Summer surface temperature distribution analysis of Mykolayiv city based on the Landsat series thermal infrared data

Abstract

The surface temperature distribution analysis of the condition and characteristics within one of the industrial centers of the south of Ukraine, Mykolaiv, from 1985 to 2018 was carried out on the basis of Landsat thermal infrared data processing. Temporal development of surface temperature distribution was investigated both for the entire territory of the city and for individual profiles crossing the diverse landscape and functional city areas. Significant surface temperature distribution divergences during temporal variations in different, but steady landscapes and functional conditions have been stated. Abnormally high temperatures are found within industrial zones, reaching 40–43оC. The water temperatures of the Southern Bug, Ingula and Lake Liski are the lowest and are determined by the amount of water mass. The highest temperature oscillation (up to 15oC) during the research period, was recorded on the artificially aggradated sands within floodplain of the Southern Bug, after the residential building “Namyv” was built and within the “Zhovtneve” reservoir, after its draining. The main types of residential development of the city — a medium, low-rise buildings and private cottages surrounded by trees and lawns, forming a stable temperature background. Limited distribution of impermeable surfaces, significant planting, intensive watering resulted in the formation of a negative thermal anomaly within the city, a peculiar cool oasis against a hot background of steppe agro-landscapes.