DOI: 10.1002/2015MS000568
Scopus记录号: 2-s2.0-84973596894
论文题名: The role of precipitation and spatial organization in the response of trade-wind clouds to warming
作者: Vogel R ; , Nuijens L ; , Stevens B
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2016
卷: 8, 期: 2 起始页码: 843
结束页码: 862
语种: 英语
英文关键词: Boundary layers
; Commerce
; Feedback
; Heat flux
; Large eddy simulation
; Water content
; Cloud feedbacks
; Lifting condensation levels
; Liquid water content
; Marine boundary layer clouds
; Moisture-convection feedback
; Spatial organization
; Surface latent heat fluxes
; Thermodynamic structures
; Precipitation (meteorology)
; albedo
; boundary layer
; climate feedback
; cloud cover
; condensation
; convective cloud
; large eddy simulation
; latent heat flux
; marine atmosphere
; moisture flux
; precipitation (climatology)
; spatial distribution
; trade wind
; warming
英文摘要: Using highly resolved large-eddy simulations on two different domain sizes, we investigate the influence of precipitation and spatial organization on the thermodynamic structure of the trade-wind layer, under a uniform 4 K warming at constant relative humidity. In nonprecipitating simulations, the increased surface latent heat flux in the warmer climate produces a deeper and drier cloud layer with reduced cloud fractions between 1.5 and 4 km. Precipitation prevents the deepening and drying of the cloud layer in response to warming. Cloud fractions still decrease in the upper cloud layer, because stratiform outflow layers near cloud tops are less pronounced and because the larger liquid water contents are confined to narrower updrafts. Simulations on a 16-fold larger domain lead to the spatial organization of clouds into larger and deeper cloud clusters. The presence of deeper clouds results in a shallower, warmer, and drier trade-wind layer, with strongly reduced cloud cover. The warming response in the precipitating large-domain simulation nevertheless remains similar to the small-domain precipitating simulation. On the large domain, deeper clouds can also develop without precipitation, because moisture-convection feedbacks strengthen in the absence of cold-pool dynamics. Overall, total cloud cover and albedo decrease only slightly with warming in all cases. This demonstrates the robustness of shallow cumuli—in particular of cloud fraction near the lifting condensation level—to changes in the large-scale environment. © 2016. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75895
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Max Planck Institute for Meteorology, Hamburg, Germany; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States
Recommended Citation:
Vogel R,, Nuijens L,, Stevens B. The role of precipitation and spatial organization in the response of trade-wind clouds to warming[J]. Journal of Advances in Modeling Earth Systems,2016-01-01,8(2)