Based on the ERA-interim reanalysis data and the daily meteorological precipitation data of 824 China stations during 1983 and 2012, we analysed the inter-annual variation of Sichuan Basin Vortex (SBV) whose lifespan is equal to or more than 24 hours (defined as long lifespan) and the corresponding cause, as well as its influence on seasonal precipitation on summer. The main conclusions are as follows:(1) The birthplace of long lifespan SBV was located in southwest and northeast of Sichuan Basin, SBV could be classified into two types (Southwest Type and Northeast Type) based on the birthplace. (2) The frequency of Southwest Type was much higher than Northwest Type, and Southwest Type contributed much more to seasonal precipitation as a result, however Northeast Type caused much more daily precipitation and influenced broader region in mostly case. Because Southwest Type was stable and less dynamic, its influenced region was limited within its birthplace. However, Northeast type was active, its influenced area was surrounded subtropical high. There was obvious difference on precipitation range between Southwest Type and Northeast Type. (3) As to seasonal scale, the key atmosphere circulation factors which influenced the frequency of the two types were various from each other. When the intensity of long wave trough in middle attitude got stronger, the subtropical high extended westward more, besides the South Branch Trough of the plateau got stronger, it was advantageous to produce more Southwest Type SBV. On the contrary, when the intensity of South Asia high got weaker, Siberia high ridge was stably maintained, as well as the edge of subtropical high was just located near the east of Yun Gui Plateau, it was advantageous to produce more Northeast Type SBV.
LI Chao
,
LI Yueqing
,
JIANG Xingwen
. Mechanism of Long Lifespan Sichuan Basin Vortex's Activity Influence the Precipitation in Sichuan-Chongqing Region on Summer[J]. Plateau Meteorology, 2017
, 36(3)
: 685
-696
.
DOI: 10.7522/j.issn.1000-0534.2016.00064
[1]Li Guoping. 2007. Dynamic meteorology of Qinghai-Tibetan Plateau[M]. Beijing:China Meteorological Press, 23.<br/>李国平. 2007.青藏高原动力气象学[M].北京:气象出版社, 23.
[2]Wang Zuoshu, Wang Yinghui, Liang Yiguo. 1996. The numerical experiment research on a southwest vortex rainstorm[M]//Research on the theory of rainstorm science, business experiment and weather dynamics. Beijing:China Meteorological Press, 257-267.<br/>王作述, 汪迎辉, 梁益国. 1996.一次西南低涡暴雨的数值试验研究[M]//暴雨科学、业务实验和天气动力学理论的研究.北京:气象出版社, 257-267.
[3]Chen Dong, Li Yueqing, Huang Ronghui. 2007. The physical process analyses of the southwest vortex development and its effect on heavy rainfall in eastern Sichuan under the saddle pattern background of large-scale circulations[J]. Chinese J Atmos Sci, 31(2):185-201.<br/>陈栋, 李跃清, 黄荣辉. 2007.在"鞍"型大尺度环流背景下西南低涡发展的物理过程分析及其对川东暴雨发生的作用[J].大气科学, 31(2):185-201.
[4]Chen Qizhi, Huang Yiwu, Wang Qiwei, et al. 2007. The statistical study of the Southwest Vortexes during 19902004[J]. Journal of Nanjing University (Natural Sciences), 43(6):633-642.<br/>陈启智, 黄奕武, 王琪玮, 等. 2007. 1990-2004年西南低涡活动的统计研究[J].南京大学学报(自然科学版), 43(6):633-642.
[5]Chen Yan. 2007. Statistical study on activity of Southwest Vortex and relationship with precipitation[D]. Nanjing:Nanjing University of Information and Technology Dissertation.<br/>陈艳. 2007. 西南低涡的气候特征及与降水的关系研究[D]. 南京: 南京信息工程大学硕士学位论文.
[6]Chen Zhongming, Min Wenbin. 2000. The statistical study of the southwest vortex[M]//Tao Shiyan, et al. The progress of theory research about the Second Qinghai-Tibetan Plateau atmospheric scientific experiment. Beijing:China Meteorological Press, 368-378.<br/>陈忠明, 闵文彬. 2000. 西南低涡的统计研究[M]. 陶诗言等. 第二次青藏高原大气科学实验理论研究进展. 北京: 气象出版社, 368-378.
[7]Shen Guixun, He Guangbi. 2008. The observed facts analysis of Southwest Vortex from 2000 to 2007[J]. Plateau and Mountain Meteorology Research, 28(4):59-65.<br/>谌贵珣, 何光碧. 2008. 2000-2007年西南低涡活动的统计分析[J].高原山地气象研究, 28(4):59-65.
