TY - JOUR
T1 - Comparison of surface heat balance in three cities in Taiwan using Terra ASTER and Formosat-2 RSI data
AU - Kato, Soushi
AU - Liu, Cheng Chien
AU - Sun, Chen Yi
AU - Chen, Po Li
AU - Tsai, Hsin Yi
AU - Yamaguchi, Yasushi
N1 - Funding Information:
This study was supported by the Landmark Program of the National Cheng Kung University under Contract No. B-023 and by the National Science Council of the Republic of China, Taiwan , through grant number NSC 99-2611-M-006-002 . This study used ASTER data provided by ERSDAC and ASTER data beta processed by the AIST GEO Grid from ASTER data owned by the Ministry of Economy, Trade and Industry, Japan.
PY - 2012
Y1 - 2012
N2 - In order to investigate the influences of the city scale, usage, topography, and climate on surface heat balance, the authors compared the surface heat balance for three urban areas in Taiwan, namely, Kaohsiung City, Taichung City, and Tainan City, estimated using ASTER and Formosat-2 data. The net radiation was in a similar range in all three study areas because the cities are in close proximity to each other. Tainan City released 60-70% of the sensible heat flux of the other cities because of its smaller size. Taichung City, which is located in a basin, exhibited the largest sensible heat flux, due to the radiation cooling during the night before the observation. Anthropogenic heat discharge clearly decreased the storage heat flux in certain industrial areas in Kaohsiung City and Taichung City, while the small scale urban functions moderated the variation of storage heat flux in Tainan City. These results imply that the terrain around a given city as well as the scale of urban activity significantly affect the heat balance in the cities.
AB - In order to investigate the influences of the city scale, usage, topography, and climate on surface heat balance, the authors compared the surface heat balance for three urban areas in Taiwan, namely, Kaohsiung City, Taichung City, and Tainan City, estimated using ASTER and Formosat-2 data. The net radiation was in a similar range in all three study areas because the cities are in close proximity to each other. Tainan City released 60-70% of the sensible heat flux of the other cities because of its smaller size. Taichung City, which is located in a basin, exhibited the largest sensible heat flux, due to the radiation cooling during the night before the observation. Anthropogenic heat discharge clearly decreased the storage heat flux in certain industrial areas in Kaohsiung City and Taichung City, while the small scale urban functions moderated the variation of storage heat flux in Tainan City. These results imply that the terrain around a given city as well as the scale of urban activity significantly affect the heat balance in the cities.
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U2 - 10.1016/j.jag.2012.02.007
DO - 10.1016/j.jag.2012.02.007
M3 - Article
AN - SCOPUS:84864498180
SN - 1569-8432
VL - 18
SP - 263
EP - 273
JO - International Journal of Applied Earth Observation and Geoinformation
JF - International Journal of Applied Earth Observation and Geoinformation
IS - 1
ER -