DOI: 10.1175/JCLI-D-16-0561.1
Scopus记录号: 2-s2.0-85015906104
论文题名: Examining the Hydrological Variations in an Aquaplanet World Using Wave Activity Transformation
作者: Lu J. ; Sakaguchi K. ; Yang Q. ; Leung L.R. ; Chen G. ; Zhao C. ; Swenson E. ; Hou Z.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 7 起始页码: 2559
结束页码: 2576
语种: 英语
Scopus关键词: Atmospheric movements
; Atmospheric temperature
; Lagrange multipliers
; Mechanical waves
; Storms
; Surface waters
; Asymmetric component
; Extratropical cyclones
; Finite amplitude waves
; Hydrologic cycles
; Lagrangian circulation/transport
; Precipitation efficiency
; Sea surface temperature (SST)
; Transport
; Oceanography
; extratropical cyclone
; hydrological cycle
; Lagrangian analysis
; precipitation assessment
; Rossby wave
; sea surface temperature
; transport process
; water vapor
英文摘要: Building on the recent advent of the concept of finite-amplitude wave activity, a contour-following diagnostics for column water vapor (CWV) is developed and applied to a pair of aquaplanet model simulations to understand and quantify the higher moments in the global hydrological cycle. The Lagrangian nature of the diagnostics leads to a more tractable formalism for the transient, zonally asymmetric component of the hydrological cycle, with a strong linear relation emerging between the wave activity and the wave component of precipitation minus evaporation. The dry-versus-wet disparity in the transient hydrological cycle is measured by, and it is found to increase at a super-Clausius-Clapeyron rate at the poleward side of the mean storm track in response to a uniform sea surface temperature (SST) warming and the meridional structure of the increase can be largely attributed to the change of the meridional stirring scale of the midlatitude Rossby waves. Further scaling for indicates that the rate of the wavy hydrological cycle, measured by the ratio of to the CWV wave activity, is subdued almost everywhere in the extratropics, implying an overall weakening of the transient circulation. Extending the CWV wave activity analysis to the transient moist regions helps reveal some unique characteristics of atmospheric rivers in terms of transport function, minimum precipitation efficiency, and maximum hydrological cycle rate, as well as an overall weakening of the hydrological cycle rate in the atmospheric river regions under SST warming. © 2017 American Meteorological Society. 资助项目: DOE, U.S. Department of Energy
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49873
Appears in Collections: 气候变化事实与影响
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作者单位: Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States; Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Los Angeles, CA, United States; Center for Ocean-Land-Atmosphere Studies, George Mason University, Fairfax, VA, United States
Recommended Citation:
Lu J.,Sakaguchi K.,Yang Q.,et al. Examining the Hydrological Variations in an Aquaplanet World Using Wave Activity Transformation[J]. Journal of Climate,2017-01-01,30(7)