| 干侵入的研究及其应用进展 |
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| 引用本文： | 于玉斌,姚秀萍.干侵入的研究及其应用进展[J].气象学报,2003,61(6):769-778. |
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| 作者姓名： | 于玉斌 姚秀萍 |
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| 作者单位： | 1. 南京气象学院,南京,210044;中国气象科学研究院,北京,100081;中国气象局培训中心,北京,100081
2. 中国科学院大气物理研究所,LASG,北京,100029;中国气象局培训中心,北京,100081 |
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| 基金项目： | 自然科学基金项目 40 2 0 5 0 0 8和 40 13 5 0 2 0 1 |
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| 摘 要： | 全面综述了国外近年来干侵入 (dryintrusion)研究的进展和有关结果 ,概括总结了干侵入的基本理论、结构特征、在天气和次天气系统发展中的作用及其数值模拟结果 ;干侵入研究中有待于继续进行和深入的研究方向。明确了干侵入是源于对流层高层下沉至低层的高位涡低湿空气 ,它在气旋的爆发性发展、暴雨的增幅、位势不稳定的增强、中气旋的产生发展等方面起着重要的促进作用 ,同时 ,它能够影响冷锋的演变及其降水特征。因此 ,对干侵入及其机制的进一步研究具有较大的理论价值和实际天气预报意义。
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| 关 键 词： | 干侵入 综述 特征 作用 |
| 收稿时间： | 2002/10/15 0:00:00 |
| 修稿时间： | 2002年10月15 |
REVIEWS ON THE DRY INTRUSION AND ITS APPLICATION |
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| Yu Yubin and Yao Xiuping.REVIEWS ON THE DRY INTRUSION AND ITS APPLICATION[J].Acta Meteorologica Sinica,2003,61(6):769-778. |
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| Authors: | Yu Yubin and Yao Xiuping |
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| Institution: | Nanjing Institute of Meteorology, Nanjing 210044;Chinese Academy of Meteorological Science, Beijing 100081;China Meteorological Administration Training Center, Beijing 100081;LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029Chinese Academy of Meteorological Science, Beijing 100081 |
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| Abstract: | The foreign research advances of the dry intrusion in recent years are reviewed in this paper.It is summarized the basic theory on strucure and behavior of the dry intrusion,the relationship bet ween the dry intrusion and the development of weather syst ems and its numerical simulation.It is also provided probably the further research aspects of the dry intrusion in the future.It is clear that the dry intrusion with high potential voricity and low huminity decendes from near tropopause-level of ten has a clear signature in satellite imagery,especially in the water vapour (WV) channel,where it is seen as a darkzone.The dry intrusion may be conducive to the rapid development of cyclones,the amplification of heavy rainfalls,the enhancement of potential instability.The dry intrusion is associated with generation of potential inst ability and its eventual release as showers or thunderst orms.Identification of dry intrusions provides forecasters with additional nowcasting evidence that is especially helpful when issuing severe weather warnings.The dry intrusion may be responsible for the evolution of cold fronts and their rainfalls charact eristics.The identif ication of dry intrusions from WV imagery is useful in helping forecasters understand what is happening on mesoscale and to ant icipate what may happen on the period of a nowcast and it can be used to validate and bogus a NWP model.Therefore,the further research on the dry intrusion and its mechanism can provide instuction to weather forecast both theoretically and practically. |
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| Keywords: | Dry intrusion Review Feature Role |
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