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Assessment of Urban Heat Island (UHI) using Remote Sensing and GIS
| Content Provider | Semantic Scholar |
|---|---|
| Author | Anwar, Huma |
| Copyright Year | 2016 |
| Abstract | This study assesses the Urban Heat Island (UHI) effect and evaluates the impact of urban/suburban areas in Lahore District on its land surface temperature using Remote Sensing and GIS techniques. The satellite brightness temperature information derived from the medium resolution satellite LANDSAT 5 (Thematic Mapper) is analyzed and compared with the land use/land cover types acquired by classifying the image. The results reveal that urban heat island in Lahore District is significant, with average Land surface temperature values ranging from 23C to 44C, and maximum urban/non-urban temperature difference reaching 5C. The high built-up area exhibits the maximum surface temperature ranges from 31 to 44C compared to other land use types. The relationship between thermal behavior and NDVI is also analyzed and negative correlation is identified by the results from the extracted surface temperature and NDVI from Landsat. This suggests that vegetation is the primary determinant controlling the spatial distribution of land surface heat. An effort to compare the population density and air pollution parameters with surface temperature is also made and the air pollution concentration is considered in relation with urban areas of high temperature and high population density. GJHSS-B Classification : FOR Code: 291003 AssessmentofUrbanHeatIslandUHIusingRemoteSensingandGIS Strictly as per the compliance and regulations of: By Aneeqa Azeem, Muhammad A Butt , Khadija Nisar & Huma Anwar © 2016. Aneeqa Azeem, Muhammad A Butt , Khadija Nisar & Huma Anwar. This is a research/review paper, distributed under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License http://creativecommons.org/licenses/bync/3.0/), permitting all non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. University of Engineering and Technology, Pakistan Assessment of Urban Heat Island (UHI) using Remote Sensing and GIS AbstractThis study assesses the Urban Heat Island (UHI) effect and evaluates the impact of urban/suburban areas in Lahore District on its land surface temperature using Remote Sensing and GIS techniques. The satellite brightness temperature information derived from the medium resolution satellite LANDSAT 5 (Thematic Mapper) is analyzed and compared with the land use/land cover types acquired by classifying the image. The results reveal that urban heat island in Lahore District is significant, with average Land surface temperature values ranging from 23oC to 44oC, and maximum urban/non-urban temperature difference reaching 5oC. The high built-up area exhibits the maximum surface temperature ranges from 31 to 44oC compared to other land use types. The relationship between thermal behavior and NDVI is also analyzed and negative correlation is identified by the results from the extracted surface temperature and NDVI from Landsat. This suggests that vegetation is the primary determinant controlling the spatial distribution of land surface heat. An effort to compare the population density and air pollution parameters with surface temperature is also made and the air pollution concentration is considered in relation with urban areas of high temperature and high population density. This study assesses the Urban Heat Island (UHI) effect and evaluates the impact of urban/suburban areas in Lahore District on its land surface temperature using Remote Sensing and GIS techniques. The satellite brightness temperature information derived from the medium resolution satellite LANDSAT 5 (Thematic Mapper) is analyzed and compared with the land use/land cover types acquired by classifying the image. The results reveal that urban heat island in Lahore District is significant, with average Land surface temperature values ranging from 23oC to 44oC, and maximum urban/non-urban temperature difference reaching 5oC. The high built-up area exhibits the maximum surface temperature ranges from 31 to 44oC compared to other land use types. The relationship between thermal behavior and NDVI is also analyzed and negative correlation is identified by the results from the extracted surface temperature and NDVI from Landsat. This suggests that vegetation is the primary determinant controlling the spatial distribution of land surface heat. An effort to compare the population density and air pollution parameters with surface temperature is also made and the air pollution concentration is considered in relation with urban areas of high temperature and high population density. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://globaljournals.org/GJHSS_Volume16/1-Assessment-of-Urban.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
