Changes in rainfall of different intensities due to urbanization-induced land-use changes in Shenzhen, China
Changes in rainfall of different intensities due to urbanization-induced land-use changes in Shenzhen, China
复制标题
中国深圳城市化引起的土地利用变化导致不同强度降雨量的变化
DOI：
10.1007/s00382-020-05601-y
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发表时间：
2021-01
期刊：
影响因子：
4.6
通讯作者：
Wu Jian
中科院分区：
文献类型：
--
作者：
Zhao Deming;Zha Jinlin;Wu Jian
深圳市位于中国南部，受东亚季风气候系统的影响，自20世纪80年代初以来经历了快速的城市化，并于2010年代成为国际大都会。采用3.3km空间分辨率的嵌套数值积分方法，研究了深圳市不同强度等级降水的变化，其中城市地表的分布和扩展可以很好地用卫星资料表示。城市引起的影响分区域平均日降雨量（DRAIN）和累积体积降雨量（VRAIN）的强度和变化，以及降雨面积和降雨天数，进行了评估。对于总降雨量，显着的变化，只检测到在VRAIN和排水量的变化在季节尺度上。然而，对于不同强度等级的降雨，城市引起的VRAIN和DRAIN强度和变化的年度和季节的结果更明显。只有在年尺度上的大暴雨的显着变化，而显着的次区域特征的季节尺度上的各种等级的降雨。从20世纪80年代到21世纪10年代，由于城市地表扩张，暴雨的DRAIN/VRAIN强度和变率增加，这与垂直环流增强和水汽通量变化有关。局地蒸发相关的水汽通量减少和东南风水汽输送减弱导致近地层相对湿度降低。然而，西南水汽通量的增强导致对流层中低层相对湿度的增加。
Shenzhen city, located in southern China and governed by the East Asian monsoon climate system, has experienced rapid urbanization since the beginning of the 1980s, and had become an international metropolis by the 2010s. Urban-induced changes in rainfall of various intensity grades over Shenzhen are investigated using nested numerical integrations at 3.3 km spatial resolution, within which urban surface distributions and expansions are well represented by satellite-based data. The urban-induced impact on subregion average of daily rainfall (DRAIN) and cumulative volumetric rainfall (VRAIN) intensity and variability, as well as rain areas and number of rain days, are evaluated. For total rainfall amounts, significant changes are only detected in VRAIN and DRAIN variability on seasonal scales. However, for different intensity grades of rainfall, urban-induced changes in VRAIN and DRAIN intensity and variability of both annual and seasonal results are more pronounced. Significant changes are detected only for heavy storm rain on annual scales, whereas marked subregional characteristics are found for various grades of rainfall on seasonal scales. The increased DRAIN/VRAIN intensity and variability for heavy storm rain due to urban surface expansion from the 1980s to the 2010s can be linked to intensified vertical circulation and changes in moisture flux. A reduced local evaporation-related moisture flux and a weakened southeasterly water vapor transport result in a decreased relative humidity in the near-surface layers. However, an intensified southwesterly moisture flux induces an increased relative humidity in the low-middle troposphere.
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DOI：
10.5065/d6000072
发表时间：
2016-01
期刊：
--
影响因子：
--
作者：
U. Schneider;A. Becker;P. Finger;Anja Meyer-Christoffer;B. Rudolf;M. Ziese
通讯作者：
U. Schneider;A. Becker;P. Finger;Anja Meyer-Christoffer;B. Rudolf;M. Ziese
影响因子：
3.9
作者：
A. Gero;A. Pitman;G. Narisma;C. Jacobson;R. Pielke
通讯作者：
A. Gero;A. Pitman;G. Narisma;C. Jacobson;R. Pielke
影响因子：
3.2
作者：
J. Srinivasan;G. Smith
通讯作者：
J. Srinivasan;G. Smith
影响因子：
2.8
作者：
Yonghong Hu;G. Jia;C. Pohl;Qiang Feng;Yuting He;Hao Gao;R. Xu;J. Genderen;Jinming Feng
通讯作者：
Yonghong Hu;G. Jia;C. Pohl;Qiang Feng;Yuting He;Hao Gao;R. Xu;J. Genderen;Jinming Feng
影响因子：
3.2
作者：
T. Yabe;R. Tanaka;T. Nakamura;F. Xiao
通讯作者：
T. Yabe;R. Tanaka;T. Nakamura;F. Xiao