Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD030897 |
Assessment of Atmospheric Reanalyses With Independent Observations in the Weddell Sea, the Antarctic | |
Jonassen, M. O.1,2; Valisuo, I.3; Vihma, T.3; Uotila, P.4; Makshtas, A. P.5; Launiainen, J.4 | |
2019-12-03 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Norway; Finland; Russia |
英文摘要 | Surface layer and upper-air in situ observations from two research vessel cruises and an ice station in the Weddell Sea from 1992 and 1996 are used to validate four current atmospheric reanalysis products: ERA-Interim, CFSR, JRA-55, and MERRA-2. Three of the observation data sets were not available for assimilation, providing a rare opportunity to validate the reanalyses in the otherwise datasparse region of the Antarctic against independent data. All four reanalyses produce 2 m temperatures warmer than the observations, and the biases vary from +2.0 K in CFSR to +2.8 K in MERRA-2. All four reanalyses are generally too warm also higher up in the atmospheric boundary layer (ABL), with biases up to +1.4 K (ERA-Interim). Cloud fractions are relatively poorly reproduced by the reanalyses, MERRA-2 and JRA-55 having the strongest positive and negative biases of about +30 % and -17 %, respectively. Skill scores of the error statistics reveal that ERA-Interim compares generally the most favorably against both the surface layer and the upper-air observations. CFSR compares the second best and JRA-55 and MERRA-2 have the least favorable scores. The ABL warm bias is consistent with previous evaluation studies in high latitudes, where more recent observations have been applied. As the amount of observations has varied depending on the decade, season, and region, the consistency of the warm bias suggests a need to improve the modeling systems, including data assimilation as well as ABL and surface parameterizations. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000500137600001 |
WOS关键词 | ICE DRAG COEFFICIENTS ; RADIATIVE FLUXES ; CLOUD FRACTION ; CLIMATE MODELS ; SURFACE ; TEMPERATURE ; VALIDATION ; VARIABILITY ; PERFORMANCE ; INVERSIONS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/225828 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Ctr Svalbard, Dept Arctic Geophys, Longyearbyen, Norway; 2.Univ Bergen, Inst Geophys, Bergen, Norway; 3.Finnish Meteorol Inst, Helsinki, Finland; 4.Univ Helsinki, Inst Atmospher & Earth Syst Res, Helsinki, Finland; 5.Arctic & Antarctic Res Inst, St Petersburg, Russia |
推荐引用方式 GB/T 7714 | Jonassen, M. O.,Valisuo, I.,Vihma, T.,et al. Assessment of Atmospheric Reanalyses With Independent Observations in the Weddell Sea, the Antarctic[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019. |
APA | Jonassen, M. O.,Valisuo, I.,Vihma, T.,Uotila, P.,Makshtas, A. P.,&Launiainen, J..(2019).Assessment of Atmospheric Reanalyses With Independent Observations in the Weddell Sea, the Antarctic.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES. |
MLA | Jonassen, M. O.,et al."Assessment of Atmospheric Reanalyses With Independent Observations in the Weddell Sea, the Antarctic".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2019). |
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