm Season Droughts Revealed by Self-Organizing Maps".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.5(2020). |
条目包含的文件 | 条目无相关文件。 |
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