主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2018, Vol. 34 ›› Issue (5): 66-75.doi: 10.3969/j.issn.1673-503X.2018.05.009

• 论文 • 上一篇    下一篇

未来50 a长江三角洲地区干旱和洪涝灾害风险预估

尹晓东1, 董思言2, 韩振宇2, 王荣2   

  1. 1. 西宁市环境监测站, 青海 西宁 810008;
    2. 国家气候中心, 北京 100081
  • 收稿日期:2017-05-15 修回日期:2017-09-30 出版日期:2018-10-31 发布日期:2018-10-31
  • 通讯作者: 董思言,E-mail:dongsy@cma.gov.cn E-mail:dongsy@cma.gov.cn
  • 作者简介:尹晓东,男,1982年生,工程师,主要从事环境监测和气候变化研究,E-mail:30301481@qq.com。
  • 基金资助:
    国家重点研究发展计划(2018YFA0606301)和中国气象局气候变化专项(CCSF201805、CCSF201808)共同资助。

Projected risk of drought and flood at Yangtze River Delta for the next 50 years

YIN Xiao-dong1, DONG Si-yan2, HAN Zhen-yu2, WANG Rong2   

  1. 1. Xining Environmental Monitoring Station, Qinghai 810008, China;
    2. National Climate Center, China Meteorological Administration, Beijing 100081, China
  • Received:2017-05-15 Revised:2017-09-30 Online:2018-10-31 Published:2018-10-31

摘要: 中国长江三角洲地区人口稠密,经济发达,在全球气候变暖的背景下未来长江三角洲地区干旱和洪涝灾害风险也将发生变化。本文利用耦合模式比较计划第五阶段(Coupled Model Inter-comparison Project Phase 5,CMIP 5)中26个全球气候模式的模拟结果,对不同预估情景下长江三角洲地区未来50 a(2021—2040年和2046—2065年)两个时期干旱和洪涝灾害风险的变化进行定量预估。结果表明:未来50 a长江三角洲地区干旱和洪涝灾害呈由北向南风险强度降低的空间分布特征。由RCP(Representative Concentration Pathways)2.6情景至RCP 8.5情景,长江北部地区洪涝灾害风险逐渐增加,而干旱灾害风险变化略有差异。在RCP 8.5情景下,未来50 a第二个时期(2046—2065年)长江三角洲地区干旱和洪涝灾害风险为所有情景中最大,高于IV级(包括IV级)的面积增加,江苏北部和安徽北部地区为V级干旱灾害风险与IV级洪涝灾害风险叠加区域,而江苏南部和上海地区为干旱与洪涝灾害最高等级风险(V级)叠加区域。

关键词: CMIP5, 干旱, 洪涝, 风险, RCP, 预估

Abstract: The Yangtze River Delta region has a dense population and high economic development.Under the background of global warming,the risk of future drought and flood in this region will change.Based on the results from 26 CMIP 5 (Coupled Model Inter-comparison Project Phase 5) global climate models,the drought and flood risk were quantitatively projected in the Yangtze River Delta region for the next 50 years (dividing two periods,2021-2040 and 2046-2065).The results show that the intensity of drought and flood risk reduces from north to south in the Yangtze River Delta region.According to the RCP (Representative Concentration Pathways) 2.6 to 8.5 scenarios,the flood risk in the northern part of the Yangtze River will gradually increase,while the drought risk shows a slightly different pattern.Under the RCP 8.5 scenario,the drought and flood risk is the most serious during the second period of the next 50 years among all scenarios and is higher than the area increment in the IV grade (including the IV grade) in the Yangtze River Delta region.The northern Jiangsu and northern Anhui province is the overlying region for the 5th-drought and the 4th-graded flood risks,while the southern Jiangsu province and Shanghai are that for the highest level of the 5th-grade of drought and flood risk.

Key words: CMIP5, Drought, Flood, Risk, Representative Concentration Pathways (RCP), Projection

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