DOI: 10.1002/2014MS000422
Scopus记录号: 2-s2.0-84945490310
论文题名: How sensitive are aerosol-precipitation interactions to the warm rain representation?
作者: Hill A ; A ; , Shipway B ; J ; , Boutle I ; A
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2015
卷: 7, 期: 3 起始页码: 987
结束页码: 1004
语种: 英语
英文关键词: Aerosols
; Drops
; Precipitation (meteorology)
; Weather forecasting
; Aerosol-cloud interaction
; Bin microphysics
; Cloud microphysics
; Intercomparisons
; Kinematic model
; Liquid water paths
; Numerical weather prediction
; Sources of uncertainty
; Rain
; aerosol
; climate prediction
; cloud microphysics
; concentration (composition)
; magnitude
; parameterization
; precipitation (climatology)
; precipitation intensity
; prediction
; raindrop
; sensitivity analysis
; uncertainty analysis
英文摘要: It is widely acknowledged that aerosol-cloud interactions are a major uncertainty in climate and numerical weather prediction. One of the sources of uncertainty is the sensitivity of the cloud microphysics parameterization to changes in aerosol, in particular the response of precipitation. In this work, we conduct an idealized, dynamically consistent, intercomparison of warm rain microphysics schemes to understand this source of uncertainty. The aims of this investigation are: (i) investigate how sensitive precipitation susceptibility (S0) is to cloud microphysics representation and (ii) use S0 to determine the minimum complexity of microphysics required to produce a consistent precipitation response to changes in cloud drop number concentration (Nd). The main results from this work are: (i) over a large range of liquid water path and Nd, all the bulk schemes, but particularly the single moment schemes, artificially produce rain too rapidly. Relative to a reference bin microphysics scheme, this leads to a low in-cloud S0 and impacts the evolution of S0 over time. (ii) Rain evaporation causes surface S0 from all schemes to be larger than the cloud base S0. The magnitude of the change in S0 with altitude is dependent on the scheme and the representation of the rain drop size distribution. Overall, we show that single-moment schemes produce the largest range in the sensitivity of precipitation to changes in Nd. Modifying rain production parameterization alone does not reduce this spread. Instead, increasing the complexity of the rain representation to double-moment significantly improves this behavior and the overall consistency between schemes. © 2015. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75978
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: Met Office, Exeter, United Kingdom
Recommended Citation:
Hill A,A,, Shipway B,et al. How sensitive are aerosol-precipitation interactions to the warm rain representation?[J]. Journal of Advances in Modeling Earth Systems,2015-01-01,7(3)