globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-015-2868-7
Scopus记录号: 2-s2.0-84944624359
论文题名:
An assessment of upper ocean salinity content from the Ocean Reanalyses Inter-comparison Project (ORA-IP)
作者: Shi L.; Alves O.; Wedd R.; Balmaseda M.A.; Chang Y.; Chepurin G.; Ferry N.; Fujii Y.; Gaillard F.; Good S.A.; Guinehut S.; Haines K.; Hernandez F.; Lee T.; Palmer M.; Peterson K.A.; Masuda S.; Storto A.; Toyoda T.; Valdivieso M.; Vernieres G.; Wang X.; Yin Y.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 49, 期:3
起始页码: 1009
结束页码: 1029
语种: 英语
英文关键词: Intercomparison ; Ocean reanalyses ; Salinity content
英文摘要: Many institutions worldwide have developed ocean reanalyses systems (ORAs) utilizing a variety of ocean models and assimilation techniques. However, the quality of salinity reanalyses arising from the various ORAs has not yet been comprehensively assessed. In this study, we assess the upper ocean salinity content (depth-averaged over 0–700 m) from 14 ORAs and 3 objective ocean analysis systems (OOAs) as part of the Ocean Reanalyses Intercomparison Project. Our results show that the best agreement between estimates of salinity from different ORAs is obtained in the tropical Pacific, likely due to relatively abundant atmospheric and oceanic observations in this region. The largest disagreement in salinity reanalyses is in the Southern Ocean along the Antarctic circumpolar current as a consequence of the sparseness of both atmospheric and oceanic observations in this region. The West Pacific warm pool is the largest region where the signal to noise ratio of reanalysed salinity anomalies is >1. Therefore, the current salinity reanalyses in the tropical Pacific Ocean may be more reliable than those in the Southern Ocean and regions along the western boundary currents. Moreover, we found that the assimilation of salinity in ocean regions with relatively strong ocean fronts is still a common problem as seen in most ORAs. The impact of the Argo data on the salinity reanalyses is visible, especially within the upper 500 m, where the interannual variability is large. The increasing trend in global-averaged salinity anomalies can only be found within the top 0–300 m layer, but with quite large diversity among different ORAs. Beneath the 300 m depth, the global-averaged salinity anomalies from most ORAs switch their trends from a slightly growing trend before 2002 to a decreasing trend after 2002. The rapid switch in the trend is most likely an artefact of the dramatic change in the observing system due to the implementation of Argo. © 2015, Springer-Verlag Berlin Heidelberg.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53108
Appears in Collections:过去全球变化的重建

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作者单位: Research and Development Branch, Bureau of Meteorology, Melbourne, VIC, Australia; European Centre for Medium-Range Weather Forecasting (ECMWF), Reading, United Kingdom; Geophysical Fluid Dynamics Laboratory (GFDL), Princeton University, Princeton, NJ, United States; University of Maryland, College Park, MD, United States; Meteorological Research Institute (MRI), Japan Meteorological Agency, Tsukuba, Japan; Ifremer, UMR 6523, LPO, CNRS/Ifremer/IRD/UBO, CS 10070, Plouzane, France; Met Office Hadley Centre, Exeter, United Kingdom; Collecte Localisation Satellites (CLS), Ramonville Saint‑Agne, France; NCEO, Reading University, Reading, United Kingdom; Mercator Océan, Ramonville Saint Agne, France; Jet Propulsion Laboratory (JPL), California Institute of Technology, Pasadena, CA, United States; Research and Development Center for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan; Euro-Mediterranean Centre for Climate Change (CMCC), Bologna, Italy; Global Modeling and Assimilation Office (GMAO), NASA, Washington, DC, United States; Joint Institute for Regional Earth System Science and Engineering (JIFRESSE), UCLA, Los Angeles, CA, United States; Department of Earth Science, Kongju National University, Gongju, South Korea; Institut de Recherche pour le Développement (IRD), Toulouse, France

Recommended Citation:
Shi L.,Alves O.,Wedd R.,et al. An assessment of upper ocean salinity content from the Ocean Reanalyses Inter-comparison Project (ORA-IP)[J]. Climate Dynamics,2017-01-01,49(3)
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