DOI: 10.1175/JCLI-D-12-00090.1
Scopus记录号: 2-s2.0-84872901343
论文题名: A comparison of atmospheric reanalysis surface products over the ocean and implications for uncertainties in air-sea boundary forcing
作者: Chaudhuri A.H. ; Ponte R.M. ; Forget G. ; Heimbach P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 1 起始页码: 153
结束页码: 170
语种: 英语
Scopus关键词: Air temperature
; Atmospheric fields
; Atmospheric reanalysis
; Average field
; Boundary forcing
; Down-welling
; Down-welling radiation
; Ecmwf re-analysis
; Interannual
; Long waves
; Meridional winds
; Multiple products
; Ocean model
; Optimization procedures
; Physical assumptions
; Reanalysis
; Reanalysis project
; Satellite-derived observations
; Short-wave radiation
; Single product
; Specific humidity
; Stress field
; Surface air temperatures
; Surface products
; Atmospheric humidity
; Atmospheric temperature
; Oceanography
; Optimization
; Errors
; air temperature
; air-sea interaction
; atmospheric circulation
; downwelling
; error analysis
; longwave radiation
; optimization
; shortwave radiation
; uncertainty analysis
英文摘要: This paper investigates the uncertainties related to atmospheric fields from reanalysis products used in forcing ocean models. Four reanalysis products, namely from 1) the interim ECMWF Re-Analysis (ERAInterim), 2) version 2 of the Common Reference Ocean-Ice Experiments (CORE2), 3) the 25-Year Japanese Reanalysis Project (JRA-25), and 4) NCEP-NCAR, are evaluated against satellite-derived observations for eight different fields (zonal and meridional winds, precipitation, specific humidity, continental discharge, surface air temperature, and downwelling longwave and shortwave radiation fluxes). No single product is found to agree better in all fields with satellite-derived observations. Reanalysis products are mostly comparable to each other because of their similar physical assumptions and assimilation of common observations. Adjusted atmospheric fields from the Estimating the Circulation and Climate of the Ocean (ECCO) optimizations are also in agreement with other reanalysis products. Time-mean and time-variable errors are estimated separately and mapped globally in space, based on 14-day average fields to focus on monthly to interannual periods. Time-variable errors are larger in comparison to the signal than time-mean errors for most fields, thus justifying the need to separate them for studying uncertainties as well as formulating optimization procedures. Precipitation and wind stress fields show significant time-mean and time-variable errors whereas downwelling radiation, air temperature, and humidity fields show small time-mean errors but large time-variable errors, particularly in the tropics. Uncertainties based on evaluating multiple products presented here are considerably larger than uncertainties based on single product pairs. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52085
Appears in Collections: 气候变化事实与影响
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作者单位: Atmospheric and Environmental Research, Lexington, MA, United States; Massachusetts Institute of Technology, Cambridge, MA, United States
Recommended Citation:
Chaudhuri A.H.,Ponte R.M.,Forget G.,et al. A comparison of atmospheric reanalysis surface products over the ocean and implications for uncertainties in air-sea boundary forcing[J]. Journal of Climate,2013-01-01,26(1)