DOI: 10.1175/JCLI-D-13-00446.1
Scopus记录号: 2-s2.0-84902089838
论文题名: Causes of increasing aridification of the mediterranean region in response to rising greenhouse gases
作者: Seager R. ; Liu H. ; Henderson N. ; Simpson I. ; Kelley C. ; Shaw T. ; Kushnir Y. ; Ting M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 12 起始页码: 4655
结束页码: 4676
语种: 英语
Scopus关键词: Budget control
; Climate change
; Climate models
; Drying
; Greenhouse gases
; Weather forecasting
; Central Mediterranean
; Coupled Model Intercomparison Project
; European centre for medium-range weather forecasts
; Historical simulation
; Hydrologic cycles
; Mediterranean region
; Moisture convergence
; Moisture flux convergences
; Moisture
; aridification
; atmospheric moisture
; climate change
; climate modeling
; eddy
; evaporation
; greenhouse gas
; hydrological cycle
; precipitation (climatology)
; weather forecasting
; Europe
; Mediterranean Sea
英文摘要: The hydrological cycle in the Mediterranean region, as well as its change over the coming decades, is investigated using the Interim European Centre for Medium-Range Weather Forecasts Re-Analysis (ERAInterim) and phase 5 of the Coupled Model Intercomparison Project (CMIP5) historical simulations and projections of the coming decades. The Mediterranean land regions have positive precipitation minus evaporation, P2E, in winter and negative P2E in summer. According to ERA-Interim, positive P2E over land in winter is sustained by transient eddy moisture convergence and opposed by mean flow moisture divergence. Dry mean flow advection is important for opposing the transient eddy moisture flux convergence in the winter half year and the mass divergent mean flow is a prime cause of negative P2E in the summer half year. These features are well reproduced in the CMIP5 ensemble. The models predict reduced P2E over the Mediterranean region in the future year-round. For both land and sea, a common cause of drying is increased mean flow moisture divergence. Changes in transient eddy moisture fluxes largely act diffusively and cause drying over the sea and moistening over many land areas to the north in winter and drying over western land areas and moistening over the eastern sea in summer. Increased mean flow moisture divergence is caused by both the increase in atmospheric humidity in a region of mean flow divergence and strengthening of the mass divergence. Increased mass divergence is related to increased high pressure over the central Mediterranean in winter and over the Atlantic and northern Europe in summer, which favors subsidence and low-level divergence over the Mediterranean region. © 2014 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51032
Appears in Collections: 气候变化事实与影响
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作者单位: Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States
Recommended Citation:
Seager R.,Liu H.,Henderson N.,et al. Causes of increasing aridification of the mediterranean region in response to rising greenhouse gases[J]. Journal of Climate,2014-01-01,27(12)