DOI: 10.1002/2014MS000313
Scopus记录号: 2-s2.0-85027925622
论文题名: Sensitivity of the water cycle over the Indian Ocean and Maritime Continent to parameterized physics in a regional model
作者: Ulate M ; , Dudhia J ; , Zhang C
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2014
卷: 6, 期: 4 起始页码: 1095
结束页码: 1120
语种: 英语
英文关键词: Atmospheric thermodynamics
; Budget control
; Clouds
; Parameterization
; Troposphere
; Indian ocean
; Planetary boundary layers
; Regional model
; sensitivity cumulus scheme
; Water budget
; WRF
; Boundary layers
; boundary layer
; cumulus
; data assimilation
; evaporation
; hydrological cycle
; parameterization
; regional climate
; simulation
; water exchange
; Indian Ocean
英文摘要: A regional model was used to simulate the water cycle over the Indian Ocean (IO) and Maritime Continent (MC). Sixteen 92 day simulations were performed using different combinations of eight cumulus parameterization schemes and three planetary boundary-layer (PBL) parameterization schemes. The strength of the water cycle in the IO and MC, measured by its domain mean precipitation and precipitable water, differs substantially among the simulations. The large spread of water cycle strength is mainly toward dry biases in comparison to global data assimilation products. The simulated water cycle, its spread, and biases differ between the IO and MC. Influences of PBL schemes can penetrate into the upper troposphere and those by cumulus schemes into the boundary layer. Dry biases in the simulations are produced mainly because of feedbacks among erroneously low diabatic heating peaks, shallow moisture convergence layers, dry lower troposphere, and weak surface evaporation. There is no single type of parameterization scheme that can be identified to be the main sources of the dry biases. It is the combination of errors from three types of parameterization schemes, namely, cumulus, PBL, and microphysics, that makes the simulated water cycle unrealistic. The lesson learned is that the tropical water cycle can be better simulated only by improving parameterization schemes of different processes all together as a package. Key Points: The water cycle can be better simulated only by improving model physics Biases produced by a PBL scheme can penetrate into the middle troposphere Biases produced by cumulus schemes can penetrate into the boundary layer © 2014. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/76076
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: Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States; National Center for Atmospheric Research, Boulder, CO, United States
Recommended Citation:
Ulate M,, Dudhia J,, Zhang C. Sensitivity of the water cycle over the Indian Ocean and Maritime Continent to parameterized physics in a regional model[J]. Journal of Advances in Modeling Earth Systems,2014-01-01,6(4)