Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-18-0611.1 |
Physical Understanding of Human-Induced Changes in US Hot Droughts Using Equilibrium Climate Simulations | |
Cheng, Linyin1; Hoerling, Martin2; Liu, Zhiyong3,4; Eischeid, Jon5 | |
2019-07-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:14页码:4431-4443 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | Although the link between droughts and heat waves is widely recognized, how climate change affects this link remains uncertain. Here we assess how, and by how much, human-induced climate change affects summertime hot drought compound events over the contiguous United States. Results are derived by comparing hot drought statistics in long simulations of a coupled climate model (CESM1) subjected to year-1850 and year-2000 radiative forcings. Within each climate state, a strong and nonlinear dependency of heat-wave intensity on drought severity is found in water-limited regions of the southern Great Plains and southwestern United States whereas heat-wave intensity is found to be insensitive to drought severity in energy-limited regions of the northern and/or northeastern United States. Applying a statistical model that is based on pair-copula constructions, we find that anthropogenic warming leads to enhanced soil moisture-temperature coupling in water-limited areas of the southern Great Plains and/or southwestern United States and consequently amplifies the intensity of extreme heat waves during severe droughts. This strengthened coupling accounts for a substantial fraction of rising temperature extremes related to the long-term climate change in CESM1, highlighting the importance of changes in land-atmosphere feedback in a warmer climate. In contrast, coupling effects remain weak and largely unchanged in energy-limited regions, thereby yielding no appreciable contribution to heat-wave intensification over the northern and/or northeastern United States apart from the long-term warming effects. |
英文关键词 | Atmosphere-land interaction Climate change Hydrology Statistical techniques Climate models |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000472652400004 |
WOS关键词 | UNITED-STATES ; EUROPEAN SUMMER ; SOIL-MOISTURE ; HEAT WAVES ; TEMPERATURE VARIABILITY ; VINE-COPULA ; MODEL ; ATMOSPHERE ; DEPENDENCE ; FRAMEWORK |
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/184723 |
专题 | 气候变化 |
作者单位 | 1.Univ Arkansas, Dept Geosci, Fayetteville, AR 72701 USA; 2.NOAA, Phys Sci Div, Earth Syst Res Lab, Boulder, CO USA; 3.Sun Yat Sen Univ, Dept Ctr Water Resources & Environm, Guangzhou, Guangdong, Peoples R China; 4.Sun Yat Sen Univ, Guangdong Engn Technol Res Ctr Water Secur Regula, Guangzhou, Guangdong, Peoples R China; 5.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO USA |
推荐引用方式 GB/T 7714 | Cheng, Linyin,Hoerling, Martin,Liu, Zhiyong,et al. Physical Understanding of Human-Induced Changes in US Hot Droughts Using Equilibrium Climate Simulations[J]. JOURNAL OF CLIMATE,2019,32(14):4431-4443. |
APA | Cheng, Linyin,Hoerling, Martin,Liu, Zhiyong,&Eischeid, Jon.(2019).Physical Understanding of Human-Induced Changes in US Hot Droughts Using Equilibrium Climate Simulations.JOURNAL OF CLIMATE,32(14),4431-4443. |
MLA | Cheng, Linyin,et al."Physical Understanding of Human-Induced Changes in US Hot Droughts Using Equilibrium Climate Simulations".JOURNAL OF CLIMATE 32.14(2019):4431-4443. |
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