气候变化领域集成服务门户(CCPortal): Terrestrial evaporation response to modes of climate variability

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DOI	10.1038/s41612-018-0053-5
	Terrestrial evaporation response to modes of climate variability
	Martens B.; Waegeman W.; Dorigo W.A.; Verhoest N.E.C.; Miralles D.G.
发表日期	2018
ISSN	23973722
卷号	1 期号:1
英文摘要	Large-scale modes of climate variability (or teleconnection patterns), such as the El Niño Southern Oscillation and the North Atlantic Oscillation, affect local weather worldwide. However, the response of terrestrial water and energy fluxes to these modes of variability is still poorly understood. Here, we analyse the response of evaporation to 16 teleconnection patterns, using a simple supervised learning framework and global observation-based datasets of evaporation and its key climatic drivers. Our results show that the month-to-month variability in terrestrial evaporation is strongly affected by (coupled) oscillations in sea-surface temperature and air pressure: in specific hotspot regions, up to 40% of the evaporation dynamics can be explained by climate indices describing the fundamental modes of climate variability. While the El Niño Southern Oscillation affects the dynamics in land evaporation worldwide, other phenomena such as the East Pacific–North Pacific teleconnection pattern are more dominant at regional scales. Most modes of climate variability affect terrestrial evaporation by inducing changes in the atmospheric demand for water. However, anomalies in precipitation associated to particular teleconnections are crucial for the evaporation in water-limited regimes, as well as in forested regions where interception loss forms a substantial fraction of total evaporation. Our results highlight the need to consider the concurrent impact of these teleconnections to accurately predict the fate of the terrestrial branch of the hydrological cycle, and provide observational evidence to help improve the representation of surface fluxes in Earth system models. © 2018, The Author(s).
语种	英语
scopus关键词	atmospheric pressure; climate variation; El Nino-Southern Oscillation; evaporation; hydrological cycle; sea surface temperature; teleconnection; terrestrial environment
来源期刊	npj Climate and Atmospheric Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178194
作者单位	Laboratory of Hydrology and Water Management, Ghent University, Ghent, Belgium; Department of Data Analysis and Mathematical Modelling, Ghent University, Ghent, Belgium; Department of Geodesy and Geo-Information, Vienna University of Technology, Vienna, Austria
推荐引用方式 GB/T 7714	Martens B.,Waegeman W.,Dorigo W.A.,et al. Terrestrial evaporation response to modes of climate variability[J],2018,1(1).
APA	Martens B.,Waegeman W.,Dorigo W.A.,Verhoest N.E.C.,&Miralles D.G..(2018).Terrestrial evaporation response to modes of climate variability.npj Climate and Atmospheric Science,1(1).
MLA	Martens B.,et al."Terrestrial evaporation response to modes of climate variability".npj Climate and Atmospheric Science 1.1(2018).