DOI: 10.1007/s00382-016-3036-4
Scopus记录号: 2-s2.0-84960092003
论文题名: Sources of skill in near-term climate prediction: generating initial conditions
作者: Carrassi A. ; Guemas V. ; Doblas-Reyes F.J. ; Volpi D. ; Asif M.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 47, 期: 12 起始页码: 3693
结束页码: 3712
语种: 英语
英文关键词: Climate dynamics
; Initialization methods
; Seasonal-to-decadal prediction
英文摘要: This study investigates the role of different areas of the ocean in driving the climate variability. The impact of both global and regional ocean nudging on the climate reconstruction obtained with the climate model EC-Earth v2.3 is studied over the period 1960–2012. Ocean temperature and salinity below the mixed layer are relaxed toward the monthly averages from the ORAS4 ocean reanalysis. Three coupled ocean–atmosphere simulations are considered: (1) global ocean nudging, (2) nudging in the global upper ocean (above 2000 m) and (3) nudging in the mid-latitude ocean and at full ocean depth. The experimental setup allows for identifying local and remote effects of nudging on different geographical areas. The validation is based on the correlation coefficients and the root mean square error skill score and concerns the following variables: ocean heat content, ocean barotropic streamfunction, intensity of the ocean gyres and indexes of convection, sea ice extension, near-surface air and sea surface temperature, and El Niño–Southern Oscillation 3.4 index. The results can be summarized as follows: (1) the positive impact on the reconstruction of the ocean state is found almost everywhere and for most of the analyzed variables, including unconstrained variables and/or regions, (2) deep-ocean nudging shows low impact on sea-surface temperature but a significant impact on the ocean circulation, (3) mid-latitude ocean nudging shows systematically the worst performance pointing at the importance of the poles and tropics in reconstructing the global ocean. © 2016, Springer-Verlag Berlin Heidelberg. 资助项目: MINECO, Ministerio de Economía y Competitividad
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53422
Appears in Collections: 过去全球变化的重建
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作者单位: Nansen Environmental and Remote Sensing Center (NERSC), Bergen, Norway; Institut Català de Ciències del Clima (IC3), Barcelona, Spain; Centre National de Recherches Météorologiques/Groupe d’Etude de l’Atmosphére Météorologique, UMR3589, Toulouse, France; Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain; University of Reading, Reading, United Kingdom
Recommended Citation:
Carrassi A.,Guemas V.,Doblas-Reyes F.J.,et al. Sources of skill in near-term climate prediction: generating initial conditions[J]. Climate Dynamics,2016-01-01,47(12)