气候变化领域集成服务门户(CCPortal): North Atlantic integrated water vapor transport-from 850 to 2100 CE: Impacts on Western European rainfall

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DOI	10.1175/JCLI-D-19-0348.1
	North Atlantic integrated water vapor transport-from 850 to 2100 CE: Impacts on Western European rainfall
	Sousa P.M.; Ramos A.M.; Raible C.C.; Messmer M.; Tomé R.; Pinto J.G.; Trigo R.M.
发表日期	2020
ISSN	0894-8755
起始页码	263
结束页码	279
卷号	33 期号:1
英文摘要	Moisture transport over the northeastern Atlantic Ocean is an important process governing precipitation distribution and variability over western Europe. To assess its long-term variability, the vertically integrated horizontal water vapor transport (IVT) from a long-term climate simulation spanning the period 850-2100 CE was used. Results show a steady increase in moisture transport toward western Europe since the late-nineteenth century that is projected to expand during the twenty-first century under the RCP8.5 scenario. The projected IVT for 2070-99 significantly exceeds the range given by interannual-interdecadal variability of the last millennium. Changes in IVT are in line with significant increases in tropospheric moisture content, driven by the concurrent rise in surface temperatures associated with the anthropogenic climate trend. On regional scales, recent and projected precipitation changes over the British Isles follow the global positive IVT trend, whereas a robust precipitation decrease over Iberia is identified in the twenty-first century, particularly during autumn. This indicates a possible extension of stable and dry summer conditions and a decoupling between moisture availability and dynamical forcing. The investigation of circulation features reveals a mean poleward shift of moisture corridors and associated atmospheric rivers. In particular, in Iberia, a significant increase in the frequency of dry weather types is observed, accompanied by a decrease in the frequency of wet types. An opposite response is observed over the British Isles. These changes imply a stronger meridional north-south dipole in terms of pressure and precipitation distributions, enhancing the transport toward central Europe rather than to Iberia. © 2019 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).
英文关键词	Moisture; Anthropogenic climate; Integrated water vapors; Inter-decadal variability; Long-term variability; Northeastern Atlantic; Precipitation distribution; Tropospheric moisture; Water vapor transport; Water vapor; annual variation; decadal variation; moisture transfer; precipitation assessment; rainfall; troposphere; water vapor; Atlantic Ocean; Atlantic Ocean (Northeast); Iberian Peninsula; United Kingdom
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171568
作者单位	Instituto Dom Luiz, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal; Oeschger Centre for Climate Change Research, Climate and Environmental Physics, University of Bern, Bern, Switzerland; Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germany; Departmento de Meteorologia, Instituto de Geociências, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; School of Earth Sciences, University of Melbourne, Melbourne, VIC, Australia
推荐引用方式 GB/T 7714	Sousa P.M.,Ramos A.M.,Raible C.C.,et al. North Atlantic integrated water vapor transport-from 850 to 2100 CE: Impacts on Western European rainfall[J],2020,33(1).
APA	Sousa P.M..,Ramos A.M..,Raible C.C..,Messmer M..,Tomé R..,...&Trigo R.M..(2020).North Atlantic integrated water vapor transport-from 850 to 2100 CE: Impacts on Western European rainfall.Journal of Climate,33(1).
MLA	Sousa P.M.,et al."North Atlantic integrated water vapor transport-from 850 to 2100 CE: Impacts on Western European rainfall".Journal of Climate 33.1(2020).