气候变化领域集成服务门户(CCPortal): Atmospheric Aridity and Apparent Soil Moisture Drought in European Forest During Heat Waves

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DOI	10.1029/2020GL087091
	Atmospheric Aridity and Apparent Soil Moisture Drought in European Forest During Heat Waves
	Lansu E.M.; van Heerwaarden C.C.; Stegehuis A.I.; Teuling A.J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:6
英文摘要	Land-atmosphere feedbacks, in particular the response of land evaporation to vapor pressure deficit (VPD) or the dryness of the air, remain poorly understood. Here we investigate the VPD response by analysis of a large database of eddy covariance flux observations and simulations using a conceptual model of the atmospheric boundary layer. Data analysis reveals that under high VPD and corresponding high temperatures, forest in particular reduces evaporation and emits more sensible heat. In contrast, grass increases evaporation and emits less sensible heat. Simulations show that this VPD feedback can induce significant temperature increases over forest of up to 2 K during heat wave conditions. It is inferred from the simulations that the effect of the VPD feedback corresponds to an apparent soil moisture depletion of more than 50%. This suggests that previous studies may have incorrectly attributed the effects of atmospheric aridity on temperature to soil dryness. ©2020. The Authors.
英文关键词	Atmospheric boundary layer; Climatology; Drought; Evaporation; Evapotranspiration; Forestry; Hydrostatic pressure; Soil moisture; European forests; Flux observation; Heat waves; High temperature; Land evaporation; Moisture depletion; Temperature increase; Vapor pressure deficit; Atmospheric temperature; database; drought; eddy covariance; evapotranspiration; grass; heat wave; sensible heat flux; simulation; soil moisture; vapor pressure
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170542
作者单位	Hydrology and Quantitative Water Management Group, Wageningen University, Wageningen, Netherlands; Meteorology and Air Quality Group, Wageningen University, Wageningen, Netherlands; European Forest Institute, Bonn, Germany
推荐引用方式 GB/T 7714	Lansu E.M.,van Heerwaarden C.C.,Stegehuis A.I.,et al. Atmospheric Aridity and Apparent Soil Moisture Drought in European Forest During Heat Waves[J],2020,47(6).
APA	Lansu E.M.,van Heerwaarden C.C.,Stegehuis A.I.,&Teuling A.J..(2020).Atmospheric Aridity and Apparent Soil Moisture Drought in European Forest During Heat Waves.Geophysical Research Letters,47(6).
MLA	Lansu E.M.,et al."Atmospheric Aridity and Apparent Soil Moisture Drought in European Forest During Heat Waves".Geophysical Research Letters 47.6(2020).