DOI: 10.1007/s00382-016-3049-z
Scopus记录号: 2-s2.0-84959331325
论文题名: Obtaining the correct sea surface temperature: bias correction of regional climate model data for the Mediterranean Sea
作者: Macias D. ; Garcia-Gorriz E. ; Dosio A. ; Stips A. ; Keuler K.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期: 3 起始页码: 1095
结束页码: 1117
语种: 英语
英文关键词: Bias correction
; Mediterranean Sea
; Ocean modelling
; Sea surface temperature
Scopus关键词: air-sea interaction
; climate modeling
; correction
; regional climate
; satellite data
; sea surface temperature
; stratification
; wind velocity
; Mediterranean Sea
英文摘要: Here, the COSMO Climate Limited-area Modelling (CCLM) regional climate model (RCM) is used as external forcing for a Mediterranean basin-scale ocean model based on the general estuarine transport model (GETM). CCLM is forced by different global climate models (GCMs) (MPI and EcEarth) and by the ERA-interim (ERAin) reanalysis. Sea surface temperatures (SST) simulated by the different runs of the ocean model are compared with satellite measurements. As a substantial cold bias in simulated SST is found, a simple bias-correction methodology is applied to the RCM atmospheric variables, namely (1) air temperature (which is usually underestimated for the region by RCMs runs), (2) cloud cover (typically overestimated) and (3) wind intensity (as zonal wind intensity is usually overestimated). The performed analysis identifies wind velocity as the most important variable to correct in order to satisfactorily obtain Mediterranean SST. For many of the RCM realizations significant improvement in the simulated SST are only achieved when wind intensity values were bias-corrected towards observed values. Air temperature and cloud cover had a more marginal importance in reducing the SST bias observed in RCM-forced runs of the ocean model. By comparing the ERAin-driven run and the GCMs driven runs, our analyses suggest that the main source of observed bias is related with the GCMs being used as lateral boundary condition for the RCM realizations. However, a relative simple bias-correction methodology is sufficient to reduce a large part of the induced bias in SST and to improve the vertical water stratification characteristics within the Mediterranean basin that will allow to analyze current and future biogeochemical conditions of the studied basin. © 2016, The Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109166
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: European Commission, Joint Research Centre, Institute for Environment and Sustainability, Ispra, 21027, Italy; Brandenburg University of Technology (BTU), Chair of Environmental Meteorology, Burger Chaussee 2, Haus 4/3, Cottbus, D-03044, Germany
Recommended Citation:
Macias D.,Garcia-Gorriz E.,Dosio A.,et al. Obtaining the correct sea surface temperature: bias correction of regional climate model data for the Mediterranean Sea[J]. Climate Dynamics,2018-01-01,51(3)