| 近50a东北冷涡暴雨水汽源地分布及其水汽贡献率分析 |
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| 引用本文： | 魏铁鑫,缪启龙,段春锋,刘实.近50a东北冷涡暴雨水汽源地分布及其水汽贡献率分析[J].气象科学,2015,35(1):60-65. |
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| 作者姓名： | 魏铁鑫 缪启龙 段春锋 刘实 |
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| 作者单位： | 南京信息工程大学 江苏省农业气象重点实验室, 南京 210044;河北省气象灾害防御中心, 石家庄 050000,南京信息工程大学 江苏省农业气象重点实验室, 南京 210044,南京信息工程大学 江苏省农业气象重点实验室, 南京 210044;安徽省气候中心, 合肥 230000,吉林省气象科学研究所, 长春 130061 |
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| 基金项目： | 公益性行业(气象)科研专项(GYHY201006006-06);江苏高校优势学科建设工程(PAPD)项目 |
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| 摘 要： | 用HYSPLIT v4.9轨迹追踪模式,以分辨率为2.5°×2.5°的再分析资料驱动模式,对东北地区308例冷涡暴雨过程中的目标气块,进行后向轨迹追踪模拟。结果显示东北冷涡暴雨主要有4个水汽源地,(Ⅰ)西太平洋及相邻海域(包括鄂霍次克海、日本海、黄海、渤海和东海)水汽贡献率最大,平均水汽贡献率达39.8%;依次是(Ⅱ)孟加拉湾—南海海域为32.1%;(Ⅲ)欧亚大陆,尤其是贝加尔湖附近为20.9%;(Ⅳ)东北地区的水汽贡献率最小,仅为7.2%。欧亚大陆主要输送700 hPa高度附近的干冷气团,而各海域则输送800 hPa高度以下的暖湿气团。
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| 关 键 词： | 东北冷涡 轨迹追踪 水汽源地 |
| 收稿时间： | 2013/4/25 0:00:00 |
| 修稿时间： | 2013/7/14 0:00:00 |
Water vapor sources distribution of cold eddy rainstorm in northeast China and its contribution analysis in recent fifty years |
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| WEI Tiexin,MIAO Qilong,DUAN Chunfeng and LIU Shi.Water vapor sources distribution of cold eddy rainstorm in northeast China and its contribution analysis in recent fifty years[J].Scientia Meteorologica Sinica,2015,35(1):60-65. |
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| Authors: | WEI Tiexin MIAO Qilong DUAN Chunfeng and LIU Shi |
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| Institution: | Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China;Hebei Meteorological Disaster Prevention Center, Shijiazhuang 050000, China,Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China,Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China;Anhui Climate Center, Hefei 230000, China and Jilin Institute of Meteorological Science, Changchun 130061, China |
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| Abstract: | Driven by the reanalysis data with 2.5°×2.5° spatial resolution, the HYSPLIT v4.9 trajectory tracking mode was used to conduct the tracking simulations in 308 cases of cold eddy rainfall in northeast China. Results showed that water vapor for the northeast China cold eddy rain storm comes from four sources: (a) the Eurasian continent, especially areas near Baikal Lake; (b) Okhotsk Sea, Sea of Japan, the Yellow Sea, Bohai Sea and the western Pacific; (c) sea area from Bengal Bay to the South China Sea; (d) the northeast China. The western Pacific and its nearby sea areas contribute to the largest water vapor, amountuing to 39.8%, including the Okhotsk Sea, Sea of Japan, the Yellow Sea, Bohai Sea and the East China Sea; water vapor contribution rate for the sea area covered from Bengal Bay to the South China Sea is followed with 32.1%; water vapor contribution rate in Eurasia continent and Northeast China are 20.9% and 7.2%, respectively; Eurasia continent mainly transported the dry and cold air mass at 700 hPa, while the other sea areas transported the warm and moist air mass below 800 hPa. |
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| Keywords: | Cold eddy in northeast China Trajectory tracking Water vapor source |
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