| Weather and Climate |
|
|
|
|
| Rainfall Variation during 1991—2010 in Urumqi |
| WANG Shi-jie1,2, YANG Lian-mei2, SHI Yu-guang3 |
1.College of Geographical Science and Tourism, Xinjiang Normal University, Urumqi 830054, China;
2.Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China;
3.Shandong Meteorology Bureau, Jinan 250031, China |
|
|
|
|
Abstract Based on hourly precipitation data from May to September during 1991—2010 from Urumqi meteorological station, the features of rainfall change during recent 20 years were analyzed. Results showed that the diurnal variations of hourly precipitation and rainfall frequency were consistent. The peaks of hourly rainfall and rainfall frequency both occurred from 20:00 to 11:00, and the minimum value occurred at 16:00. The frequency of rainfall less than or equal to 1.0 mm·h-1 was the most, which was followed by the frequency of rainfall great than or equal to 1.1 mm·h-1 but less than or equal to 3.0 mm·h-1. Nevertheless, the contribution of the latter was the biggest to precipitation. Different magnitudes of precipitation intensity had some different yearly change. The frequency of light rain was the most, the second were moderate rain and heavy rain, and the least was torrential rain. In a day, light rain, moderate rain and heavy rain occurred with the most frequency at the first half of the night, torrential rain at afternoon. During a year, light rain occurred with the most frequency in the middle of July, moderate rain in the middle of May, heavy rain in mid-to-late May, and torrential rain in early and middle of May, middle of July, and late August. The peaks of rainfall events with duration of 1-3 hours occurred at the first half of the night, that with duration of 4-6 hours and 7-9 hours often appeared at night, and that with 10-12 hours duration often appeared in the afternoon and after midnight. The inter-annual change of total rain days is these 20 years in Urumqi was not significant. Compare to during 1991-2000, the torrential rain days increased during 2001-2010, while the days of the other magnitudes decreased.
|
|
Received: 30 June 2011
Published: 20 March 2012
|
|
|
| [1]章文波,刘宝元.北方农牧交错带降水极值变化空间特征[J].自然资源学报,2003,18(3):274-280.[2]何立富,陈涛,谌芸,等.大气探测资料在中尺度暴雨中的分析和应用[J].应用气象学报,2006,17(增刊):88-97.[3]郭化文,魏甡生,陈建昌.应用特征系数法求算长时段最大概率降雨强度[J].气象,1997,23(4):9-12.[4]汪青春,李林,刘蓓.青海省近40年雨日、雨强气候变化特征[J].气象,2005,31(3):69-72.[5]姚莉,赵声蓉,赵翠光,等.中国中东部逐时雨强时空分布及重现期的估算[J].地理学报,2010,65(3):293-300.[6]姜逢清,朱诚,胡汝骥.1960-1997年新疆北部降水序列趋势探测[J].地理科学,2002,21(6):669-672.[7]薛燕,韩萍,冯国华.半个世纪以来新疆降水和气温的变化趋势[J].干旱区研究,2003,20(2):127-130.[8]施雅风,沈永平,李栋梁,等.中国西北气候由暖干向暖湿转型的特征和趋势探讨[J].第四纪研究,2003,23(2):152-164.[9]何清,杨青,李红军.新疆40 a来气温、降水和沙尘天气的变化[J].冰川冻土,2003,25(4):423-427.[10]杨莲梅.新疆极端降水的气候变化[J].地理学报,2003,58(4):577-583.[11]南庆红,杨舵,杨青.应用EOF方法分析新疆降水变化特征[J].中国沙漠,2003,23(5):554-559.[12]黄玉霞,李栋梁,王宝鉴,等.西北地区近40年年降水异常的时空特征分析[J].高原气象,2004,23(2):245-252.[13]秦爱民,钱维宏.近41年中国不同季节降水气候分区及趋势[J].高原气象,2006,25(3):495-502.[14]史玉光,孙照渤.新疆水汽输送的气候特征及其变化[J].高原气象,2008,27(2):310-319.[15]辛渝,陈洪武,张广兴,等.新疆年降水量的时空变化特征[J].高原气象,2008,27(5):993-1003.[16]张生军,王天明,王涛,等.新疆近50 a来降水量时空变化及其突变分析[J].中国沙漠,2010,30(3):668-674.[17]魏娜,巩远发,孙娴,等.西北地区近50 a降水变化及水汽输送特征[J].中国沙漠,2010,30(6):1450-1457.[18]姜逢清,李珍,杨跃辉.乌鲁木齐降水分布型及其40多年来的变化[J].干旱区研究,2006,23(1):83-88.[19]刘惠云,王晓梅,肖书君,等.乌鲁木齐市近40多年降水演变特征[J].干旱区研究,2007,24(6):785-789.[20]刘卫平,张帆,魏文寿,等.乌鲁木齐近30 a城市与郊区气候参数对比分析[J].中国沙漠,2010,30(3):681-685.[21]肖开提·多莱特.新疆降水量级标准的划分[J].新疆气象,2005,28(3):7-8.[22]张家宝,邓子凤.新疆降水概论[M].北京:气象出版社,1987:229-232. |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
2012, Vol. 32 
