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Urbanization and the thermal environment of Chinese and US-American cities

MPG-Autoren
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Fraedrich,  Klaus F.
Max Planck Fellows, MPI for Meteorology, Max Planck Society;

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Zitation

Cai, D., Fraedrich, K. F., Guan, Y., Guo, R., & Zhang, C. (2017). Urbanization and the thermal environment of Chinese and US-American cities. Science of the Total Environment, 589, 200-211. doi:10.1016/j.scitotenv.2017.02.148.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002C-C7BF-C
Zusammenfassung
Urbanization induced change of the thermal environment of cities is analyzed using MODIS LST and DMSP/OLS nighttime light data sets (2001. -. 2012) to a) extend previous studies on individual megacities to a city size spectrum; b) investigate the heterogeneous surface thermal environment associated with the urbanization processes in terms of nighttime light intensity and city size; and c) provide insights in predicting how urban ecosystems will respond to urbanization for both a developing and a developed country (China and US-America), and on global scale. The following results are obtained: i) Nighttime light intensities of both countries (and globally) increase with increasing city size. ii) City size dependent annual or seasonal mean temperature tendencies show the urban effect by decreasing daytime and increasing nighttime mean temperatures (particularly in China) while variability can be related to climate fluctuations. iii) Daytime/nighttime seasonal warming tendencies (inferred from regional downscaling within city clusters) show the high light intensity regions to be stable while in low light intensity regions fluctuations prevail. © 2017 Elsevier B.V.