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China Daily:Meteorology provides key to flood control

来源:      时间: 2019-09-19 10:20

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The most critical moment for residents of the Mengwa Flood Diversion Area in Funan county, Anhui province, came on June 14, 1991, when the water of the Huaihe River surpassed the safe level of 28.66 meters at the Wangjiaba sluice gates.

The State Flood Control and Drought Relief Headquarters gave an order to open the sluice gates at midnight, and divert the flood into the Mengwa area. That meant the residents would have to be evacuated immediately.

"I even heard that explosives had been prepared, for fear that the sluice gates would not open," said Liu Xiaochang, retired chief engineer at the Anhui Meteorological Center.

"But there were still more than 20,000 villagers inside the area waiting to be evacuated, and the government could not accomplish that in such a short time."

Local meteorologists used every second and the limited information they had to analyze the rainfall trend.

They came to the conclusion that the storm would cease during the night in the area around the upper reaches of the river and the Mengwa area.

"If we got it wrong, it would be a disaster," said Liu, who decided with his colleagues to report their assessment to flood control authorities and delay opening the gate until about 8 am on June 15.

By the time the sluice gates were opened at 7:45 am, all the villagers had been safely evacuated.

Acknowledged as the most severe flooding since 1961, the incident is remembered by people nationwide, even though few know about the contribution the meteorologists made because the details were barely mentioned in numerous memoirs published later.

In 2005, the China Meteorological Administration approved the establishment of the Huaihe Basin Meteorological Center, aimed at providing coordinated services across the entire Huaihe River drainage area.

The area extends 1,000 kilometers from west to east, covering 270,000 square kilometers in Henan, Anhui, Jiangsu and Shandong provinces.

The center, which opened in 2005, tracks all types of real-time meteorological data collected from across the area via thousands of automatic monitoring stations, satellites and radars, according to Wang Dongyong, director of both the Huaihe center and the Anhui Meteorological Center.(From 《China Daily》  https://enapp.chinadaily.com.cn/a/201907/18/AP5d2fc6c2a3106b83cdbf8215.html)

译文:

1991年6月14日,安徽省阜南县濛洼蓄洪区居民面临的最为危急的时刻,淮河王家坝段闸超过了28.66米的安全水位。

国家防汛抗旱指挥部下令午夜开闸,将洪水引至濛洼地区。这意味着居民必须立即撤离。

安徽省气象台退休总工程师刘孝昌说:“我甚至听说已经准备好了炸药,担心到时水闸打不开。”

但该地区仍有2万多村民等待撤离,政府在这么短的时间内难以做到。

当地气象学家争分夺秒利用有限的气象信息分析降雨趋势。

他们得出的结论是,在河流上游和濛洼地区,夜间暴雨将停止。

“如果我们弄错了,那将是一场灾难,”刘孝昌说,他和他的同事们决定向防洪部门报告他们的预报结论,并将开闸时间推迟到6月15日上午8点左右。

到早上7:45闸门最终打开时,所有村民都已安全撤离。

这是自1961年有气象记录以来最严重的洪灾,但是很少有人知道气象专家们所做的贡献,因为在后来出版的许多回忆录中鲜能看到这样的细节。

2005年,中国气象局批准设立淮河流域气象中心,为整个淮河流域提供更为协调的服务。

该流域东西长1000公里,覆盖河南、安徽、江苏、山东等省27万平方公里。

据淮河流域气象中心主任、安徽省气象台台长王东勇介绍,该中心于2005年设立,通过数千个自动监测站、卫星和雷达跟踪收集各种实时气象数据。(转自中国日报2019年7月18日6版 链接https://enapp.chinadaily.com.cn/a/201907/18/AP5d2fc6c2a3106b83cdbf8215.html)

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