Spatio-temporal Assessment of Land Use/ Land Cover Dynamics and Urban Heat Island of Jaipur City using Satellite Data
Other literature type
(issn: 2194-9034, eissn: 2194-9034)
Urban Heat Island (UHI) refers to the phenomena of higher surface temperature occurring in urban areas as compared to the
surrounding countryside attributable to urbanization. Spatio-temporal changes in UHI can be quantified through Land Surface
Temperature (LST) derived from satellite imageries. Spatial variations in LST occur due to complexity of land surface – combination
of impervious surface materials, vegetation, exposed soils as well as water surfaces. Jaipur city has observed rapid urbanization over
the last decade. Due to rising population pressure the city has expanded considerably in areal extent and has also observed substantial
land use/land cover (LULC) changes. The paper aims to determine changes in the LST and UHI phenomena for Jaipur city over the
period from 2000 to 2011 and analyzes the spatial distribution and temporal variation of LST in context of changes in LULC.
Landsat 7 ETM+ (2000) and Landsat 5 TM (2011) images of summer season have been used. Results reveal that Jaipur city has
witnessed considerable growth in built up area at the cost of greener patches over the last decade, which has had clear impact on
variation in LST. There has been an average rise of 2.99 °C in overall summer temperature. New suburbs of the city record 2° to 4 °C
increase in LST. LST change is inversely related to change in vegetation cover and positively related to extent of built up area. The
study concludes that UHI of Jaipur city has intensified and extended over new areas.