Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13439 |
Stomatal response to humidity and CO2 implicated in recent decline in US evaporation | |
Rigden, Angela J.; Salvucci, Guido D. | |
2017-03-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Evapotranspiration, defined as the total flux of water from the land surface to the atmosphere, is a major component of the hydrologic cycle and surface energy balance. Although evapotranspiration is expected to intensify with increasing temperatures, long-term, regional trends in evapotranspiration remain uncertain due to spatially and temporally limited direct measurements. In this study, we utilize an emergent relation between the land surface and atmospheric boundary layer to infer daily evapotranspiration from historical meteorological data collected at 236 weather stations across the United States. Our results suggest a statistically significant (alpha = 0.05) decrease in evapotranspiration of approximately 6% from 1961 to 2014, with a significant (alpha = 0.05) sharp decline of 13% from 1998 to 2014. We attribute the decrease in evapotranspiration mostly to declines in surface conductance, but also to offsetting changes in longwave radiation, wind speed, and incoming solar radiation. Using an established stomatal conductance model, we explain the changes in inferred surface conductance as a response to increases in carbon dioxide and, more recently, to an abrupt decrease in atmospheric humidity. |
英文关键词 | biosphere-atmosphere interaction evaporation evapotranspiration relative humidity stomatal conductance surface conductance |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000396829300016 |
WOS关键词 | WATER-USE EFFICIENCY ; CARBON-DIOXIDE ; EVAPOTRANSPIRATION ; CONDUCTANCE ; FLUXNET ; MODEL ; TRENDS ; AVHRR ; VAPOR |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
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/17534 |
专题 | 气候变化 资源环境科学 |
作者单位 | Boston Univ, Dept Earth & Environm, 675 Commonwealth Ave, Boston, MA 02215 USA |
推荐引用方式 GB/T 7714 | Rigden, Angela J.,Salvucci, Guido D.. Stomatal response to humidity and CO2 implicated in recent decline in US evaporation[J]. GLOBAL CHANGE BIOLOGY,2017,23(3). |
APA | Rigden, Angela J.,&Salvucci, Guido D..(2017).Stomatal response to humidity and CO2 implicated in recent decline in US evaporation.GLOBAL CHANGE BIOLOGY,23(3). |
MLA | Rigden, Angela J.,et al."Stomatal response to humidity and CO2 implicated in recent decline in US evaporation".GLOBAL CHANGE BIOLOGY 23.3(2017). |
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