论文题目 | Performance of CMIP6 models in simulating the dynamic sea level: Mean and interannual variance |
论文题目(英文) | Performance of CMIP6 models in simulating the dynamic sea level: Mean and interannual variance |
作者 | Chen, Hongying(1,5,7);He, Zhuoqi(1,2,3,4,6);Xie, Qiang(1,5);Zhuang, Wei(6) |
发表年度 | 2023-01 |
卷 | 16 |
期 | 1 |
页码 | 1 |
期刊名称 | ATMOSPHERIC AND OCEANIC SCIENCE LETTERS |
摘要 | |
摘要_英文 | Observational data from satellite altimetry were used to quantify the performance of CMIP6 models in simulating the climatological mean and interannual variance of the dynamic sea level (DSL) over 40 degrees S-40 degrees N. In terms of the mean state, the models generally agree well with observations, and high consistency is apparent across different models. The largest bias and model discrepancy is located in the subtropical North Atlantic. As for simulation of the interannual variance, good agreement can be seen across different models, yet the models present a relatively low agreement with observations. The simulations show much weaker variance than observed, and bias is ap-parent over the subtropics in association with strong western boundary currents. This nearshore bias is reduced considerably in HighResMIP models. The underestimation of DSL interannual variance is at least partially due to the misrepresentation of ocean processes in the CMIP6 historical simulation with its relatively low resolution. The results identify directions for future model development towards a better understanding of the mean and interannual variability of DSL. |
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