Temporal and spatial variation of rainfall characteristics under high urbanization in the Lake Taihu Plain

被引：1
|
作者：
Yu Z. [1 ]
Liu P. [1 ]
He Y. [1 ]
Xu Y. [1 ]
Ren X. [2 ]
Zhu L. [3 ]
Xu X. [3 ]
机构：
[1] Nanjing University, Nanjing
[2] The Suzhou Branch of Jiangsu Province Hydrology and Water Resources Investigation Bureau, Suzhou
[3] The Wuxi Branch of Jiangsu Province Hydrology and Water Resources Investigation Bureau, Wuxi
来源：
Hupo Kexue/Journal of Lake Sciences | 2022年 / 34卷 / 06期
关键词：
Lake Taihu Plain region; MSWEP precipitation data; rainfall characteristics; urbanization;
D O I：
10.18307/2022.0625
中图分类号：
学科分类号：
摘要：
Under the intensification of human activities and the impact of climate change, the flood problem caused by the change of rainfall characteristics is becoming increasingly prominent. This article takes the highly urbanized regions of the Lake Taihu Basin as an example. According to multi-source weighted-ensemble precipitation (MSWEP) precipitation data, the rainfall intensity, rainfall duration, rainfall concentration degree and rainfall peak degree are selected. The rainfall data from 1979 to 2016 are divided into events to analyze the evolution characteristics of different rainfall duration-intensity-type and its mechanism in the research area. The results are as follows: (1) The rainfall frequency in the core regions of Lake Taihu under elevated urbanization shows that rain with low rainfall intensity, short rainfall duration, concentrated in mid-term and with higher peaks occurs more commonly. The number of short duration rainfalls, early- and late-term rainfalls show an upward trend, and the number of long and extra-long duration rainfalls, medium-term rainfalls, and moderate peak rainfalls show a downward trend. (2) Based on the analysis of the impact of urbanization on rainfall patterns, the rainfall in areas with high urbanization levels is larger than that in the areas with low urbanization levels. It is more likely to occur heavy rainfall events with rainfall intensity greater than 25 mm/d in high urbanization level areas. Compared with the low urbanization level area rainfall, the high urbanization level area rainfall is more inclined to occur the extreme distribution rainfall such as early and high peak rainfall. Suffering a flood event caused by excessive concentration of rainfall is more possible with the development of urbanization in the study area. © 2022 by Journal of Lake Sciences.
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页码：2134 / 2143
页数：9
相关论文
共 45 条
  • [1] Zhang JY, Song XM, Wang GQ, Et al., Development and challenges of urban hydrology in a changing environment
  • [2] I
  • [3] Hydrological response to urbanization, Advances in Water Science, 25, 4, pp. 594-605, (2014)
  • [4] Areu-Rangel O, Cea L, Bonasia R, Et al., Impact of urban growth and changes in land use on river flood hazard in Villahermosa, Tabasco (Mexico), Water, 11, 2, (2019)
  • [5] Fu XS, Yang XQ, Sun XG., Spatial and diurnal variations of summer hourly rainfall over three super city clusters in Eastern China and their possible link to the urbanization, Journal of Geophysical Research-, Atmospheres, 124, 10, pp. 5445-5462, (2019)
  • [6] Song XM, Zhang JY, Liu JF, Et al., Spatial-temporal variation characteristics of precipitation pattern in Beijing, Journal of Hydraulic Engineering, 46, 5, pp. 525-535, (2015)
  • [7] Hang GR, Chen YS., Analysis of temporal and spatial evolution characteristics of rainfall structure in the Pearl River Delta area under the background of high urbanization, Water Resources Protection, pp. 1-13, (2021)
  • [8] Cui TT, Wang YT, Hu QF., Study on the precipitation evolution in Taihu Lake Basin in the process of urbanization, Jiangsu Water Resources, 8, pp. 1-6, (2019)
  • [9] Yang X, Wang YQ, Liu ZH., Comparison of two different satellite precipitation data in Sichuan from may to August in 2013, Plateau Meteorology, 35, 4, pp. 1039-1049, (2016)
  • [10] Sun ZL, Bao ZX, Shu ZK, Et al., Pattern characteristics of short duration rainstorms in Nanjing City over recent 25 years, Journal of China Hydrology, 39, 5, pp. 78-83, (2019)
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