| 多普勒雷达资料四维变分同化 |
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| 引用本文： | 杨艳蓉,李柏,张沛源.多普勒雷达资料四维变分同化[J].应用气象学报,2004,15(1):95-110. |
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| 作者姓名： | 杨艳蓉 李柏 张沛源 |
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| 作者单位： | 中国气象科学研究院, 北京 100081 |
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| 基金项目： | 国家自然科学基金 40 3 75 0 0 6面上项目资助 |
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| 摘 要： | 文章从理论上分析了多普勒雷达资料的四维同化。阐述多普勒雷达资料四维同化的主要过程及其基本思路。着重论述多普勒雷达资料四维变分分析系统(4D-VDRAS)的原理和方法，以及价值函数，共轭方程、伴随方程和多普勒雷达数据处理、Barnes插值技术和4D-VDRAS的应用。
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| 关 键 词： | 多普勒雷达 价值函数 四维变分同化 |
| 收稿时间： | 2002-12-24 |
DOPPLER RADAR DATA'S FOUR DIMENSIONAL VARIATIONAL ASSIMILATION |
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| Yang Yanrong,Li Bai,Zhang Peiyuan.DOPPLER RADAR DATA''''S FOUR DIMENSIONAL VARIATIONAL ASSIMILATION[J].Quarterly Journal of Applied Meteorology,2004,15(1):95-110. |
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| Authors: | Yang Yanrong Li Bai Zhang Peiyuan |
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| Institution: | Chinese Academy of Meteorological Sciences , Beijing 100081 , China |
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| Abstract: | The four-dimensional variational assimilation of Doppler-radar data (4DVAR) in theory was analyzed. Its main course and basic ideas were discussed. Then the four-dimensional variational Dopple radar analysis system (4D-VDRAS) was emphasized, the cost function was defined, and conjugate formulate and simple adjoint were applied to educe its minimum. In addition, radar data disposing and Barnes insert technique were introduced. The application of 4D-VDRAS was discussed. |
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| Keywords: | Doppler radar Cost function 4D-VDRAS |
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