{"id":31443,"date":"2025-03-24T05:42:53","date_gmt":"2025-03-24T00:12:53","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=31443"},"modified":"2025-04-16T12:00:33","modified_gmt":"2025-04-16T06:30:33","slug":"urban-heat-island-uhi","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/urban-heat-island-uhi\/","title":{"rendered":"Urban Heat Island (UHI)"},"content":{"rendered":"<h2>Urban Heat Island Latest News<\/h2>\n<p>The Telangana Socio-Economic Outlook 2025 report reveals that Hyderabad is experiencing increased nighttime heat stress due to the urban heat island effect.<\/p>\n<h2>About Urban Heat Island<\/h2>\n<ul>\n<li>The UHI effect is a climatic phenomenon <strong>observed in urban areas<\/strong>, where <strong>temperatures <\/strong>are <strong>significantly higher than<\/strong> in <strong>surrounding rural areas.\u00a0<\/strong><\/li>\n<li>This discrepancy in temperature is <strong>attributed to human activities and urban development,<\/strong> which alter land surfaces and environments.\u00a0<\/li>\n<li>It is the<strong> result of an accumulation of factors<\/strong>, the main ones being:\u00a0\n<ul>\n<li><strong>Reduced green spaces and natural soils:<\/strong> Urbanization contributes to shrinking vegetation in cities (trees, lawns, etc.), resulting in insufficient shading and evapotranspiration, a process that naturally cools the air.\u00a0<\/li>\n<li><strong>Density of buildings and infrastructure:<\/strong> Concrete or asphalt buildings and roads store more heat than vegetated areas, thus exacerbating urban warming.\u00a0<\/li>\n<li><strong>Urban layout: <\/strong>narrow streets and tall buildings create urban canyons where warm air is less able to circulate, amplifying the effect of UHIs.\u00a0<\/li>\n<li><strong>Heat released by human activities: <\/strong>Road traffic, air conditioning systems, and industrial activities generate heat, which is then trapped by greenhouse gases (such as carbon dioxide) that act as a barrier.<\/li>\n<li>The combined effect of all these factors, together with <strong>global warming<\/strong> and increasingly high temperatures, <strong>leads to the development of this urban microclimate.<\/strong><\/li>\n<\/ul>\n<\/li>\n<li>The <strong>term <\/strong>\u201cUrban Heat Island\u201d <strong>originates from the visual representation of temperature distribution maps<\/strong>, where urban areas are depicted as \u201cislands\u201d of higher temperatures amidst cooler rural \u201cseas.\u201d\u00a0<\/li>\n<li>The <strong>heat <\/strong>of the sun is <strong>absorbed during the day, <\/strong>only to be <strong>released very slowly at night,<\/strong> which <strong>limits the cooling of the air, <\/strong>thus contrasting with the cooling in the outlying rural areas.\u00a0<\/li>\n<li><strong>Temperature differences at night can be as much as 12\u00b0C.\u00a0<\/strong><\/li>\n<\/ul>\n<h2>Urban Heat Island FAQs<\/h2>\n<p><strong>Q1<\/strong>. What is the concept of urban heat island?<\/p>\n<p><strong>Ans<\/strong>. An urban heat island, or UHI, is a metropolitan area that&#8217;s a lot warmer than the rural areas surrounding it.<\/p>\n<p><strong>Q2<\/strong>. How does vegetation help in reducing the UHI effect?<\/p>\n<p><strong>Ans<\/strong>. By providing shade and promoting evapotranspiration.<\/p>\n<p><strong>Q3<\/strong>. What role does urban layout play in intensifying the UHI effect?<\/p>\n<p><strong>Ans<\/strong>. Tall buildings and narrow streets trap heat, creating urban canyons.<\/p>\n<p><strong>Source<\/strong>: <a href=\"https:\/\/timesofindia.indiatimes.com\/city\/hyderabad\/hyd-trapped-in-heat-island-sizzles-at-night\/articleshow\/119388645.cms\" target=\"_blank\" rel=\"nofollow noopener\">TOI<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Urban Heat Island (UHI) effect is a climatic phenomenon observed in urban areas, where temperatures are significantly higher than in surrounding rural areas. <\/p>\n","protected":false},"author":5,"featured_media":31444,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-31443","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/31443","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=31443"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/31443\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/31444"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=31443"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=31443"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=31443"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}