DOI: 10.1007/s00382-017-3587-z
Scopus记录号: 2-s2.0-85014127160
论文题名: Evaluation of energy fluxes in the NCEP climate forecast system version 2.0 (CFSv2)
作者: Rai A. ; Saha S.K.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-01-02 起始页码: 101
结束页码: 114
语种: 英语
Scopus关键词: air temperature
; albedo
; climate modeling
; coastal zone
; energy flux
; model validation
; parameterization
; sea ice
; snow
; top of atmosphere
; weather forecasting
; Antarctica
英文摘要: The energy fluxes at the surface and top of the atmosphere (TOA) from a long free run by the NCEP climate forecast system version 2.0 (CFSv2) are validated against several observation and reanalysis datasets. This study focuses on the annual mean energy fluxes and tries to link it with the systematic cold biases in the 2 m air temperature, particularly over the land regions. The imbalance in the long term mean global averaged energy fluxes are also evaluated. The global averaged imbalance at the surface and at the TOA is found to be 0.37 and 6.43 Wm−2, respectively. It is shown that CFSv2 overestimates the land surface albedo, particularly over the snow region, which in turn contributes to the cold biases in 2 m air temperature. On the other hand, surface albedo is highly underestimated over the coastal region around Antarctica and that may have contributed to the warm bias over that oceanic region. This study highlights the need for improvements in the parameterization of snow/sea-ice albedo scheme for a realistic simulation of surface temperature and that may have implications on the global energy imbalance in the model. © 2017, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109494
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Indian Institute of Tropical Meteorology, Dr. Homi Bhabha Road, Pune, 411008, India
Recommended Citation:
Rai A.,Saha S.K.. Evaluation of energy fluxes in the NCEP climate forecast system version 2.0 (CFSv2)[J]. Climate Dynamics,2018-01-01,50(2018-01-02)