DOI: 10.1007/s00382-011-1127-9
Scopus记录号: 2-s2.0-84863008896
论文题名: Simulating the diurnal cycle of rainfall in global climate models: Resolution versus parameterization
作者: Dirmeyer P.A. ; Cash B.A. ; Kinter III J.L. ; Jung T. ; Marx L. ; Satoh M. ; Stan C. ; Tomita H. ; Towers P. ; Wedi N. ; Achuthavarier D. ; Adams J.M. ; Altshuler E.L. ; Huang B. ; Jin E.K. ; Manganello J.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 39, 期: 2017-01-02 起始页码: 399
结束页码: 418
语种: 英语
英文关键词: Climate model
; Diurnal cycle
; GCM
; Parameterization
; Precipitation
; Resolution
英文摘要: The effects of horizontal resolution and the treatment of convection on simulation of the diurnal cycle of precipitation during boreal summer are analyzed in several innovative weather and climate model integrations. The simulations include: season-long integrations of the Non-hydrostatic Icosahedral Atmospheric Model (NICAM) with explicit clouds and convection; year-long integrations of the operational Integrated Forecast System (IFS) from the European Centre for Medium-range Weather Forecasts at three resolutions (125, 39 and 16 km); seasonal simulations of the same model at 10 km resolution; and seasonal simulations of the National Center for Atmospheric Research (NCAR) low-resolution climate model with and without an embedded two-dimensional cloud-resolving model in each grid box. NICAM with explicit convection simulates best the phase of the diurnal cycle, as well as many regional features such as rainfall triggered by advancing sea breezes or high topography. However, NICAM greatly overestimates mean rainfall and the magnitude of the diurnal cycle. Introduction of an embedded cloud model within the NCAR model significantly improves global statistics of the seasonal mean and diurnal cycle of rainfall, as well as many regional features. However, errors often remain larger than for the other higher-resolution models. Increasing resolution alone has little impact on the timing of daily rainfall in IFS with parameterized convection, yet the amplitude of the diurnal cycle does improve along with the representation of mean rainfall. Variations during the day in atmospheric prognostic fields appear quite similar among models, suggesting that the distinctive treatments of model physics account for the differences in representing the diurnal cycle of precipitation. © 2011 The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55217
Appears in Collections: 过去全球变化的重建
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作者单位: Center for Ocean-Land-Atmosphere Studies, Calverton, MD, United States; George Mason University, Fairfax, VA, United States; The European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom; Research Institute for Global Change/Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, Japan
Recommended Citation:
Dirmeyer P.A.,Cash B.A.,Kinter III J.L.,et al. Simulating the diurnal cycle of rainfall in global climate models: Resolution versus parameterization[J]. Climate Dynamics,2012-01-01,39(2017-01-02)