| A dataset of global ocean surface currents for 1999-2007 derived from Argo float trajectories: Comparison with surface drifter and TAO measurements |
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| 作者姓名： | Xie Jiping Zhu Jiang |
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| 作者单位： | 中国科学院大气物理研究所,中国科学院大气物理研究所 |
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| 摘 要： | A dataset of surface current vectors with error estimate from 1999 to 2007 is derived from the trajectories of the Array for Real-time Geostrophic Oceanography （Argo） drifting on surface over the global ocean. The error of the estimated surface currents is about 4.7 cm s-1 which is equivalent to the accuracy of the currents determined from the surface drifters. Geographically, the Argo-derived surface currents can fill many gaps left by the Global Drifter Program due to the greater number of floats, and can provide a complementary in situ observational system for monitoring global ocean surface currents. The surface currents from the Argo floats are compared with the surface drifter-derived currents and the Tropical Atmosphere Ocean program （TAO） measurements. The comparisons show good agreement for both the current amplitude and the direction of surface currents. Results indicate the feasibility of obtaining ocean surface currents from the Argo array and of combining the surface currents from Argo and the ocean surface drifters for in situ mapping of the global surface currents. The authors also make the dataset available to users of interest for many types of applications.
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| 关 键 词： | Argo浮标 DataSet 表面电流 全球海洋 测量 浮法 误差估计 电流矢量 |
A dataset of global ocean surface currents for 1999-2007 derived from Argo float trajectories: Comparison with surface drifter and TAO measurements |
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| Xie Jiping,Zhu Jiang.A dataset of global ocean surface currents for 1999-2007 derived from Argo float trajectories: Comparison with surface drifter and TAO measurements[J].Atmospheric and Oceanic Science Letters,2009,2(2):97-102. |
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| Authors: | Xie Jiping and Zhu Jiang |
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| Institution: | ICCES, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China,LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | A dataset of surface current vectors with error estimate from 1999 to 2007 is derived from the Argo float surface trajectories over the global ocean. The errors of the estimated surface currents are about 4.7 cm s-1 which is equivalent to the accuracy of the currents from the surface drifters. Geographically the Argo-derived surface currents can fill many gaps left by the Global Drifter Program due to the larger number of floats and provide a complementary in situ observational system to monitoring global ocean surface currents. The surface currents from the Argo floats are compared with the surface drifter-derived currents and the TAO measurements. The comparisons show good agreement both on the current amplitude and on the direction of surface currents. Results indicate the feasibility to obtain ocean surface currents from the Argo array and to combine the surface currents from Argo and the ocean surface drifters for in situ mapping of the global surface currents. We also made the dataset available to users of interest for many types of applications. |
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| Keywords: | Surface Currents Argo floats TAO Surface drifter |
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