DOI: 10.1175/JCLI-D-11-00648.1
Scopus记录号: 2-s2.0-84867674628
论文题名: Daily, global, high-resolution SST and sea ice reanalysis for 1985-2007 using the OSTIA system
作者: Roberts-Jones J. ; Fiedler E.K. ; Martin M.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 18 起始页码: 6215
结束页码: 6232
语种: 英语
Scopus关键词: Atmospheric observations
; Climate record
; Data assimilation
; Satellite observations
; Sea surface temperature (SST)
; Atmospheric temperature
; Data processing
; Oceanography
; Sea ice
; accuracy assessment
; Along Track Scanning Radiometer
; data assimilation
; Northern Hemisphere
; satellite data
; sea ice
; sea surface temperature
; Southern Hemisphere
; temperature gradient
英文摘要: A sea surface temperature (SST) and sea ice reanalysis has been produced at theMet Office based on the Operational SST and Sea Ice Analysis (OSTIA) system. The OSTIA reanalysis produces daily, highresolution, global foundation SST and sea ice concentration fields from 1 January 1985 to 31 December 2007. The SST reanalysis uses reprocessed satellite and in situ observations that are assimilated using a multiscale optimal-interpolation-type scheme similar to that used in the near-real-time OSTIA system. Validation of the SST analysis using assimilated in situ observation-minus-background statistics shows that the accuracy of the analysis increases throughout the reanalysis period; the global root-mean-square difference is approximately 0.50 Kby 2007. This approach to validation is supported in the recent period by results from comparisons with independent near-surface Argo data against which a global standard deviation error of 0.55 K was calculated. Assessment of the OSTIA reanalysis at high latitudes demonstrates that the SST and sea ice fields are more consistent with one another in the Southern Hemisphere than in the Northern Hemisphere. Comparison of the sea ice extents to those in a similar reanalysis shows OSTIA to have larger extents in the Northern Hemisphere, and the Southern Hemisphere extents are similar. The OSTIA reanalysis SSTs are shown to be regionally comparable with similar reanalyses, with the largest differences occurring at high latitudes in the summer hemisphere. Differences are observed around the ice edge and in regions with high SST gradients. The OSTIA reanalysis provides a valuable high-resolution addition to the satellite period SST data record that makes use of the (Advanced) Along-Track Scanning Radiometer [(A)ATSR] multimission data. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52239
Appears in Collections: 气候变化事实与影响
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作者单位: Met Office, Exeter, Devon, United Kingdom
Recommended Citation:
Roberts-Jones J.,Fiedler E.K.,Martin M.J.. Daily, global, high-resolution SST and sea ice reanalysis for 1985-2007 using the OSTIA system[J]. Journal of Climate,2012-01-01,25(18)