Journal of Arid Meteorology
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WANG Na1,FANG Jiangang1,CUI Wei1,XIAO Keli2,WANG Qi1
Online:
Published:
王娜1,方建刚1,崔巍1,肖科丽2,王琦1
作者简介:
基金资助:
国家重点基础研究发展规划基金项目 ( 2010CB833406)资助
Abstract:
Based on NCEP/NCAR reanalysis data and monthly precipitation data in Shaanxi Province from 1961 to 2008,the spatial and temporal distribution characteristics of summer precipitation and the abnormal signal of early climate system characteristics were ana- lyzed by using EOF and composite analysis methods. Results show that when the Ural Mountain and the Okhotsk Sea high were stron- ger,the Baikal trough was deeper,and the west Pacific subtropical high strengthened and extended westward in summer,there would be flooding in summer of Shaanxi. Whereas,when Shaanxi was controlled by the northwest flow in front of the Central - Asian ridge, the west Pacific subtropical high was weaker and extended eastward,it would be drought in summer of Shaanxi. When the Central - A- sian ridge was stronger and extended westward,the west Pacific subtropical high strengthened,the India - Burma trough was weaker, and there were abnormal strong north wind in the eastern region of Northwest to the North China at the level of 700 hPa,SST in the middle east equatorial Pacific was higher and in west wind drift area was lower,SST in India ocean was higher in the preceding winter, there would be flooding in summer of Shaanxi. Whereas when the Northwestern Europe trough was stronger,the Central - Asian ridge was weaker,the west Pacific subtropical high was weaker,the India - Burma trough was stronger,there were abnormal strong south wind in the eastern region of Northwest to North China at the level of 700 hPa,SST in the middle east equatorial Pacific was lower and higher in west wind drift area,and SST in India ocean was lower in the preceding winter,there would be drought in summer of Shaanxi.
Key words: drought and flood in summer, the preceding atmospheric circulation anomalies, Shaanxi Province
摘要:
利用1961 ~2008 年 NCEP/NCAR 再分析资料以及陕西地面月降水资料,采用 EOF 分解、合成分析等方法,分析了陕西夏季旱涝的时空分布特征以及前期气候系统的异常信号特征。结果表明:陕西夏季多雨年乌拉尔山高压脊和鄂霍次克海高压偏强,贝加尔湖低槽偏深,西太平洋副热带高压偏强,西伸脊点偏西。并且前期冬季中高纬度中亚长波脊偏强偏西,西太平洋副热带高压偏强,印缅槽偏弱,700 hPa 西北地区东部至华北偏北风异常偏强,赤道东太平洋出现暖水位相,西风漂流区海温偏低,印度洋海温偏高,陕西夏季易多雨;而陕西夏季少雨年西太平洋副热带高压偏弱,西伸脊点偏东,陕西主要受中亚高脊前西北气流控制。前期冬季中高纬度欧洲西北部低槽偏强,中亚长波脊偏弱,西太平洋副热带高压偏弱,印缅槽偏强,700 hPa 西北地区东部至华北偏南风异常偏强,赤道东太平洋出现冷水位相,西风漂流区海温偏高,印度洋海温偏低,陕西夏季易少雨。
关键词: 夏季旱涝, 前期大气环流异常, 陕西
CLC Number:
P426. 61
WANG Na,FANG Jiangang,CUI Wei,XIAO Keli,WANG Qi. Analysis on Atmospheric Circulation Anomaly of Floods/Drought Summer in Shaanxi Province[J]. Journal of Arid Meteorology, DOI: 10. 11755/j. issn. 1006 -7639(2013) -04 -0702.
王娜,方建刚,崔巍,肖科丽,王琦. 陕西夏季旱涝的主要环流特征[J]. 干旱气象, DOI: 10. 11755/j. issn. 1006 -7639(2013) -04 -0702.
