Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-018-4197-0 |
Respective roles of remote and local wind stress forcings in the development of warm SST errors in the South-Eastern Tropical Atlantic in a coupled high-resolution model | |
Goubanova, Katerina1,2; Sanchez-Gomez, Emilia1; Frauen, Claudia3,4; Voldoire, Aurore3 | |
2019-02-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 52页码:1359-1382 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Chile; Germany |
英文摘要 | Processes involved in the development of the warm sea surface temperature (SST) bias in the Tropical South-Eastern Atlantic (SETA) in a high resolution (HR) version of the CNRM-CM model are evaluated based on full-field initialized seasonal hindcasts starting at 1 February of each year for 2000-2009. Whereas the initial SST growth is likely associated with local atmospheric forcing, its further development is due to remote oceanic processes. A mixed layer heat budget analysis in SETA indicates a spurious warm horizontal advection observed as far as south of 25 degrees S that appears at the beginning of March. It is associated with an erroneous oceanic mean state at the equator resulting from the mean equatorial westerly wind bias. A sensitivity experiment with corrected wind stress over the equatorial region suggests that the remote forcing explains about 57% of the SETA SST bias in March-May. Comparison with a lower resolution (LR) version of the model reveals that in general similar processes are responsible for the SST bias in both models. A strong reduction of the bias in the HR model is observed only over the near-coastal Southern Benguela region due to a better representation of atmospheric and oceanic processes controlling the coastal upwelling. Overall, the results of the inter-comparison of the SETA SST bias evolution in different sensitivity experiments performed in this study can be interpreted in terms of the relative contributions of (erroneous) warm horizontal advection, associated with equatorial forcing, and cold horizontal advection, associated with local offshore Ekman transport. |
英文关键词 | General circulation models Model systematic biases Atmosphere-Ocean coupling Tropical Atlantic Seasonal prediction Benguela upwelling system |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000460902200004 |
WOS关键词 | MIXED-LAYER HEAT ; SEA-ICE ; BIASES ; PARAMETERIZATION ; VARIABILITY ; CIRCULATION ; SENSITIVITY ; EVOLUTION ; SALINITY ; IMPACT |
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/35925 |
专题 | 气候变化 |
作者单位 | 1.CNRS, CERFACS, CECI, Toulouse, France; 2.CEAZA, La Serena, Chile; 3.CNRS, Meteo France, CNRM, UMR 3589, Toulouse, France; 4.Leibniz Inst Balt Sea Res Warnemunde, Rostock, Germany |
推荐引用方式 GB/T 7714 | Goubanova, Katerina,Sanchez-Gomez, Emilia,Frauen, Claudia,et al. Respective roles of remote and local wind stress forcings in the development of warm SST errors in the South-Eastern Tropical Atlantic in a coupled high-resolution model[J]. CLIMATE DYNAMICS,2019,52:1359-1382. |
APA | Goubanova, Katerina,Sanchez-Gomez, Emilia,Frauen, Claudia,&Voldoire, Aurore.(2019).Respective roles of remote and local wind stress forcings in the development of warm SST errors in the South-Eastern Tropical Atlantic in a coupled high-resolution model.CLIMATE DYNAMICS,52,1359-1382. |
MLA | Goubanova, Katerina,et al."Respective roles of remote and local wind stress forcings in the development of warm SST errors in the South-Eastern Tropical Atlantic in a coupled high-resolution model".CLIMATE DYNAMICS 52(2019):1359-1382. |
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