DOI: 10.1175/JCLI-D-12-00545.1
Scopus记录号: 2-s2.0-84883147560
论文题名: A comparison between gravity wave momentum fluxes in observations and climate models
作者: Geller M.A. ; Alexander M.J. ; Love P.T. ; Bacmeister J. ; Ern M. ; Hertzog A. ; Manzini E. ; Preusse P. ; Sato K. ; Scaife A.A. ; Zhou T.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 17 起始页码: 6383
结束页码: 6405
语种: 英语
Scopus关键词: Community atmosphere model
; Environmental model
; Gravity wave momentum
; High-resolution models
; Long-duration balloons
; Observational method
; Satellite measurements
; Spatial and temporal scale
; Climate models
; Momentum
; Specifications
; Temperature measurement
; Gravity waves
; atmospheric dynamics
; balloon observation
; climate modeling
; comparative study
; geographical distribution
; gravity wave
; momentum
; observational method
; parameterization
; radiosonde
; satellite data
; spatial variation
; temporal variation
英文摘要: For the first time, a formal comparison is made between gravity wave momentum fluxes in models and those derived from observations. Although gravity waves occur over a wide range of spatial and temporal scales, the focus of this paper is on scales that are being parameterized in present climatemodels, sub-1000-kmscales. Only observational methods that permit derivation of gravity wave momentum fluxes over large geographical areas are discussed, and these are from satellite temperature measurements, constant-density long-duration balloons, and high-vertical-resolution radiosonde data. The models discussed include two high-resolution models in which gravity waves are explicitly modeled, Kanto and the Community Atmosphere Model, version 5 (CAM5), and three climate models containing gravity wave parameterizations,MAECHAM5, Hadley Centre Global Environmental Model 3 (HadGEM3), and the Goddard Institute for Space Studies (GISS) model. Measurements generally show similar flux magnitudes as in models, except that the fluxes derived from satellite measurements fall off more rapidly with height. This is likely due to limitations on the observable range of wavelengths, although other factors may contribute. When one accounts for this more rapid fall off, the geographical distribution of the fluxes from observations and models compare reasonably well, except for certain features that depend on the specification of the nonorographic gravity wave source functions in the climate models. For instance, both the observed fluxes and those in the high-resolution models are very small at summer high latitudes, but this is not the case for some of the climate models. This comparison between gravity wave fluxes from climate models, high-resolution models, and fluxes derived from observations indicates that such efforts offer a promising path toward improving specifications of gravity wave sources in climate models. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51692
Appears in Collections: 气候变化事实与影响
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作者单位: Stony Brook University, Stony Brook, NY, United States; NorthWest Research Associates/CoRA, Boulder, CO, United States; National Center for Atmospheric Research, Boulder, CO, United States; Forschungszentrum Julich GmbH, Julich, Germany; Ecole Polytechnique, Palaiseau, France; Max Planck Institute for Meteorology, Hamburg, Germany; Department of Earth and Planetary Science,Graduate School of Science, University of Tokyo, Tokyo, Japan; Met Office Hadley Centre, Exeter, United Kingdom; NASA Goddard Institute for Space Studies,and Center for Climate Systems Research, Columbia University, NY, United States
Recommended Citation:
Geller M.A.,Alexander M.J.,Love P.T.,et al. A comparison between gravity wave momentum fluxes in observations and climate models[J]. Journal of Climate,2013-01-01,26(17)