TY - JOUR JF - jgs JO - jgs VL - 19 IS - 52 PY - 2019 Y1 - 2019/3/01 TI - Investigation of changes in surface urban heat-island (SUHI) in day and night using multi-temporal MODIS sensor data products (Case Study: Tehran metropolitan) TT - تحلیل تغییرات جزیره حرارتی سطوح شهری در روز و شب با استفاده از محصولات چند زمانه سنجنده مادیس (مطالعه موردی: کلانشهر تهران) N2 - The term urban heat island (UHI), described the phenomenon of climate change in urban areas compared with surrounding rural areas. UHI effects include: increasing in energy and water consumption, air pollution expansion and interfering in thermal comfort. Surface urban heat island (SUHI) contains patterns of land surface temperature (LST) in urban areas that has interaction with UHI in urban canopy layer and urban boundary layer and investigate with thermal remote sensing. SUHI has diurnal and seasonal variations so requires multi-temporal data to analysis SUHI. In this study, the multi-temporal MODIS (Aqua and Terra) data product were used to analyze the SUHI in day and night in Tehran metropolitan. Physical and biophysical surface properties such as: land cover/land use (LULC), elevation, albedo, vegetation index (NDVI) and impervious surfaces index (NDBI) were used to interpretation of the LST and SUHI changes. The results showed that SUHI in Tehran, has spatial-temporal diurnal and seasonal variation. So that during warm days the surface urban cool island (SUCL) is formed in Tehran. At night times, SUHI index values was different between 2 and 5 ° C (maximum in the spring). The results also showed that different of land cover thermal properties, albedo and elevation was the most important factors is the diurnal changes of SUHI while phonological changes of vegetation and albedo, was the most important factors in seasonal changes of SUHI. SP - 113 EP - 128 AU - Hashemi Darebadami, Sirous AU - Darvishi Boloorani, Ali AU - AlaviPanah, Seyed Kazem AU - maleki, Mohammad AU - Bayat, Reza AD - University of tehran KW - Surface urban heat island KW - surface urban Cool Island KW - MODIS products KW - Physical and biophysical surface properties. UR - http://jgs.khu.ac.ir/article-1-2745-en.html DO - 10.29252/jgs.19.52.113 ER -