| 豫北旱区一次转折性降雪天气过程分析 |
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| 引用本文： | 王建新,张启绍,赵学东,张玉峰,黄先成.豫北旱区一次转折性降雪天气过程分析[J].河南科学,2012,30(8):1137-1141. |
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| 作者姓名： | 王建新 张启绍 赵学东 张玉峰 黄先成 |
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| 作者单位： | 安阳市气象局,河南安阳,455000 |
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| 摘 要： | 利用欧洲中心再分析资料、NCEP再分析资料、常规观测资料和加密观测资料,对2011年2月9—10日豫北初雪过程进行分析,结果显示:导致华北大部、黄淮等地降水偏少,发生气象干旱的主要原因是北方冷空气势力强而南方水汽输送条件差;该次降雪过程是受高空短波槽和地面倒槽共同影响所致.
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| 关 键 词： | 初雪 地面倒槽 干旱 水汽通量散度 |
Analysis of a Turning Point Snowfall in Arid Regions of North Henan |
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| Wang Jianxin
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Zhang Qishao
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Zhao Xuedong
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Zhang Yufeng
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Huang Xiancheng.Analysis of a Turning Point Snowfall in Arid Regions of North Henan[J].Henan Science,2012,30(8):1137-1141. |
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| Authors: | Wang Jianxin Zhang Qishao Zhao Xuedong Zhang Yufeng Huang Xiancheng |
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| Institution: | (Anyang Meteorological Bureau, Anyang 455000, Henan China) |
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| Abstract: | By using European Centre reanalysis data, NCEP reanalysis data,the conventional observation data and observation data, the first snow during February 9---10 in the northern of Henan is analyzed. The results show that less rainfall and meteorological drought in most of North China and most of the area between Huaihe River and the Yellow River, was mainly due to the strong forces of the cold air in the north and the difference of the water vapor transport in the south. The snowfall was caused by the high altitude shortwave trough and the surface trough. |
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| Keywords: | the first snow surface inverted trough drought water vapor flux divergence |
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