DOI: 10.1002/2017MS001125
Scopus记录号: 2-s2.0-85031431728
论文题名: The Robust Relationship Between Extreme Precipitation and Convective Organization in Idealized Numerical Modeling Simulations
作者: Bao J ; , Sherwood S ; C ; , Colin M ; , Dixit V
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期: 6 起始页码: 2291
结束页码: 2303
语种: 英语
英文关键词: Climate models
; Oceanography
; Precipitation (meteorology)
; Surface waters
; Temperature distribution
; Tropics
; Water vapor
; Convective parameterization
; Extreme precipitation
; Large-scale circulation
; Numerical model simulations
; Radiative-convective equilibrium
; Sea surface temperatures
; Self aggregation
; Weather research and forecasting models
; Weather forecasting
; climate modeling
; convection
; convective system
; equilibrium
; extreme event
; numerical model
; parameterization
; precipitation (climatology)
; radiative forcing
; sea surface temperature
; surface water
; temperature profile
; tropical meteorology
; water vapor
英文摘要: The behavior of tropical extreme precipitation under changes in sea surface temperatures (SSTs) is investigated with the Weather Research and Forecasting Model (WRF) in three sets of idealized simulations: small-domain tropical radiative-convective equilibrium (RCE), quasi-global “aquapatch”, and RCE with prescribed mean ascent from the tropical band in the aquapatch. We find that, across the variations introduced including SST, large-scale circulation, domain size, horizontal resolution, and convective parameterization, the change in the degree of convective organization emerges as a robust mechanism affecting extreme precipitation. Higher ratios of change in extreme precipitation to change in mean surface water vapor are associated with increases in the degree of organization, while lower ratios correspond to decreases in the degree of organization. The spread of such changes is much larger in RCE than aquapatch tropics, suggesting that small RCE domains may be unreliable for assessing the temperature-dependence of extreme precipitation or convective organization. When the degree of organization does not change, simulated extreme precipitation scales with surface water vapor. This slightly exceeds Clausius-Clapeyron (CC) scaling, because the near-surface air warms 10–25% faster than the SST in all experiments. Also for simulations analyzed here with convective parameterizations, there is an increasing trend of organization with SST. © 2017. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75722
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: Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, University of New South Wales, Sydney, NSW, Australia
Recommended Citation:
Bao J,, Sherwood S,C,et al. The Robust Relationship Between Extreme Precipitation and Convective Organization in Idealized Numerical Modeling Simulations[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(6)