Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-017-3809-4 |
On the link between mean state biases and prediction skill in the tropics: an atmospheric perspective | |
Richter, Ingo1; Doi, Takeshi1; Behera, Swadhin K.1; Keenlyside, Noel2 | |
2018-05-01 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 50页码:3355-3374 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; Norway |
英文摘要 | The present study examines how mean state biases in sea-surface temperature (SST), surface wind and precipitation affect model skill in reproducing surface wind and precipitation anomalies in the tropics. This is done using theoretical arguments, atmosphere-only experiments in the Coupled Model Intercomparison Project Phase 5, and customized sensitivity tests with the SINTEX-F general circulation model. Theoretical arguments suggest that under certain conditions the root mean square error (RMSE) of a variable can be related to its variance and its mean, which indicates a direct link between bias and skill. The anomaly correlation coefficient (ACC), on the other hand, is generally not related to either the mean state or its variance, as several examples document. Multi-model atmosphere-only experiments with prescribed SST warming suggest that both ACC and RMSE of surface wind and precipitation are rather insensitive to warming on the order of 4 K. When SST biases from a free-running control simulation are prescribed in SINTEX-F, the ACC of surface wind is almost unaffected in the equatorial Pacific and Atlantic, while that of precipitation decreases noticeably in some regions but also increases in others. The RMSE of both fields shows widespread deterioration. There is a tendency for warm SST biases to increase the signal-to-noise ratio and sometimes ACC as well. The results suggest that, in the context of atmosphere-only simulations, improving SST and precipitation biases does not necessarily improve the skill in reproducing anomalies of surface wind and precipitation. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000429650700013 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; GENERAL-CIRCULATION MODELS ; NINO SOUTHERN-OSCILLATION ; EL-NINO ; ATLANTIC VARIABILITY ; MULTIMODEL ENSEMBLE ; SEASONAL PREDICTION ; EQUATORIAL PACIFIC ; COUPLED OCEAN ; CLIMATE MODEL |
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/36166 |
专题 | 气候变化 |
作者单位 | 1.JAMSTEC, Applicat Lab, Kanazawa Ku, 3173-25 Showa Machi, Yokohama, Kanagawa 2360001, Japan; 2.Univ Bergen, Bergen, Norway |
推荐引用方式 GB/T 7714 | Richter, Ingo,Doi, Takeshi,Behera, Swadhin K.,et al. On the link between mean state biases and prediction skill in the tropics: an atmospheric perspective[J]. CLIMATE DYNAMICS,2018,50:3355-3374. |
APA | Richter, Ingo,Doi, Takeshi,Behera, Swadhin K.,&Keenlyside, Noel.(2018).On the link between mean state biases and prediction skill in the tropics: an atmospheric perspective.CLIMATE DYNAMICS,50,3355-3374. |
MLA | Richter, Ingo,et al."On the link between mean state biases and prediction skill in the tropics: an atmospheric perspective".CLIMATE DYNAMICS 50(2018):3355-3374. |
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