| 亚印太交汇区的海洋再分析系统 |
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| 作者姓名： | YAN Chang-Xiang ZHU Jiang XIE Ji-Ping |
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| 作者单位： | YAN Chang-Xiang,XIE Ji-Ping(International Center for Climate and Environment Science,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China);ZHU Jiang(State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry LAPC,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China) |
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| 基金项目： | the Chinese Academy of Sciences，the 973 Program，the 863 Program，the National Natural Science Foundation of China |
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| 摘 要： | An ocean reanalysis system for the joining area of Asia and Indian-Pacific Ocean (AIPO) has been developed and is currently delivering reanalysis data sets for study on the air-sea interaction over AIPO and its climate variation over China in the inter-annual time scale.This system consists of a nested ocean model forced by atmospheric reanalysis,an ensemble-based multivariate ocean data assimilation system and various ocean observations.The following report describes the main components of the data assimilation system in detail.The system adopts an ensemble optimal interpolation scheme that uses a seasonal update from a free running model to estimate the background error covariance matrix.In view of the systematic biases in some observation systems,some treatments were performed on the observations before the assimilation.A coarse resolution reanalysis dataset from the system is preliminarily evaluated to demonstrate the performance of the system for the period 1992 to 2006 by comparing this dataset with other observations or reanalysis data.
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| 关 键 词： | reanalysis system data assimilation ensemble optimal interpolation background error covariance |
| 修稿时间： | 2/4/2010 12:00:00 AM |
An Ocean Reanalysis System for the Joining Area of Asia and Indian-Pacific Ocean |
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| YAN Chang-Xiang,ZHU Jiang,XIE Ji-Ping.An Ocean Reanalysis System for the Joining Area of Asia and Indian-Pacific Ocean[J].Atmospheric and Oceanic Science Letters,2010,3(2):81-86. |
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| Authors: | YAN Chang-Xiang ZHU Jiang and XIE Ji-Ping |
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| Institution: | International Center for Climate and Environment Science, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China,State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China,International Center for Climate and Environment Science, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | An ocean reanalysis system for the joining area of Asia and Indian-Pacific Ocean (AIPO) has been developed and is currently delivering reanalysis data sets for study on the air-sea interaction over AIPO and its climate variation over China in the inter-annual time scale. This system consists of a nested ocean model forced by atmospheric reanalysis, an ensemble-based multivariate ocean data assimilation system and various ocean observations. The following report describes the main components of the data assimilation system in detail. The system adopts an ensemble optimal interpolation scheme that uses a seasonal update from a free running model to estimate the background error covariance matrix. In view of the systematic biases in some observation systems, some treatments were performed on the observations before the assimilation. A coarse resolution reanalysis dataset from the system is preliminarily evaluated to demonstrate the performance of the system for the period 1992 to 2006 by comparing this dataset with other observations or reanalysis data. |
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| Keywords: | reanalysis system data assimilation ensemble optimal interpolation background error covariance |
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