Download Learnerz IAS app from the Play Store now! Download



Heat Islands UPSC NOTE

 Why in news

  • In a paper published in Science, researchers from the University of Chicago detail a new wearable fabric that can help urban residents survive the worst impacts of massive heat caused by global climate change, with applications in clothing, building and car design, and food storage.

  • Urban areas usually experience the urban heat island effect, that is, they are significantly warmer than surrounding rural areas. 

  • The temperature difference is usually larger at night than during the day, and is most apparent when winds are weak, under block conditions, noticeably during the summer and winter

Its Implications

  • In tests sun, the new material kept:

    • 2.3°C cooler than broadband emitter fabric used for outdoor endurance sports.

    • 8.9°C cooler than commercialised silk commonly used for summer clothing.

  • The team hopes this material will help reduce heat-related hospitalisations and deaths.

  • Existing cooling fabrics for outdoor sports reflect the sun’s light diffusely to avoid blinding onlookers.

  • In urban heat islands, thermal radiation from buildings and pavement adds to the heat.

  • 97% of clothes are heated by thermal radiation from sides and below, which broadband emitter fabric does not combat.

  • Many materials that perform well in lab tests are ineffective in real urban heat conditions like those in Arizona, Southeast Asia, and China during massive heat waves.

  • Applications of the new fabric extend beyond clothing:

  • A thicker version, protected by polyethylene, could be used on buildings or cars to lower internal temperatures and reduce air conditioning costs and carbon impact.

  • The material could also be used for transporting and storing milk and other perishable foods, reducing refrigeration's environmental impact.



Amritsar,1,April 2024,301,Art & Culture,1,August 2023,251,Courses,7,Daily Current Affairs,48,December 2023,189,Disaster Management,2,Environment and Ecology,193,February 2024,228,Foundation Course,1,GDP,1,GEMS Club,1,GEMS Plus,1,Geography,191,Govt Schemes,2,GS 2,1,GS1,6,GS2,68,GS3,26,GST,1,History,11,Home,3,IAS Booklist,1,Important News,71,Indian Economy,173,Indian History,10,Indian Polity,202,International Organisation,12,International Relations,143,Invasive Plant,1,January 2024,240,July 2023,281,July 2024,230,June 2022,6,June 2023,268,June 2024,324,March 2024,238,May 2022,17,May 2024,330,Mentorship,2,November 2023,169,October 2023,203,Places in News,2,Science & Technology,135,Science and Technology,95,September 2023,205,UPSC CSE,111,
Learnerz IAS | Concept oriented UPSC Classes in Malayalam: Heat Islands UPSC NOTE
Heat Islands UPSC NOTE
Learnerz IAS | Concept oriented UPSC Classes in Malayalam
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS PREMIUM CONTENT IS LOCKED STEP 1: Share to a social network STEP 2: Click the link on your social network Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy Table of Content