| WANG Gang,LIN Min. 2014. A comparison of the CMIP5 models on the historical simulation of the upper ocean heat content in the South China Sea. Acta Oceanologica Sinica, 33(11):75－84 |
| A comparison of the CMIP5 models on the historical simulation of the upper ocean heat content in the South China Sea |
| CMPI5多模式对南海上层海洋热含量的模拟比较 |
| Received:September 11, 2013 Revised:April 02, 2014 |
| DOI：10.1007/s13131-014-0557-8 |
| Key words:South China Sea ocean heat content Coupled Model Intercomparison Project phase 5 |
| 中文关键词: 南海 海洋热含量 耦合模式比较计划第五阶段 |
| 基金项目: |
| Author Name | Affiliation | E-mail | | WANG Gang | Key Laboratory of Marine Science and Numerical Modeling (MASNUM), the First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Key Laboratory of Data Analysis and Applications, the First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China | wangg@fio.org.cn | | LIN Min | Department of Mathematics, Ocean University of China, Qingdao 266100, China | |
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| Abstract: |
| Seventeen models participating in the Coupled Model Intercomparison Project phase 5 (CMIP5) activity are compared on their historical simulation of the South China Sea (SCS) ocean heat content (OHC) in the upper 300 m. Ishii's temperature data, based on the World Ocean Database 2005 (WOD05) and World Ocean Atlas 2005 (WOA05), is used to assess the model performance by comparing the spatial patterns of seasonal OHC anomaly (OHCa) climatology, OHC climatology, monthly OHCa climatology, and interannual variability of OHCa. The spatial patterns in Ishii's data set show that the seasonal SCS OHCa climatology, both in winter and summer, is strongly affected by the wind stress and the current circulations in the SCS and its neighboring areas. However, the CMIP5 models present rather different spatial patterns and only a few models properly capture the dominant features in Ishii's pattern. Among them, GFDL-ESM2G is of the best performance. The SCS OHC climatology in the upper 300 m varies greatly in different models. Most of them are much greater than those calculated from Ishii's data. However, the monthly OHCa climatology in each of the 17 CMIP5 models yields similar variation and magnitude as that in Ishii's. As for the interannual variability, the standard deviations of the OHCa time series in most of the models are somewhat larger than those in Ishii's. The correlation between the interannual time series of Ishii's OHCa and that from each of the 17 models is not satisfactory. Among them, BCC-CSM1.1 has the highest correlation to Ishii's, with a coefficient of about 0.6. |
| 中文摘要: |
| 本文比较了参加耦合模式比较计划第五阶段(CMPI5)的17个模式对于南海上300 m层海洋热含量的历史模拟。以Ishii等基于WOD05和WOA05构建的温度数据作为参考, 我们比较了17个模式给出的南海季节内热含量异常的空间分布、气候态热含量、逐月气候态热含量异常以及热含量异常的年际变化。Ishii数据显示, 南海季节内热含量异常冬季和夏季的空间分布都受到风应力和南海及周边海域环流的显著影响；而CMIP5各模式给出的结果差异较大, 且只有少数模式能够得到Ishii数据给出的主要空间分布特征。其中, GFDL-ESM2G的模拟结果最佳。各模式中的南海气候态热含量也有很大差异, 大多数模式的计算结果都远高于Ishii给出的结果；然而, 这些模式中的逐月热含量异常与Ishii结果的变化及振幅都比较接近。至于年际变化, 大多数模式中的热含量异常时间序列的标准偏差都大于Ishii数据, 且与Ishii时间序列的相关性也普遍不高。其中, 与Ishii的相关性最好的是BCC-CSM1.1, 相关系数达到0.6. |
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