Urban Heat Island Characterization and Isotherm Mapping Using Geo-Informatics Technology in Ahmedabad City, Gujarat State, IndiaReport as inadecuate




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India has witnessedtremendous industrialization in the last five decades. This has led tomigration of masses from rural areas towards cities for jobs and businesses.With increase in the population, the demand for residences has also increasedwhich has escalated growth of slum areas and haphazard planning in suburbs.City of Ahmedabad is one such urban metropolis in the state of Gujarat, India.Being the financial capital of Gujarat, population of the city has increasedmany folds since 1980s. Congested and unsustainable planning and increasing inthe emissions from industries and vehicles in certain areas of the city havegiven birth to many climatic issues. One of these major problems is the UrbanHeat Island UHI phenomena. This has increased the temperature by four to fivedegrees and has also severely affected air quality. Satellite based Remotesensing data can provide temperature information of various land use classes.Remote Sensing data along with in-situ surface measurements can help toidentify urban heat island intensities and hotspots in the cities. A study onheat island characterization and isotherm mapping was taken up in AhmedabadCity. In the present study, Surface Heat Island SHI effect is studied usingsatellite data along with field measurements. Thermal infrared data fromLandsat ETM band-6 have been effectively used for monitoring temperaturedifferences of various land use classes in urban areas. The study aims toidentify and study the urban hot spots using the data from LANDSAT-5 and fielddata collected using IR Gun in various zones of Ahmedabad City. The results ofthis study indicated that the surface temperature near industrial areas anddense urban areas was higher as compared to other suburban areas in theAhmedabad City.

KEYWORDS

Surface Temperature, Urban Heat Island UHI Phenomena, Hot Spots, Landsat TM, Thermal Infrared, Isotherms, Industrial Area, IR Gun, Geo-Informatics

Cite this paper

Joshi, R. , Raval, H. , Pathak, M. , Prajapati, S. , Patel, A. , Singh, V. and Kalubarme, M. 2015 Urban Heat Island Characterization and Isotherm Mapping Using Geo-Informatics Technology in Ahmedabad City, Gujarat State, India. International Journal of Geosciences, 6, 274-285. doi: 10.4236-ijg.2015.63021.





Author: Ram Joshi1, Hardik Raval1, Maharshi Pathak1, Sumit Prajapati2, Ajay Patel2, Vijay Singh2, Manik H. Kalubarme2*

Source: http://www.scirp.org/



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