Heat balance analysis in Taiwanese cities using aster and formosat-2 data

Soushi Kato, Cheng Chien Liu, Po Li Chen, Chen Yi Sun, Hsin Yi Tsai, Yasushi Yamaguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In order to compare the influences of urbanization to urban heat island in different cities, surface heat balances on three urban areas in Taiwan, namely Kaohsiung City, Taichung City, and Tainan City, were estimated from remote sensing and ground meteorological data. We estimated heat fluxes by using ASTER data with surface classification map by Formosat-2. Because the orbit of ASTER and positions of the three cities are almost parallel, we could compare the surface heat balances of the study areas for the same day. The surface heat balance of each city shows obvious differences according to their characteristics of city scale, usage, and geographic conditions. The net radiation ranges showed similar values in all of the study areas because the three cities are located close to each other and the net radiation is primarily due to solar radiation. On the other hand, in Tainan City, which is the smallest in the three cities, sensible heat flux was 60 to 70 % of those in Taichung City and Kaohsiung City. Moreover, Taichung City, located in a basin, shows relatively larger sensible heat flux than Kaohsiung City caused by a temperature decrease during the night before the observation. Storage heat flux clearly shows the influence of anthropogenic heat discharge in some industrial areas in Kaohsiung City and Taichung City. Meanwhile, smaller urban function induces moderate distribution of storage heat flux in Tainan City. These results imply that the terrain around the certain city also affects the heat balance significantly as well as artificial influence.

Original languageEnglish
Title of host publication30th Asian Conference on Remote Sensing 2009, ACRS 2009
Pages1739-1744
Number of pages6
Publication statusPublished - 2009 Dec 1
Event30th Asian Conference on Remote Sensing 2009, ACRS 2009 - Beijing, China
Duration: 2009 Oct 182009 Oct 23

Publication series

Name30th Asian Conference on Remote Sensing 2009, ACRS 2009
Volume3

Other

Other30th Asian Conference on Remote Sensing 2009, ACRS 2009
CountryChina
CityBeijing
Period09-10-1809-10-23

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

Fingerprint Dive into the research topics of 'Heat balance analysis in Taiwanese cities using aster and formosat-2 data'. Together they form a unique fingerprint.

Cite this