This paper first uses data from USGS (Retrieved from NOAA AVHRR) in 1993 and MODIS in 2003 to study the urbanization in Beijing, and then uses both data as the input to the urbanized CoLM land surface model to discuss its effect on surface energy balance etc. The result indicates that Beijing was experiencing a rapid urbanization process in the research period. As the result of the urbanization, the vegetation cover decreases and the impervious surface area increases. The radioactive temperature is also increased according to the heat island effect and the surface wetness is decreased. For the effects of surface energy balance, as the result of decreases of evapotranspiration, the latent heat flux decreases and surface sensible heat flux increases and the Bowen ratio increases in the urban areas too, but the total sensible heat flux is not increased.

Date Published: 24 November 2009
PDF: 9 pages
Proc. SPIE 7513, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Process Technology, 75130L (24 November 2009); doi: 10.1117/12.837665

Published in SPIE Proceedings Vol. 7513:
2009 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Process Technology
Toru Yoshizawa; Ping Wei; Jesse Zheng, Editor(s)