Page 251 - 《高原气象》2021年第5期

高 原 气 象 40 卷
1212

Evaluation of the Urban Heat Island Effect of Sponge City in Chongqing

using Satellite Remote Sensing Data and Numerical Simulation

2
ZHU Haonan ，LIU Xiaoran ，Sun Jia ，Zhou Jie ，Cheng Bingyan ，Zhang Ning 3
1
1
1
1
（1. Chongqing Climate Center，Chongqing 401147，China；
2. Chongqing Institute of Meteorological Sciences，Chongqing 401147，China；
3. Department of Atmospheric Science，Nanjing University，Nanjing 210093，Jiangsu，China）
Abstract：To evaluate the influence of sponge city planning on urban heat island effect，space-time characteris‐
tics of an urban heat island index，which defined by a complex terrain considered City Cluster Algorithm and cal‐
culated using land surface temperature data from MODIS satellite remote sensing，of a constructing urban area
with sponge city planning in Chongqing，China has been compared to constructing and constructed urban areas
with traditional city planning. Meanwhile，sensitive tests of different land use planning have also been imple‐
mented using multi-scale numerical simulation. The analysis results show that the heat island effect in new urban
areas with sponge city planning mainly comes from the heat island radiation of the surrounding cities，and com‐
pared to traditional cities，the average heat island intensity is smaller and the trend of strong heat island growing
is relatively moderate. Results of the numerical simulation indicate that sponge city can has lower near-surface
temperature and better ventilation by using more reasonable land use planning，which ultimately appears as a re‐
duction of urban heat island effect.
Key words：Sponge city；urban heat island；satellite remote sensing data；numerical simulation