库尔勒市主汛期降水日变化特征分析
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摘要
利用库尔勒市2010—2016年主汛期(5—8月)逐时自动降水资料,得出主汛期共出现降水371次,累计降水量393.5 mm,进而分析了库尔勒市主汛期降水日变化特征,结果表明:降水日峰值在17:00,次峰值区在08:00—12:00,最低值出现在21:00;一天中降水频次最高的时刻为10:00,最低时刻在17:00和20:00。降水强度高值区出现在16:00—17:00,最低值出现在21:00和07:00。≥0.1 mm、≥1 mm、≥3 mm降水出现频次整体均呈现先上升后下降的趋势,分别在10:00、08:00和10:00、09:00达到最大,其中,≥0.1mm降水出现频次最多、≥3 mm出现频次最少。定时时次≥8成低云量出现频次和定时时次累计降水量变化均表现为02:00—08:00呈上升趋势,到08:00达到最大,随后逐渐降低。
Based on the hourly rainfall data from automatic meteorological station of Korla in main flood season during 2010-2016,this paper analyzed the diurnal variation characteristics of precipitation. The results showed that there were 371 precipitations in the main flood season,with a cumulative precipitation of 393.5 mm. The daily precipitation peak appeared at 17:00,and it took second place at 08:00-12:00 with the minimum value occurrence at 21:00. The high value of rainfall frequency at 10:00,the lowest value at 17:00 and 20:00. High precipitation intensity area appeared from 16:00 to 17:00,and the lowest value appeared at 21:00 and 07:00. The frequency of precipitation(≥0.1 mm,≥1 mm,≥3 mm)increased first and then decreased,reaching the maximum at 10:00,08:00,10:00 and 09:00,respectively. Among them,the frequency of precipitation(≥ 0.1 mm)was the highest and the frequency of precipitation(≥3 mm) was the lowest. The frequency and cumulative precipitation change of low cloud amount with timing times(≥8%) and timing times showed an upward trend from 02:00 to 08:00,reaching the maximum at 08:00,and then decreasing gradually.
Based on the hourly rainfall data from automatic meteorological station of Korla in main flood season during 2010-2016,this paper analyzed the diurnal variation characteristics of precipitation. The results showed that there were 371 precipitations in the main flood season,with a cumulative precipitation of 393.5 mm. The daily precipitation peak appeared at 17:00,and it took second place at 08:00-12:00 with the minimum value occurrence at 21:00. The high value of rainfall frequency at 10:00,the lowest value at 17:00 and 20:00. High precipitation intensity area appeared from 16:00 to 17:00,and the lowest value appeared at 21:00 and 07:00. The frequency of precipitation(≥0.1 mm,≥1 mm,≥3 mm)increased first and then decreased,reaching the maximum at 10:00,08:00,10:00 and 09:00,respectively. Among them,the frequency of precipitation(≥ 0.1 mm)was the highest and the frequency of precipitation(≥3 mm) was the lowest. The frequency and cumulative precipitation change of low cloud amount with timing times(≥8%) and timing times showed an upward trend from 02:00 to 08:00,reaching the maximum at 08:00,and then decreasing gradually.
引文
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[25]周雪英,段均泽,李晓川.近52a巴音布鲁克山区日降水变化趋势与突变特征分析[J].沙漠与绿洲气象,2013,7(5):19-24.
[2]Ji Fei,Wu Zhaohua,Huang Jianping,et al.Evolution of land surface air temperature tren[J].Nature Climate Change,2014,4(6):462-466.
[3]Qin Dahe.Highlights of the IPCC Working Group I Fifth Assessment Report.Advances in Climate Change Research,2014,10(1):1-6.
[4]董思言,高学杰.2014.长期气候变化:IPCC第五次评估报告解读.气候变化研究进展,10(1):56-59.
[5]戴泽军,宇如聪,陈昊明.湖南夏季降水日变化[J].高原气象,2009,28(6):1463-1470.
[6]Zhao Yong,Huang Danqing,Zhu Jian,et al.The feature analysis of regional and persistent extreme precipitation events in northern Xinjiang region[J].Journal of Glaciology and Geocryology,2011,33(3):524-531.
[7]苏布达,王国杰,江通.西北地区45a来降水异常的时空变化及其标度特征[J].冰川冻土,2007,29(2):176-182.
[8]Sperber KR,Yasunari T.Workshop on Monsoon Climate Systems:Toward Better Prediction of the Monsoon[J].Bulletin of the American Meteorological Society,2006(87):1399-1403.
[9]Kincer JB.Daytime and nighttime precipitation and their economic significance[J].Monthly Weather Review,1916(44):628-633.
[10]Dai Aiguo.Global precipitation and thunderstorm frequencies.Part II:Diurnal variations[J].Journal of Climate,2001,14(6):1112-1128.
[11]Dai Aiguo,Giorgi F,Trenberth K E.Observed and modelsimulated diunal cycles of precipitation over the contiguous United States[J].Journal of Geophysical Research:Atmospheres,1999,104(D6):6377-6402.
[12]Yu Rucong,Zhou Tianjun,Xiong Anyuan,et al.Diurnal variations of summer precipitation over contiguous China[J].Geophysical Research Letters,2007,34,L01704,doi:10.1029/2006GL028129.
[13]杨森,周晓珊,高杰.辽宁省夏季降水的日变化特征[J].气象,2011,37(8):943-949.
[14]He Huizhong,Zhang Fuqing.Diurnal variation of warmseason precipitation over northern China[J].Monthly Weather Review,2010,138:1017-1025.
[15]Yu R C,Xu Y P,Zhou T J,et al.Relation between rainfall duration and diurnal variation in the warm season precipitation over central eastern China[J].Geophys Res Lett,2007,34:L13703.
[16]王夫常,宇如聪,陈昊明,等.我国西南部降水日变化特征分析[J].暴雨灾害,2011,30(2):117-121.
[17]吕炯.巴山夜雨[J].气象学报,1942(16):36-53.
[18]Sun Xian,Wei Na,Wang Shigong,et al.Study of the daily variation of summer precipitation in Xi'an[J].Journal of Glaciology and Geocryology,2013,35(5):1176-1182.
[19]朱小凡,张明军,王圣杰,等2008-2013年新疆夏季降水的日变化特征[J].生物学杂志,2016,35(2):478-488.
[20]赵勇,黄丹青,古丽格娜,等.新疆北部夏季强降水分析[J].干旱区研究,2010,27(5):773-779.
[21]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.
[22]黄秋霞,赵勇,何清,等.伊宁市主汛期降水日变化特征[J].干旱区研究,2015,32(4):742-747.
[23]黄秋霞,方雯,王春燕,等.新疆昌吉市主汛期降水的日变化特征[J].沙漠与绿洲气象,2016,10(6):19-23.
[24]赵克明,古丽格娜·海力力,美丽巴奴·艾则孜,等.喀什市降水的日变化特征分析[J].沙漠与绿洲气象,2016,10(2):31-35.
[25]周雪英,段均泽,李晓川.近52a巴音布鲁克山区日降水变化趋势与突变特征分析[J].沙漠与绿洲气象,2013,7(5):19-24.