DOI: 10.1007/s00382-013-1890-x
Scopus记录号: 2-s2.0-84906088054
论文题名: Representation of tropical subseasonal variability of precipitation in global reanalyses
作者: Kim D. ; Lee M.-I. ; Kim D. ; Schubert S.D. ; Waliser D.E. ; Tian B.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 43, 期: 2017-01-02 起始页码: 517
结束页码: 534
语种: 英语
英文关键词: Convectively-coupled equatorial waves
; Madden-Julian oscillation
; Precipitation
; Reanalysis
; Subseasonal variability
; Tropics
英文摘要: Tropical subseasonal variability of precipitation from five global reanalyses (RAs) is evaluated against Global Precipitation Climatology Project (GPCP) and Tropical Rainfall Measuring Mission (TRMM) observations. The RAs include the three generations of global RAs from the National Center for Environmental Prediction (NCEP), and two other RAs from the European Centre for Medium-Range Weather Forecasts (ECMWF) and the National Aeronautics and Space Administration/Goddard Space Flight Center (NASA/GSFC). The analysis includes comparisons of the seasonal means and subseasonal variances of precipitation, and probability densities of rain intensity in selected areas. In addition, the space-time power spectrum was computed to examine the tropical Madden-Julian Oscillation (MJO) and convectively coupled equatorial waves (CCEWs). The modern RAs show significant improvement in their representation of the mean state and subseasonal variability of precipitation when compared to the two older NCEP RAs: patterns of the seasonal mean state and the amplitude of subseasonal variability are more realistic in the modern RAs. However, the probability density of rain intensity in the modern RAs show discrepancies from observations that are similar to what the old RAs have. The modern RAs show higher coherence of CCEWs with observed variability and more realistic eastward propagation of the MJO precipitation. The modern RAs, however, exhibit common systematic deficiencies including: (1) variability of the CCEWs that tends to be either too weak or too strong, (2) limited coherence with observations for waves other than the MJO, and (3) a systematic phase lead or lag for the higher-frequency waves. © 2013 Springer-Verlag Berlin Heidelberg. 资助项目: JPL, National Aeronautics and Space Administration
; NASA, National Aeronautics and Space Administration
; NASA, National Aeronautics and Space Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54333
Appears in Collections: 过去全球变化的重建
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作者单位: Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, UNIST-gil 50, Ulsan, 689-798, South Korea; NASA Goddard Space Flight Center, Greenbelt, MD, United States; NASA Jet Propulsion Laboratory, Pasadena, CA, United States
Recommended Citation:
Kim D.,Lee M.-I.,Kim D.,et al. Representation of tropical subseasonal variability of precipitation in global reanalyses[J]. Climate Dynamics,2014-01-01,43(2017-01-02)