Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-15199-2019 |
The role of spring dry zonal advection in summer drought onset over the US Great Plains | |
Erfanian, Amir; Fu, Rong | |
2019-12-16 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:24页码:15199-15216 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | This study addresses the role of the atmospheric moisture budget in determining the onset and development of summer droughts over the North American Great Plains (GP) using two state-of-the-art reanalysis datasets. We identified zonal moisture advection as the main cause of severe tropospheric drying during the extreme droughts in the southern GP in 2011 and northern GP in 2012. For both events, the eastward advection of anomalously dry and warm air in the free troposphere in spring set the stage for summer drought. This led to a sharp drop in relative humidity above the boundary layer, enhancing dry entrainment and suppressing deep convection. Further breakdown of the zonal advection into dynamic (caused by circulation anomalies) and thermodynamic (caused by moisture anomalies) contributions reveals dominance of thermodynamic advection in the tropospheric drying observed during the onset of both 2011 and 2012 droughts. The dependence of thermodynamic advection on the moisture gradient links springtime precipitation in the Rockies and southwestern US, the source region of the anomalous dry advection, to the GP summer precipitation (with correlations > 0.4 using gauge-based data). Identifying this previously overlooked precursor of the GP summer droughts improves our predictive understanding of drought onset mechanisms over the region. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000503008000001 |
WOS关键词 | ATMOSPHERIC MOISTURE BUDGET ; ERA-INTERIM REANALYSIS ; UNITED-STATES ; DEEP CONVECTION ; HEAT WAVES ; PRECIPITATION ; MECHANISMS ; VARIABILITY ; CLIMATE ; LAND |
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/224131 |
专题 | 环境与发展全球科技态势 |
作者单位 | Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA |
推荐引用方式 GB/T 7714 | Erfanian, Amir,Fu, Rong. The role of spring dry zonal advection in summer drought onset over the US Great Plains[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(24):15199-15216. |
APA | Erfanian, Amir,&Fu, Rong.(2019).The role of spring dry zonal advection in summer drought onset over the US Great Plains.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(24),15199-15216. |
MLA | Erfanian, Amir,et al."The role of spring dry zonal advection in summer drought onset over the US Great Plains".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.24(2019):15199-15216. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Erfanian, Amir]的文章 |
[Fu, Rong]的文章 |
百度学术 |
百度学术中相似的文章 |
[Erfanian, Amir]的文章 |
[Fu, Rong]的文章 |
必应学术 |
必应学术中相似的文章 |
[Erfanian, Amir]的文章 |
[Fu, Rong]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论