Use of “Local Climate Zones” for Detecting Urban Heat Island: A Case Study of Kolkata Metropolitan Area, India

Abstract The land surface temperature (LST) increases both spatially and in magnitude as a result of rapid urbanization at the expense low radiative surface. This process modifies urban climate which is attributable to phenomenon recognized Urban Heat Island (UHI). By estimating LST, satellite remote sensing offers cost-effective time-saving methodology for spatio-temporal analyses UHI. limitation, however, that rural are becoming outmoded conceptions landscape classification consequence high population density, particularly countries like India. In densely populated regions, countryside cities no longer differentiated by clear urban-rural divide. Thus, traditional study UHI can be enhanced adaptation newly developed “Local Climate Zones” (LCZ) characterization scheme based on building types cover characteristics. LCZ mapping an excellent method categorizing areas associated with most perceptible change areas, namely paper aims identify LCZs dynamics over decade from 2010 2020 Kolkata Metropolitan Area (KMA), largest agglomeration eastern has divided landscapes into 17 conventional classes, 10 built-up 7 classes affect air screen height 1-2 meters above ground. Each distinguishable another its thermal property. will help understand nature local climates. It thus become comparatively simple estimate Intensity (UHII) scheme. explains typical features each KMA accomplishes discussion efficiency UHII classes.