新疆伊犁河谷夏季降水日变化特征

doi:10.7522/j.issn.1000-0240.2015.0040

冰川冻土 ›› 2015, Vol. 37 ›› Issue (2): 369-375.doi: 10.7522/j.issn.1000-0240.2015.0040

新疆伊犁河谷夏季降水日变化特征

黄秋霞¹, 赵勇^2,3, 何清^2,3

1. 新疆昌吉回族自治州气象局, 新疆昌吉 831100;
2. 中国气象局乌鲁木齐沙漠气象研究所, 新疆乌鲁木齐 830002;
3. 中国气象局树木年轮理化研究重点开放实验室, 新疆乌鲁木齐 830002

收稿日期:2014-10-02 修回日期:2015-02-01 出版日期:2015-04-25 发布日期:2015-06-06
通讯作者: 赵勇, E-mail: zhaoyong@idm.cn. E-mail:zhaoyong@idm.cn
作者简介:黄秋霞(1989-), 女, 新疆昌吉人, 2014年在新疆大学获硕士学位, 现主要从事气候与环境变化研究. E-mail: huangqiuxia0718@163.com
基金资助:
国家科技支撑计划项目(2012BAC23B01); 国家重点基础研究发展计划(973计划)项目(2010CB951001); 国家自然科学基金项目(41175086)资助

The daily variation characteristics of summer precipitation over the Yili River Valley, Xinjiang

HUANG Qiuxia¹, ZHAO Yong^2,3, HE Qing^2,3

1. Changji Meteorological Bureau, Changji 831100, Xinjiang, China;
2. Institute of Desert Meteorology, China Meteorological Administration, Ürümqi 830002, China;
3. Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Ürümqi 830002, China

Received:2014-10-02 Revised:2015-02-01 Online:2015-04-25 Published:2015-06-06

摘要/Abstract

摘要：

基于2007-2011年伊犁河谷4个气象站逐时降水资料, 分析了伊犁河谷夏季降水日变化特征. 结果表明: 降水量最大值出现在北京时间22:00, 最小值出现在13:00, 其中, 降水量高值区主要集中在21:00至次日08:00. 一天中最易发生降水的时间为23:00至次日10:00, 03:00是降水频数最多的时刻, 16:00则发生频数最少. 降水强度最高值出现在16:00, 最低值出现在13:00. 降水主要以短持续时间的降水为主, 持续1 h的次数最多, 持续2 h的降水量最多, 对总降水量的贡献也最大, 贡献率最小的为持续14 h的降水事件. 伊犁河谷夏季的降水主要发生在夜间, 且以短时间的降水为主.

关键词: 伊犁河谷, 夏季降水, 降水日变化, 降水频次, 降水强度

Abstract:

Based on the hourly precipitation data from four stations over the Yili River Valley during 2007-2011, the daily variation characteristics of summer precipitation were analyzed. The results showed that the maximum precipitation appears at 22:00 Beijing Time (BT), and the minimum precipitation appears at 13:00 (BT), mainly concentrating in between 21:00 and 08:00 (BT). The maximum precipitation frequency occurs in between 23:00 and 10:00 (BT), with the maximum value at 03:00 (BT) and the minimum value at 16:00 (BT). The maximum precipitation intensity generally appears at 16:00 (BT) and the minimum one occurs at 13:00 (BT). There is short-term precipitation frequently over the Yili River Valley, mostly with the time less than one hour. The precipitation events of 2-hour have most contribution to the total precipitation, and the precipitation events of 14-hour have least contribution to the total precipitation. The summer precipitation over the Yili River Valley mostly occurs at night, with short-term precipitation events frequently.

Key words: Yili River Valley, summer precipitation, daily variation of precipitation, precipitation frequency, precipitation intensity

中图分类号:

P426.61

黄秋霞, 赵勇, 何清. 新疆伊犁河谷夏季降水日变化特征[J]. 冰川冻土, 2015, 37(2): 369-375.

HUANG Qiuxia, ZHAO Yong, HE Qing. The daily variation characteristics of summer precipitation over the Yili River Valley, Xinjiang[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2015, 37(2): 369-375.

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新疆伊犁河谷夏季降水日变化特征

The daily variation characteristics of summer precipitation over the Yili River Valley, Xinjiang

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