A research on the optimal approach of CFSR surface flux data correction based on different surface forcing modes

Li Ang; Zhang Miaoyin; Zhu Xueming; Zu Ziqing; Wang Hui

doi:10.3969/j.issn.0253-4193.2019.11.006

Volume 41 Issue 11

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Li Ang，Zhang Miaoyin，Zhu Xueming, et al. A research on the optimal approach of CFSR surface flux data correction based on different surface forcing modes[J]. Haiyang Xuebao，2019, 41(11)：51–63，doi:10.3969/j.issn.0253−4193.2019.11.006

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A research on the optimal approach of CFSR surface flux data correction based on different surface forcing modes

doi: 10.3969/j.issn.0253-4193.2019.11.006

Key Laboratory of Research on Marine Hazards Forecasting, State Oceanic Administration, National Marine Environmental Forecasting Center, Beijing 100081, China

Received Date: 2018-09-04
Rev Recd Date: 2018-12-24

Available Online: 2021-04-21

Publish Date: 2019-11-25

Abstract

Abstract

Sea surface temperature (SST) is an important expression of air-sea interaction, and accurate simulation of SST is also the foundation of ocean internal temperature prediction. This paper attempts to diagnose the contribution of radiation fields on SST simulation by comparing the results of SST driven by two different surface forcing modes employing the Regional Ocean Model System (ROMS). According to the EOF analysis method, a correction scheme on CFSR surface atmospheric forcing radiation data is proposed, and therefrom, a high frequency revised dataset of CFSR radiation flux is obtained. The comparison tests show that surface forcing derived from the COARE 3.0 formula mode improves simulating performance of SST, as the RMSE decreases by 39% comparing to direct forcing mode. Comparing the thermal radiation fields of the two forcing modes, it is found that latent radiation is the main reason for different performances of SST simulation, and following by the effect of sensible heat radiation difference. Correction of both two radiation fields could improve the SST simulation results significantly; and correction of longwave radiation shows a more significant effect in winter which is still weaker than that of correction of latent radiation. In comprehensive, the accurate dataset of surface forcing field is more effective than change the choice of forcing mode.
- sea surface temperature,
- CFSR,
- surface atmospheric forcing,
- heat flux correction

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References(29)

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