ANALISIS HUBUNGAN URBAN HEAT ISLAND TERHADAP INDEKS KEKERINGAN METEOROLOGIS DI DAERAH ISTIMEWA YOGYAKARTA

Abstract

Uncontrolled urbanization can lead to the rapid growth of residential and industrial areas. It causes an increase in surface temperature and accelerates climate change. One of the consequences of climate change is the occurrence of meteorological drought. The purpose of this research is to determine the relationship between the Urban Heat Island (UHI) and meteorological drought based on the Standardized Precipitation Index (SPI). UHI is calculated based on processing band-10, band-5, and band-4 on Landsat-8 imagery and produces the value of Land Surface Temperature (LST) and Normalized Difference Vegetation Index (NDVI). The SPI value is calculated based on the 3-month SPI calculation (SPI-3). The relationship between UHI and SPI-3 was analyzed using the Pearson correlation method. The results show a strong correlation between UHI and SP-3I, with Pearson's value of 0.87 in the capital of Special Region Yogyakarta. A moderate correlation between UHI and SPI occurs in Kulon Progo, Bantul, and Gunung Kidul Regency. The relationship between UHI and SPI-3 is strong for urban areas. UHI can be a new additional parameter in terms of meteorological drought monitoring. Further research is still needed to see which drought index can better represent the value of UHI.