Publications

Nair, US; Phillips, C; Dasgupta, S; Mitra, C (2023). Impact of growth of a medium-sized Indian coastal city on urban climate: A case study using data fusion and analytics. URBAN CLIMATE, 49, 101525.

Abstract
In India, unlike mega cities, little is known about how the growth of small and medium-sized cities (SMSC) impacts urban climate. Further, such impacts are amplified in coastal settings. We use data fusion and analytics to study how the growth of Thiruvananthapuram, a typical medium-sized coastal city in India, modifies the urban climate. The datasets used are National Aeronautics and Space Administration (NASA) Moderate Resolution Imaging Spectroradiometer (MODIS) land products, NASA Modern-Era Retrospective analysis for Research and Applications (MERRA-2) and Indian Meteorological Department surface observations contained within the National Oceanic and Atmospheric Administration (NOAA) global compilation of in-situ obser-vations. The study found a similar to 48% increase in urban and built-up land cover over the last two decades, causing an increase in albedo, surface roughness and a decrease in emissivity and moisture availability. Decreasing moisture availability most affected air temperature, with urban growth adding to large-scale climatic trends of increasing monthly mean daily maximum (+1 degrees C), minimum (+0.4 degrees C) and average temperatures (+0.22 degrees C). Sea-breeze circulation strengthened in response to increasing coastal urbanization and the inland propagation modified with increased convergence and (potentially) rainfall, near the coast.

DOI:
10.1016/j.uclim.2023.101525

ISSN: