| 北疆冬季降水的中小尺度结构与人工增水作业潜力和自然条件探讨 |
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| 引用本文： | 刘玉宝,游来光.北疆冬季降水的中小尺度结构与人工增水作业潜力和自然条件探讨[J].应用气象学报,1990,1(2):113-122. |
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| 作者姓名： | 刘玉宝 游来光 |
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| 作者单位： | 1.国家气象局气象科学研究院
(刘玉宝)，国家气象局气象科学研究院(游来光) |
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| 摘 要： | 本文分析了1984年冬季北疆4次降水过程（11月21日、11月28日、12月1日、12月9日）的雷达观测资料、加密探空和包括1983年几次过程的飞机穿云观测、地面雪强和雪晶微物理观测以及常规观测资料等。结果表明，该区气旋锋面降水过程由频繁有秩的中小尺度降水带构成。依据观测可将它们分为两类:地形降水带和系统降水带。本文还初步研究了降水结构和降水带的生成机制，并进一步探讨了降水带的可播性。从各种降水带微结构特点和地面降水特征得知，该区冬季人工增雪催化对象主要是无高空强引晶作用的锋下层积云和浅对流、波动、爬坡等动力作用产生的降水带。
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The Meso– and Small–Scale Structure and Potential for Cloud Seeding of Wintertime Snowfall in the Zhungeer Basin |
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| Affiliation: | (Academy of Meteorology Science, SMA) |
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| Abstract: | In this paper, the radar echoes, intensive soundings, microphysical observations both on ground and in clouds of four precipitation processes in winter of 1984 and the data obtained from aircraft reports in several processes in 1983 are analysed. It is shown that the meso– and small–scale systems play a great role in the precipitation processes. Snowband radar echoes can be divided into two kinds, orographic snowband and systematic snowband. The structure, evolution characteristics, formation mechanisms and the potential for artificial seeding of various types of snowbands in the Zhungeer Basin are also discussed. It is indicated that the snowbands which are produced from dynamical action such as shallow convection, waves and orographic lifting are favorable to be seeded, and that stratocumulus without disturbance or with weak natural seeding of cirri aloft is also suitable for seeding. |
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