| GMSTBB揭示的1998年长江大水的异常天气成因 |
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| 引用本文： | 江吉喜,范梅珠.GMSTBB揭示的1998年长江大水的异常天气成因[J].大气科学学报,1999,22(3):331-337. |
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| 作者姓名： | 江吉喜 范梅珠 |
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| 作者单位： | 国家卫星气象中心, 北京, 100081;国家卫星气象中心, 北京, 100081 |
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| 基金项目： | “1998 年长江、嫩江流域特大暴雨的成因及预报应用研究”项目 |
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| 摘 要： | 利用GMSTBB资料分析了1998年夏季长江大水的天气成因。结果指出:在强厄尔尼诺事件和青藏高原强降雪及积雪造成的异常大气环流背景下,副热带高压异常强大且位置偏南偏西,赤道辐合带和夏季风显著偏弱,中纬度地区冷空气不断东移南下,冷暖空气频繁交汇,形成4个持续性暴雨和大暴雨时段,酿成了这场大水。
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| 关 键 词： | 云顶亮温(TBB) 大洪水 成因 |
| 收稿时间： | 1998/11/21 0:00:00 |
| 修稿时间： | 1999/2/18 0:00:00 |
METEOROLOGICAL ANOMALOUS CAUSES FOR THE SEVERE FLOODING OF THE CHANGJIANG IN 1998 REVEALED BY GMS TBB DATA |
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| JIANG Ji-xi and FAN Mei-zhu.METEOROLOGICAL ANOMALOUS CAUSES FOR THE SEVERE FLOODING OF THE CHANGJIANG IN 1998 REVEALED BY GMS TBB DATA[J].大气科学学报,1999,22(3):331-337. |
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| Authors: | JIANG Ji-xi and FAN Mei-zhu |
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| Institution: | National Satellite Meteorological Center, Beijing, 100081;National Satellite Meteorological Center, Beijing, 100081 |
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| Abstract: | The meteorological causes of the severe flooding of the Changjiang during June-August in 1998 is analyzed by using GMSTBB data.The results show that under the abnormal general circulation caused by ENSO event and the early days heavy snow over the Tibetan Plateau,the floods was caused by the four persistent torrential rainfall processes associated with strong subtropical high lying to west and south of normal position,and weak ITCZ and summer monsoon and frequent interaction between cold air from the mid latitudes and warmer air from the tropics. |
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| Keywords: | black body temperature severe flooding causes |
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