Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL076075 |
The Crossover Time as an Evaluation of Ocean Models Against Persistence | |
Phillipson, L. M.; Toumi, R. | |
2018-01-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:1页码:250-257 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | A new ocean evaluation metric, the crossover time, is defined as the time it takes for a numerical model to equal the performance of persistence. As an example, the average crossover time calculated using the Lagrangian separation distance (the distance between simulated trajectories and observed drifters) for the global MERCATOR ocean model analysis is found to be about 6 days. Conversely, the model forecast has an average crossover time longer than 6 days, suggesting limited skill in Lagrangian predictability by the current generation of global ocean models. The crossover time of the velocity error is less than 3 days, which is similar to the average decorrelation time of the observed drifters. The crossover time is a useful measure to quantify future ocean model improvements. |
英文关键词 | model evaluation persistence ocean currents |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423431800029 |
WOS关键词 | PARTICLE TRAJECTORIES ; ADRIATIC SEA ; PREDICTABILITY ; PREDICTION ; STATISTICS ; FORECASTS ; ALTIMETRY ; PRODUCTS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/25772 |
专题 | 气候变化 |
作者单位 | Imperial Collage London, Dept Phys, Space & Atmospher Phys Grp, London, England |
推荐引用方式 GB/T 7714 | Phillipson, L. M.,Toumi, R.. The Crossover Time as an Evaluation of Ocean Models Against Persistence[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(1):250-257. |
APA | Phillipson, L. M.,&Toumi, R..(2018).The Crossover Time as an Evaluation of Ocean Models Against Persistence.GEOPHYSICAL RESEARCH LETTERS,45(1),250-257. |
MLA | Phillipson, L. M.,et al."The Crossover Time as an Evaluation of Ocean Models Against Persistence".GEOPHYSICAL RESEARCH LETTERS 45.1(2018):250-257. |
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