DOI: 10.1175/JCLI-D-15-0616.1
Scopus记录号: 2-s2.0-84974829665
论文题名: The precipitation response to an idealized subtropical continent
作者: Maroon E.A. ; Frierson D.M.W. ; Kang S.M. ; Scheff J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 12 起始页码: 4543
结束页码: 4564
语种: 英语
Scopus关键词: Atmospheric temperature
; Climate models
; Earth atmosphere
; Precipitation (chemical)
; Solar radiation
; Tropics
; Energy transport
; General circulation model
; Geographic location
; Hadley circulation
; Intertropical convergence zone
; Monsoons
; Precipitation (meteorology)
; atmospheric dynamics
; atmospheric general circulation model
; atmospheric modeling
; computer simulation
; energy budget
; Hadley cell
; intertropical convergence zone
; Northern Hemisphere
; numerical model
; orographic effect
; precipitation assessment
; subtropical region
英文摘要: A subtropical continent is added to two aquaplanet atmospheric general circulation models (AGCMs) to better understand the influence of land on tropical circulation and precipitation. The first model, the gray-radiation moist (GRaM) AGCM, has simplified physics, while the second model, the GFDL Atmospheric Model version 2.1 (AM2.1), is a fully comprehensive AGCM. Both models have a continent that is 60° wide in longitude from 10° to 30°N, in an otherwise slab-ocean-covered world. The precipitation response varies with cloudy- and clear-sky feedbacks and depends on continental albedo. In GRaM simulations with a continent, precipitation in the Northern Hemisphere decreases mostly as a result of decreased evaporation. In AM2.1 simulations, precipitation also shifts southward via Hadley circulation changes due to increasing albedo, but the radiative impact of clouds and moisture creates a more complex response. Results are similar when a seasonal cycle of insolation is included in AM2.1 simulations. The impact of a large, bright subtropical continent is to shift precipitation to the opposite hemisphere. In these simulations, the hemisphere of greater tropical precipitation is better predicted by the hemisphere with greater atmospheric energy input, as has been shown in previous literature, rather than the hemisphere that has higher surface temperature. © 2016 American Meteorological Society. 资助项目: MSIP, Ministry of Science, ICT and Future Planning
; NSF, National Science Foundation
; NSF, National Science Foundation
; NSF, National Science Foundation
; NRF, National Research Foundation of Korea
; NSF, National Science Foundation
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49940
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States
Recommended Citation:
Maroon E.A.,Frierson D.M.W.,Kang S.M.,et al. The precipitation response to an idealized subtropical continent[J]. Journal of Climate,2016-01-01,29(12)