Green strategies for local urban heat island in indian cities

It is predicted that by 2050, 68% of the world's population would reside in urban regions, up from the current percentage of 55% (UN Desa, 2018). In developing nations, the urban population is expanding at a quicker rate than the rural population due to more possibilities and a higher standard of living. This results in urbanisation, which modifies the local ecology and causes the urban heat island effect (UHI). Chennai, the fourth biggest megacity in India, is home to the Indian automobile industry and 11.5 million inhabitants. UHI in Chennai is increased by concretization, urbanisation, population expansion, and loss of green cover, all of which contribute in various ways to the suffering of the city and its inhabitants. Due to the Urban heat island (UHI) effect, cities and towns are often warmer than rural locations. It has several negative effects on health and the environment. This can be reduced using mitigation strategies. This research aims to identify UHI mitigation measures, their efficacy, and their resilience in order to make suggestions for future large-scale implementation of such strategies. First Literature discusses the formation of urban heat islands, as well as its cause, impacts, and mitigating techniques. Second, the heavily populated Indian city of Chennai was chosen for the analysis and identification of the local urban heat island using several methods. In order to reduce the heat on a micro level, mitigating solutions were provided, which may be extended to a macro level in the future through expert recommendations.

Prognoositakse, et aastaks 2050 on migreerunud praeguse 55% asemel linnadesse juba -68% elanikkonnast (UN DESA, 2018). Arengumaades, nagu India, toimub linnastumine kiiremini võrreldes maal elava elanikkonnaga, kuna linnas on elamistingimused paremad. Selle tulemuseks on linnastumine, mis muudab kohalikku ökoloogiat ja põhjustab linnasoojussaarte mõju (UHI). 11,5 miljoni elanikuga Chennai on elanike arvult neljas linna Indias aga liikluse mastaapsuse seiskohast koguni teisel kohal. See süvendab linnastumist ja muudab kohalikku keskkonda, mis põhjustab soojussaarte efekti. Soojussaare efekti mõju tõttu on linnad kuumemad kui maapiirkonnad ning sellel on mitmeid tervisele ja keskkonnale kahjulikke mõjusid. esimestes kirjandusülevaadetes hinnati kuumasaare efekti, selle põhjuseid ja võimalikke meetmeid selle leevendamiseks. Kirjanduse ülevaates hinnati soojussaare efekti mõju, selle põhjuseid ja leevendamiseks võimalikke meetmeid. Teiseks valiti kohaliku linna soojussaare analüüsiks ja tuvastamiseks mitme meetodi abil tihedalt asustatud India linn Chennai. Väljatöötatud lahenduse täiustamisega on võimalik minimeerida soojussaare efekti mikro- ja makroskaalal.