The city of Guwahati is the prime hub for the entire north east India. It is one of the fastest growing cities of India at present day. The immigration of a huge amount of population from the surrounding states is leading to its urban extension. The major growth of the city initiated in the previous decade and is consistent and progressive throughout. A formation and growth of Urban Heat Island over the city of Guwahati is well evident. It is also understood that urbanization has led to the substantial growth of the city of Guwahati, making it the largest in north east India. This study aims the growth of UHI over the city for a period of 10 years from the year 2005 to 2015. It also depicts the effect of local meteorological parameters like temperature and precipitation acquired using automatic weather stations (AWS) and ground based stations. A temporal assessment of the LST (Land Surface Temperature) using MODIS (Moderate Resolution Imaging Spectroradiometers) data aids the growth of UHI over the city in terms of both magnitude and extent. The geospatial investigation shows a growth of UHI magnitude from 4.6°C in 2005 to 5.8°C in 2010 and also growth in its lateral extent from 62 km2 to 66 km2. The UHI magnitude in 2015 shows a value of 5.8 °C, the possible reason is due to cooling effect of the city as evident from the precipitation ground based data.
An Urban Heat Island magnitude study over the city of Guwahati-An integration of Remote Sensing and Ground based approach
BONAFONI, Stefania
2016
Abstract
The city of Guwahati is the prime hub for the entire north east India. It is one of the fastest growing cities of India at present day. The immigration of a huge amount of population from the surrounding states is leading to its urban extension. The major growth of the city initiated in the previous decade and is consistent and progressive throughout. A formation and growth of Urban Heat Island over the city of Guwahati is well evident. It is also understood that urbanization has led to the substantial growth of the city of Guwahati, making it the largest in north east India. This study aims the growth of UHI over the city for a period of 10 years from the year 2005 to 2015. It also depicts the effect of local meteorological parameters like temperature and precipitation acquired using automatic weather stations (AWS) and ground based stations. A temporal assessment of the LST (Land Surface Temperature) using MODIS (Moderate Resolution Imaging Spectroradiometers) data aids the growth of UHI over the city in terms of both magnitude and extent. The geospatial investigation shows a growth of UHI magnitude from 4.6°C in 2005 to 5.8°C in 2010 and also growth in its lateral extent from 62 km2 to 66 km2. The UHI magnitude in 2015 shows a value of 5.8 °C, the possible reason is due to cooling effect of the city as evident from the precipitation ground based data.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
