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近海台风对中国东部夏季降水的贡献

申茜 张世轩 赵俊虎 汪栩加

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近海台风对中国东部夏季降水的贡献

申茜, 张世轩, 赵俊虎, 汪栩加

Contribution of typhoon over coastal waters to summer rainfall in eastern China

Shen Qian, Zhang Shi-Xuan, Zhao Jun-Hu, Wang Xu-Jia
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  • 目前汛期预测主要针对季风系统形成的降水, 而对台风等热带系统的影响并未考虑, 其主要原因是台风是一个剧烈的天气尺度过程, 与短期气候预测尺度并不匹配, 因而无法进行考虑. 这也成为提升汛期预测技巧的一个制约因素. 针对这样的问题, 本文从气候的角度, 提出一个能较为客观地衡量台风对夏季降水影响强弱的指数––台风影响指数. 利用1960–2011年中国东部站点降水资料及中国气象局上海台风所整理的热带气旋资料, 从月、季尺度对中国夏季台风影响强弱变化特征进行分析, 探讨台风对东部地区夏季降水的贡献. 结果表明: 1)台风从6月至8月呈增强的趋势, 6月份最弱, 7月份居中, 8月份最强; 2)从台风降水及占总降水的比例分布来看, 纬向呈东部高西部低, 经向呈从东北地区至华南地区依次增大的趋势, 长江以南地区台风降水量占夏季降水量的比重可达10%以上, 7, 8月份东南沿海地区的台风降水量最大可达100 mm以上, 可达当月总降水量的40%; 3)台风影响指数与夏季降水的相关表明, 台风对中国东部降水的影响具有时、空差异性, 6月份与华南地区呈负相关, 7 月份与东南沿海地区呈正相关, 而与长江中下游地区呈负相关; 8月份与华南、华北地区呈正相关、与长江中下游地区呈负相关. 这主要是由台风、夏季风和西北太平洋副热带高压共同影响的.
    Now, it is difficult to consider the typhoon rainfall in the short-term climate prediction. This is mainly because the typhoon is a strong synoptic scale system and it does not match the scale of the short-term climate forcast. It is a factor restricting the great improvement of forecast. By using station precipitation data in eastern China from 1960 to 2011 and CMA-STI Best track dataset for tropical cyclones over the western north pacific, we analyse the strength variation of typhoon influence from month and quarter scale in summer by determining the typhoon influence index, then discuss the contribution of typhoon rainfull to summer rainfall in eastern China. 1) On average, the typhoon is enhanced from June to August, it is weakest in June, and strongest in August. 2) From the distribution of typhoon rainfall and its proportion of the total precipitation in eastern China, totally, the tyhoon rainfall is higher in eastern region than in the western region on the same latitude, and it is higher in southern region than in the northern region on the same longitude. The ratio of typhoon rainfall to the total precipitation could reach up to 10% in the South of the Yangtze river region. The typhoon rainfall can also reach up to 100 mm in the southeast coastal area in July and August, which can amount to 40% of the total precipitation during the month. 3) The correlation of the typhoon influence index with summer precipitation shows that the typhoon’s influences on the precipitation in eastern China are different spatiotemporally. The results indicate that the negative correlation is in southern part of China in June, the positive correlation is the southeast coastal area in July, the positive correlation is in the south China in August, and the negative correlation is in the middle and lower reaches of the Yangtze river region, which are mainly due to the typhoon, summer moonsoon, and high pressure in the north-east pacific subtripics respectively.
    • 基金项目: 国家自然科学基金(批准号:40930952,41175067,41205040);国家重点基础研究发展计划(批准号:2012CB955902,2013CB430204)和公益性行业科研专项(批准号:GYHY201106016)资助的课题.
    • Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 40930952, 41175067, 41205040), the National Basic Research Program of China (Grant Nos. 2012CB955902, 2013CB430204), and the the Special Scientific Reserch Fund of Meteorological Public Welfare Profession, China (Grant No. GYHY201106016).
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  • [1]

    Wang L, Chen G H, Huang R H 2009 J. Nanjing Inst. Meteorol. 32 182 (in Chinese) [王磊, 陈光华, 黄荣辉 2009 南京气象学院学报 32 182]

    [2]

    Lei X T, Chen L S 2001 Tropical Meteorol. 17 452 (in Chinese) [雷小途, 陈联寿 2001 热带气象学报 17 452]

    [3]

    Lei X T, Chen L S 2001 Acta Meteor. Sin. 59 602 (in Chinese) [雷小途, 陈联寿 2001 气象学报 59 602]

    [4]

    Rodgers E B, Adler R F, Pierce H F 2001 Appl. Meteorol. 40 1785

    [5]

    Shuman P Michael, Koermer J P, Reynolds S D 2001 The 81st Ams Annual Meeting Albuquerque, New Mexico, 2001

    [6]

    Englehart P J, Douglas A V 2001 Inter. J. Clim. 21 1357

    [7]

    Hasegawa A 2005 The 2nd International Workshop on the Kyosei Project Hawaii 24-26 February, 2005

    [8]

    Han H 2005 M. S. Dissertation (Beijing: Beijing Normal University) (in Chinese) [韩晖 2005 硕士学位论文(北京: 北京师范大学)]

    [9]

    Wang R M, Ren F M, Li W J, Wang X L 2008 Tropical Meteorol. 24 233 (in Chinese) [王咏梅, 任福民, 李维京, 王小玲 2008 热带气象学报 24 233]

    [10]

    Jian J, Yu J H 2006 J. Nanjing Inst. Meteorol. 29 819 (in Chinese) [建军, 余锦华 2006 南京气象学院学报 29 819]

    [11]

    Zhuo k, Xie J N, Ma J X 2000 Plateau Meteorol. 19 260 (in Chinese) [卓嘎, 谢金南, 马镜娴 2000 高原气象 19 260]

    [12]

    Ren F M, Gleason B, Easterling D 2001 Tropical Meteorol. 17 308 (in Chinese) [任福民, Byron Gleason, David Easterling 2001 热带气象学报 17 308]

    [13]

    Wang Y M, Ren F M, Wang X L 2006 Meteorol. Monthly. 32 6 (in Chinese) [王咏梅, 任福民, 王小玲 2006 气象 32 6]

    [14]

    Guo Q Y, Cai J N, Shao X M, Sha W Y 2003 Acta Geo. Sin. 58 576 [郭其蕴, 蔡静宁, 邵雪梅, 沙万英 2003 地理学报 58 576]

    [15]

    Li Y, Jin R H, Wang S G 2010 J. Lanzhou Univ. 46 47 (in Chinese) [李艳, 金荣花, 王式功 2010 兰州大学学报 46 47]

    [16]

    Wang Y M, Li W J, Ren F M, Wang X L 2007 Tropical Meteorol. 23 538 (in Chinese) [王咏梅, 李维京, 任福民, 王小玲 2007 热带气象学报 23 538]

    [17]

    He M 1999 Appl. Meteorol. Sci. 10 171 (in Chinese) [何敏 1999 应用气象学报 10 171]

    [18]

    Zhang Q Y, Tao S Y, Chen L T 2003 Acta Meteorol. Sin. 61 560 (in Chinese) [张庆云, 陶诗言, 陈烈庭 2003 气象学报 61 560]

    [19]

    Liu Y Y, Li W J, Ai X, Li Q Q 2012 Appl. Meteorol. Sci. 23 415 (in Chinese) [刘芸芸, 李维京, 艾秀, 李清泉 2012 应用气象学报 23 415]

    [20]

    Chen L S, Ding Y H 1979 The Introduction of Northeast Typhoon (Beijing: Science Press) pp22 (in Chinese) [陈联寿, 丁一汇 1979 西太平洋台风概论 (北京: 科学出版社) 第22页]

    [21]

    Wu Y J 2008 Ph.D. Dissertation (Lanzhou: Lanzhou University) (in Chinese) [吴岩峻 2008 博士学位论文(兰州: 兰州大学)]

    [22]

    Xu H M, Wang Q Q, Ge Z X 1994 Tropical Meteorol. 10 231 (in Chinese) [徐海明, 王谦谦, 葛朝霞 1994 热带气象学报 10 231]

    [23]

    Wang Q G, Feng G L, Zheng Z H, Zhi R 2011 Chin. J. Atmos Sci. 35 288 (in Chinese) [王启光, 封国林, 郑志海, 支蓉 2011 大气科学 35 288]

    [24]

    Yang J, Wang Q G, Zhi R, Feng G L 2011 Acta Phys. Sin. 60 029204 (in Chinese) [杨杰, 王启光, 支蓉, 封国林 2011 物理学报 60 029204]

    [25]

    Xiong K G, Feng G L, Huang J P, Chou J F 2012 Acta Meteorol. Sin. 70 213 (in Chinese) [熊开国, 封国林, 黄建平, 丑纪范 2012 气象学报 70 213]

    [26]

    Zhao J H, Feng G L, Wang Q G, Yang J, Gong Z Q 2010 Chin. J. Atmos Sci. 35 1071 (in Chinese) [赵俊虎, 封国林, 王启光, 杨杰, 龚志强 2010 大气科学 35 1071]

    [27]

    Feng G L, Dong W J, Gong Z Q, Hou W, Wan S Q, Zhi R 2006 The Theory and Method about the Spatial and Temporal Distribution of the Observation Data’s Nolinear (Beijing: China Meteorological Press) p227 (in Chinese) [封国林, 董文杰, 龚志 强, 侯威, 万仕全, 支蓉 2006 观测数据非线性时空分布理论和方法 (北京:气象出版社) 第227页]

    [28]

    Feng G L, Hou W, Dong W J 2006 Acta Phys. Sin. 55 962 (in Chinese) [封国林, 侯威, 董文杰 2006 物理学报 55 962]

    [29]

    Gong Z Q, Feng G L, Dong W J, Li J P 2006 Acta Phys. Sin. 55 3181 (in Chinese) [龚志强, 封国林, 董文杰, 李建平 2006 物理学报 55 3181]

    [30]

    Feng G L, Dai X G, Wang A H, Chou J F 2001 Acta Phys. Sin. 50 606 (in Chinese) [封国林, 戴新刚, 王爱慧, 丑纪范 2001 物理学报 50 606]

    [31]

    Wang X J, Zhi R, He W P, Gong Z Q 2012 Chin. Phys. B 21 029201

    [32]

    Gong Z Q, Feng G L, Wan S Q, Li J P 2006 Acta Phys. Sin. 55 477 (in Chinese) [龚志强, 封国林, 万仕全, 李建平 2006 物理学报 55 477]

    [33]

    Feng G L, Dong W J, Jia X J, Cao H X 2002 Acta Phys. Sin. 51 1181 (in Chinese) [封国林, 董文杰, 贾晓静, 曹鸿兴 2002 物理学报 51 1181]

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出版历程
  • 收稿日期:  2013-05-11
  • 修回日期:  2013-06-15
  • 刊出日期:  2013-09-05

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