| 有限区域卫星云图资料变分分析的试验研究 |
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| 引用本文： | 沈桐立,温市耕.有限区域卫星云图资料变分分析的试验研究[J].高原气象,1996,15(1):58-67. |
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| 作者姓名： | 沈桐立 温市耕 |
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| 作者单位： | 南京气象学院，内蒙古气象台 |
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| 基金项目： | 国家“八五”攻关项目,国家自然科学基金 |
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| 摘 要： | 资料分析在数值预报中的重要性受到越来越多的关注，星目前常规探测网的时空局限性，利用分辨率较高的非常规资料势在必行。该文利用一个有限区域中尺度模式ＭＭ４，采用变分分析技术对有限区域的常规探空资料和非常规云图资料进行变分分析和数值模拟。
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| 关 键 词： | 卫星云图 中尺度模式 变分分析 有限区域 |
EXPERIMENT AND DESIGN OF THE VARIATIONAL ANALYSIS SYSTEM FOR THE SATELLITE CLOUD PICTURE DATA IN THE LIMITED AREA |
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| Shen Tongli,Min Jinzhong,Wu Chengou,Wen Shigeng.EXPERIMENT AND DESIGN OF THE VARIATIONAL ANALYSIS SYSTEM FOR THE SATELLITE CLOUD PICTURE DATA IN THE LIMITED AREA[J].Plateau Meteorology,1996,15(1):58-67. |
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| Authors: | Shen Tongli Min Jinzhong Wu Chengou Wen Shigeng |
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| Institution: | Shen Tongli 1 Min Jinzhong 1 Wu Chengou 1 Wen Shigeng 2 |
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| Abstract: | Nowadays,greater attention has been drawn to the importance of data assimilation in numerical prediction. It is necessary to use the nonconventional data that has a high resolution due to the time-space limit of the conventional sounding system. In the paper,in terms of the variational analysis technique,variational analysis and numerical experiment have been done on the conventional sounding data and nonconventional cloud picture data in the limited area,with the mesoscale model MM4. Results show that the technique can efficiently analyse the conventional and nonconventional data. Case experiments in the temperature and moisture fields have been well made. Results of the mesoscale numerical simulation indicate that the variational analysis of the moisture field can improve the prediction of rainfall,but has no obvious improvement in rain area prediction while the variational analysis of the temperature field can apparently improve prediction of the rain area. If the both two fields are analysed at the same time,better results will be obtained. The research in this paper will provide a new efficient method for accurate rainfall prediction at the weather stations throughout the country. |
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| Keywords: | Variational analysis Satellite cloud picture Mesoscale model |
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