METEOROLOGICAL AND HYDROLOGICAL CHARACTERISTICS OF SEVERE FLOODING IN CHINA DURING THE SUMMER OF 1998

Zhang Shunli; Tao Shiyan; Zhang Qingyun; Zhang Xiaoling

Vol.12, NO.4, 2001

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2001 > 12(4): 442-457

Zhang Shunli, Tao Shiyan, Zhang Qingyun, et al. Meteorological and hydrological characteristics of severe flooding in China during the summer of 1998. J Appl Meteor Sci, 2001, 12(4): 442-457.

Citation:

Zhang Shunli, Tao Shiyan, Zhang Qingyun, et al. Meteorological and hydrological characteristics of severe flooding in China during the summer of 1998. J Appl Meteor Sci, 2001, 12(4): 442-457.

Zhang Shunli, Tao Shiyan, Zhang Qingyun, et al. Meteorological and hydrological characteristics of severe flooding in China during the summer of 1998. J Appl Meteor Sci, 2001, 12(4): 442-457.

Citation:

Zhang Shunli, Tao Shiyan, Zhang Qingyun, et al. Meteorological and hydrological characteristics of severe flooding in China during the summer of 1998. J Appl Meteor Sci, 2001, 12(4): 442-457.

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METEOROLOGICAL AND HYDROLOGICAL CHARACTERISTICS OF SEVERE FLOODING IN CHINA DURING THE SUMMER OF 1998

Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029

Received Date: 2000-08-07
Rev Recd Date: 2000-09-07
Publish Date: 2001-11-30

Abstract

Abstract

An extremely great flood occurred over the Yangtze River, Nenjiang-Song huajiang regions, and Pearl River during the summer of 1998, its meteorological and hydrological characteristics and causes are presented. Pearl River, Yangtze River, Nenjiang-Songhuajiang basins had successive heavy rains in the second half of June. Yangtze River valley experienced the second period of the Meiyu in the last ten-day period of July. Heavy rainfalls centered in Zhalantun were observed over Nenjiang-Songhuajiang regions in first half of August. Frequent heavy rainfalls brought about the rapidly rising water level in most part along the middle reaches of Yangtze, Nenjiang, and Pearl River, and led to the greatest floods in the recent 100 years. The southward shifted subtropical high over the West Pacific was responsible for the second period of Meiyu. The right mixture of subtropical high, monsoon swell from South China Sea, cold air mass coming from mid-high latitudes, and MCSs from the Tibetan Plateau contributed to successive heavy rains over the Yangtze River valley.
- Yangtze River;
- Nenjiang River;
- Pearl River;
- Flash flood;
- Meteorology;
- Hydrology;
- Monsoon swell

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References(10)

Figures and Tables

图 1 1998年6～8月珠江 (a)、长江 (b)、嫩江、松花江 (c) 流域平均逐日降水量 (单位: mm)

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图 2 1998年5～8月100°～120°E平均的大气整层水汽输送通量矢量 ( 图中箭头, 单位: kg·m^-1·s^-1)和TBB (单位: ℃, 阴影为TBB ≤-5℃) 时间-纬度剖面图

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图 3 1998年6月1～11日平均500 hPa高度场 (单位: dagpm) 和TBB (单位: ℃, 阴影为TBB ≤-10 ℃)

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图 4 1998年6～7月沿100°～120°E平均的700 hPa温度时间-纬度剖面图 (单位: ℃)

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图 5 1998年6月12～28日 (a)、7月21～30日 (b)、8月1～18日 (c) 平均500 hPa高度场 (单位: dagpm)

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图 6 1998年6月12～28日 (a)、7月21～30日 (b)、8月1～18日 (c) 平均大气整层水汽输送通量矢量 (图中箭头, 单位: dagpm) 和可降水量 ( 单位: mm, 阴影为 W ≥50 mm)

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图 7 1998年6月12～28日 (a)、7月21～30日 (b)、8月1～18日 (c) 平均850 hPa风 (单位:m/s) 和 TBB (单位: ℃, 阴影为TBB ≤-10 ℃)

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图 8 沿30°N的TBB时间-经度剖面图 (单位: ℃, 图中省略了负号) (a) 1998年第一段梅雨期 (b) 1998年第二段梅雨期

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图 9 1998年夏季 (6～8月) 珠江 (a)、长江 (b)、嫩江、松花江 (c) 流域平均逐日累积降水量 (单位: mm, 图中+字线) 和高要 (a)、城陵矶 (b)、齐齐哈尔 (c) 水位 (单位: m, 图中空心圆线)

(图中长虚线为警戒水位, 点线为历史最高水位, 高要水位资料仅限于6月18日～7月3日)

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