DOI: 10.1175/JCLI-D-14-00592.1
Scopus记录号: 2-s2.0-84997335789
论文题名: Comments on ''The tropospheric Land-Sea warming contrast as the driver of tropical sea level pressure changes''
作者: Makarieva A.M. ; Gorshkov V.G. ; Nefiodov A.V. ; Sheil D. ; Nobre A.D. ; Li B.-L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 10 起始页码: 4293
结束页码: 4307
语种: 英语
Scopus关键词: Isotherms
; Tropics
; Troposphere
; Observational data
; Pressure and temperature
; Sea level pressure
; Spatial differences
; Temporal variation
; Theoretical investigations
; Tropical troposphere
; Tropospheric temperature
; Sea level
; air-sea interaction
; sea level change
; sea level pressure
; troposphere
英文摘要: In their paper ''The tropospheric land-sea warming contrast as the driver of tropical sea level pressure changes,'' Bayr and Dommenget proposed a simple model of temperature-driven air redistribution to quantify the ratio between changes of sea level pressure psandmean tropospheric temperature Tain the tropics. Thismodel assumes that the height of the tropical troposphere is isobaric. Here problems with this model are identified.Arevised relationship between psand Tais derived governed by two parameters-the isobaric and isothermal heights-rather than just one. Further insight is provided by the earliermodel of Lindzen andNigam, which was the first to use the concept of isobaric height to relate tropical psto air temperature, and they did this by assuming that isobaric height is always around 3km and isothermal height is likewise near constant. Observational data, presented here, show that neither of these heights is spatially universal nor does their mean valuesmatch previous assumptions.Analyses showthat the ratio of the long-term changes in psandTaassociatedwith land-sea temperature contrasts in awarming climate-the focus of Bayr and Dommenget's work-is in fact determined by the corresponding ratio of spatial differences in the annualmean psand Ta. The latter ratio, reflecting lower pressure at higher temperature, is significantly impacted by themeridional pressure and temperature differences.Considerations of isobaric heights are shown to be unable to predict either spatial or temporal variation in ps.As noted by Bayr andDommenget, the role of moisture dynamics in generating sea level pressure variation remains in need of further theoretical investigations. © 2015 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50401
Appears in Collections: 气候变化事实与影响
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作者单位: Theoretical Physics Division, National Research Centre ''Kurchatov Institute'' B.P. Konstantinov Petersburg, Nuclear Physics Institute, St. Petersburg, Russian Federation; XIEG-UCR International Center for Arid Land Ecology, University of California Riverside, Riverside, CA, United States; Norwegian University of Life Sciences, Ås, Norway; School of Environment, Science and Engineering, Southern Cross University, Lismore, NSW, Australia; Center for International Forestry Research, Bogor, Indonesia; Centro de Ciencia do Sistema Terrestre INPE, São José dos Campos, São Paulo, Brazil
Recommended Citation:
Makarieva A.M.,Gorshkov V.G.,Nefiodov A.V.,et al. Comments on ''The tropospheric Land-Sea warming contrast as the driver of tropical sea level pressure changes''[J]. Journal of Climate,2015-01-01,28(10)