The long-term variability in minimum and maximum temperature trends and heat island of Lahore city, Pakistan

Department of Earth Sciences, University of Sargodha, Sargodha – Pakistan Department of Geography, University of the Punjab, 54000 Lahore, Pakistan Department of Geography, Forman Christian College, A chartered University, Lahore – Pakistan *For correspondence: shsajjad@hotmail.com , Phone: +92 304 2611126 ABSTRACT: The second largest city of Pakistan is Lahore which has population of 10 million. The purpose of this research work is to study the annual and seasonal trends of surface temperature of two stations of Lahore one located in center of the city and another one at airport of Lahore about 10 km away from the first site. The temperature data of minimum and maximum collected from Pakistan Meteorological Department (PMD) was analysed by using linear regression. The results show that at both stations minimum temperature is increasing more than maximum temperature. While maximum temperature at both station is not increasing significantly. The highest increase in minimum temperature is measured in spring season. Key word: urbanization, local climate, population change, PMD, Urban Heat Island