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[1]叶笃正,黄荣辉. 旱涝气候研究进展[M]. 北京:气象出版社,1990. 1 -156.[2]张庆云,陶诗言. 亚洲中高纬度环流对东亚夏季降水的影响[J]. 气象学报,1998,56(2):199 -211.[3]贺皓,罗慧,黄宝霞. 陕西盛夏多雨年与少雨年的大气环流特征分析[J]. 中国沙漠,2007,27(2):342 -346.[4]林纾,徐启运. 近13a 影响甘肃省夏季旱涝因子的几点思考[J].干旱气象,2005,23(1):84 -89.[5]方建刚,白爱娟,肖科丽,等. 陕西伏旱气候特征及成因分析[J]. 干旱地区农业研究,2009,27(2):28 -34.[6]赵庆云,赵红岩,刘新伟. 西北东部极端降水事件及异常旱涝季节变化倾向[J]. 中国沙漠,2006,26(5):745 -749.[7]何金海,刘芸芸,常越. 西北地区夏季降水异常及其水汽输送和环流特征分析[J]. 干旱气象,2005,23(1):10 -16.[8]刘晓东,方建刚,杨续超,等. 秦岭邻近地区旬降水气候学及其大气环流特征[J]. 干旱气象,2003,21(3):8 -13.[9]张存杰. 提高气候预测准确率的有效途径[J]. 干旱气象,2003,21(3):90 -93.[10]琚建华,吕俊梅,谢国清,等. MJO 和 AO 持续异常对云南干旱的影响研究[J]. 干旱气象,2011,29(4):401 -406.[11]钱永甫,张艳,郑益群. 青藏高原冬春季积雪异常对中国春夏季降水的影响[J]. 干旱气象,2003,21(3):1 -7.[12]陈隽,孙淑清. 东亚冬季风异常与全球大气环流变化Ⅰ. 强弱冬季风影响的对比研究[J]. 大气科学,1999,23(1):101 -111.[13]陈隽,孙淑清. 东亚冬季风异常与全球大气环流变化Ⅱ. 冬季风异常对全球热带海温变化的影响[J]. 大气科学,1999,23(3):286 -295.[14]张庆云,陶诗言. 夏季西太平洋副热带高压异常时的东亚大气环流特征[J]. 大气科学,2003,27(3):369 -380.[15]Ji L R,Sun S Q,Arpe K,et al. Model study on the interannual variability of Asian winter monsoon and its influence[J]. Advances in Atmospheric Science,1997,14(1):1 -22.[16]陈文,顾雷,魏科,等. 东亚季风系统的动力过程和准定常行星波活动的研究进展[J]. 大气科学,2008,32(4):950 -966.[17]纪立人,布和朝鲁,孙淑清. EAWM 流型域———一种与东亚冬季风异常相联的海—气耦合流型域[J]. 大气科学,1998,22(4):491 -502.[18]朱锦红. 中国夏季降水的可预报性研究[J]. 应用气象学报,1999,10(增刊):79 -87.[19]张世轩,支蓉,封国林,等. 中国东部地区前冬季节来临早晚与夏季降水的关系探究[J]. 大气科学,2012,36(3):564 -578.[20]龚振淞,杨义文. 中国夏季旱涝气候预测相似模型[J]. 气象,2010,36(5):46 -50.[21]王遵娅,丁一汇. 中国雨季的气候学特征[J]. 大气科学,2008,32(1):1 -13.[22]赵汉光,张先恭. 我国东部夏季雨带的气候分类及其环流特征[J]. 气象,1993,19(9):3 -8.[23]孙淑清,陈隽. 冬季风异常与环流的隔季相关 - 东亚冬季风研究之二[J]. 新疆气象,1998,21(1):4 -8.[24]程玉琴,张少文,徐钰强,等. 冬季环流与赤峰地区夏季旱涝[J]. 气象,2001,27(11):44 -47.[25]李麦村. 大气环流的准半年重现现象与长期天气过程[M]. 北京:科学出版社,1985. 1 -14.[26]高智,谢双亭. 陕西汛期降水与前期大气环流遥相关型的联系[J]. 南京气象学院学报,1992,15(4):574 -583.