DOI: 10.1002/2016MS000871
Scopus记录号: 2-s2.0-85026636847
论文题名: Tangent linear superparameterization of convection in a 10 layer global atmosphere with calibrated climatology
作者: Kelly P ; , Mapes B ; , Hu I ; -K ; , Song S ; , Kuang Z
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期: 2 起始页码: 932
结束页码: 948
语种: 英语
英文关键词: Calibration
; Coastal zones
; Heat convection
; Moisture
; Troposphere
; Water vapor
; Atmosphere modeling
; Atmospheric cooling
; Interpretation of experiments
; Linear response functions
; Moist static energy
; Superparameterization
; Tropospheric moisture
; Water vapor fields
; Matrix algebra
; climatology
; convection
; cooling
; general circulation model
; Kelvin wave
; matrix
; numerical model
; troposphere
; water vapor
英文摘要: This paper describes a new intermediate global atmosphere model in which synoptic and planetary dynamics including the advection of water vapor are explicit in 10 layers, the time-mean flow is centered near a realistic state through the use of carefully calibrated time-independent 3-D forcings, and temporal anomalies of convective tendencies of heat and moisture in each column are represented as a linear matrix acting on the anomalous temperature and moisture profiles. Currently, this matrix is Kuang's [] linear response function (LRF) of a cyclic convection-permitting model (CCPM) in equilibrium with specified atmospheric cooling (i.e., without radiation or WISHE interactions, so it conserves column moist static energy exactly). The goal of this effort is to cleanly test the role of convection's free-tropospheric moisture sensitivity in tropical waves, without incurring large changes of mean climate that confuse the interpretation of experiments with entrainment parameters in the convection schemes of full-physics GCMs. When the sensitivity to free-tropospheric moisture is multiplied by a factor ranging from 0 to 2, the model's variability ranges from: (1) moderately strong convectively coupled Kelvin waves with speeds near 20 m s−1; to (0) similar but much weaker waves; to (2) similar but stronger and slightly faster waves as the water vapor field plays an increasingly important role. Longitudinal structure in the model's time-mean tropical flow is not fully realistic, and does change significantly with matrix-coupled variability, but further work on editing the anomaly physics matrix and calibrating the mean state could improve this class of models. © 2017. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75767
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: Pacific Northwest National Laboratory, Richland, WA, United States; Department of Atmospheric Sciences, University of Miami, Miami, FL, United States; Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States
Recommended Citation:
Kelly P,, Mapes B,, Hu I,et al. Tangent linear superparameterization of convection in a 10 layer global atmosphere with calibrated climatology[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(2)