[8]Fu Shenming. 2009. Study on the structure characteristics and formation mechanism of Southwest Vortex with heavy rainfall[D]. Beijing:China Science Academy, IAP, Dissertation.<br/>傅慎明. 2009. 引发强降水的西南低涡结构特征及其发生发展机理研究[D]. 北京: 中国科学院大气物理研究所博士学位论文.
[9]Jiao Meiyan, Li Chuan, Li Yanxiang. 2005. Mesoscale analyses of a Sichuan heavy rainfall[J]. J Appl Meteor Sci, 16(5):699-704.<br/>矫梅燕, 李川, 李延香. 2005.一次川东大暴雨过程的中尺度分析[J].应用气象学报, 16(5):699-704.
[10]Li Chao, Li Yueqing, Jiang Xingwen. 2015. Statistical characteristics of the inter-monthly variation of the Sichuan Basin vortex and the distribution of daily precipitation[J]. Chinese J Atmos Sci, 39(6):1191-1203.<br/>李超, 李跃清, 蒋兴文. 2015.四川盆地低涡的月际变化及其日降水分布统计特征[J].大气科学, 39(6):1191-1203.
[11]Li Ruiqing, Lü Shihua, Han Bo, et al. 2012. Preliminary comparison and analyses of air temperature at 2 m height between three reanalysis data-sets and observation in the east of Qinghai-Xiang Plateau[J]. Plateau Meteor, 31(6):1488-1502.<br/>李瑞青, 吕世华, 韩博, 等. 2012.青藏高原东部三种再分析资料与地面气温观测资料的对比分析[J].高原气象, 31(6):1488-1502.
[12]Li Yueqing, Zhao Xingbin, Deng Bo. 2010. Intensive observation scientific experiment of Southwest Vortex in summer of 2010[J]. Plateau and Mountain Meteorology Research, 30(4):80-84.<br/>李跃清, 赵兴炳, 邓波. 2010. 2010年夏季西南涡加密观测科学试验[J].高原山地气象研究, 30(4):80-84.
[13]Li Yueqing, Zhao Xingbin, Zhang Lihong, et al. 2011. Intensive observation scientific experiment of Southwest Vortex in summer of 2011[J]. Plateau and Mountain Meteorology Research, 31(4):7-11.<br/>李跃清, 赵兴炳, 张利红, 等. 2011. 2011年夏季西南涡加密观测科学试验[J].高原山地气象研究, 31(4):7-11.
[14]Li Yueqing, Zhao Xingbin, Zhang Lihong, et al. 2012. Intensive observation scientific experiment of Southwest Vortex in summer of 2012[J]. Plateau and Mountain Meteorology Research, 31(4):7-11.<br/>李跃清, 赵兴炳, 张利红, 等. 2012. 2012年夏季西南涡加密观测科学试验[J].高原山地气象研究, 32(4):1-8.
[15]Tao Li. 2012. The climate characteristics of the Southwest Vortex and its relationship with the Sichuan and Chongqing rainstorm[D]. Chengdu:Chengdu University of Information and Technology Dissertation.<br/>陶丽. 2012. 西南低涡的气候特征及其与川渝暴雨的关系研究[D]. 成都: 成都信息工程学院硕士学位论文.
[16]Xu Yuhua. 1991. The climate of Southwest China[M]. Beijing:China Meteorological Press, 56-60.<br/>徐裕华. 1991.西南气候[M].北京:气象出版社, 56-60.
[17]Zhao Tianbao, Fu Chongbin. 2006. Preliminary comparison and analysis between ERA-40, NCEP2 reanalysis and observation over China[J]. Climate Environ Res, 11(1):14-32.<br/>赵天保, 符淙斌. 2006.中国区域ERA-40、NCEP-2再分析资料与观测资料的初步比较与分析[J].气候与环境研究, 11(1):14-32.
[18]Zhao Tianbao, Fu Chongbin. 2009. Applicability evaluation for several reanalysis datasets using the upper-air observations over China[J]. Chinese J Atmos Sci, 33(3):634-648.<br/>赵天保, 符淙斌. 2009.应用探空资料评估几类再分析资料在中国区域的适用性[J].大气科学, 33(3):634-648.
[19]Zhi Xing, Xu Haiming. 2013. Comparative analysis on monthly mean characteristic of free atmospheric temperature between three reanalysis datasets and radiosonde dataset in China[J]. Plateau Meteor, 32(1):97-109.<br/>支星, 徐海明. 2013.三种再分析资料的高空温度与中国探空温度资料的季节平均特征对比分析[J].高原气象, 32(1):97-109.
