Optimize IAS
  • Home
  • About Us
  • Initiatives
    • Daily Practice Sheets
    • Daily Prelims Notes
    • Prelims Power Play
    • Friday Factly
    • Sunday Essay Sadhna
    • Mains Master Notes
    • Public Administration Answer Writing
  • Courses
    • Optima 2020
    • Optima 2020 (Mains)
    • Laqshya 2021 / Laqshya 2021 Advance (Prelims)
    • Santosh Sir 700+ Mains Mentorship Program
    • Ethics Master Class
    • Essay Master Class
    • Our Video Courses
  • PROVEN STRATEGY
    • Prelims Strategy
    • Mains Strategy
    • Interview Strategy
    • Sunday Success Sutra
  • Resources
    • DPS Compilation
    • DPN Compilation
    • Friday Factly Compilation
    • Sunday Essay Sadhna Compilation
    • PSIR Notes
    • General Studies Notes
    • UPSC Prelims Previous Year Papers
    • UPSC Mains Previous Year Papers
  • Contact Us
  • Home
  • About Us
  • Initiatives
    • Daily Practice Sheets
    • Daily Prelims Notes
    • Prelims Power Play
    • Friday Factly
    • Sunday Essay Sadhna
    • Mains Master Notes
    • Public Administration Answer Writing
  • Courses
    • Optima 2020
    • Optima 2020 (Mains)
    • Laqshya 2021 / Laqshya 2021 Advance (Prelims)
    • Santosh Sir 700+ Mains Mentorship Program
    • Ethics Master Class
    • Essay Master Class
    • Our Video Courses
  • PROVEN STRATEGY
    • Prelims Strategy
    • Mains Strategy
    • Interview Strategy
    • Sunday Success Sutra
  • Resources
    • DPS Compilation
    • DPN Compilation
    • Friday Factly Compilation
    • Sunday Essay Sadhna Compilation
    • PSIR Notes
    • General Studies Notes
    • UPSC Prelims Previous Year Papers
    • UPSC Mains Previous Year Papers
  • Contact Us

Artic Warming

  • June 24, 2020
  • Posted by: admin1
  • Category: DPN Topics
No Comments
Print Friendly, PDF & Email

Subject: Environment

Context:

The Arctic Circle has recorded likely all-time high temperatures reaching over 38 degrees Celsius in the Siberian town of Verkhoyansk which seem to have been 18 degree Celsius higher than normal in June.

Concept:

  • The Arctic’s extreme warming, known as Arctic amplification or polar amplification, may be due to three factors.
  • One, the region’s reflectivity, or albedo is changing as the world warms.
  • If the sea ice melts in the Arctic that will remove that white surface off of the ocean, and what will be exposed is this darker ocean surface that will absorb more of the sun’s heat.
  • This dovetails with the second factor: changing currents.
  • Ocean currents normally bring in warmer water from the Pacific, and colder water exits out of the Arctic into the Atlantic.
  • But those currents may be changing because more melting ice is injecting the Arctic Ocean with freshwater, which is less dense than saltwater, and therefore floats above it.
  • The missing ice also exposes the surface waters to more wind, speeding up the Beaufort Gyre in the Arctic, which traps the water it would normally expel into the Atlantic.
  • This acceleration mixes up colder freshwater at the surface and warmer saltwater below, raising surface temperatures and further melting ice.
  • Ocean currents influence the weather, a third factor.
  • They drive the powerful polar jet stream, which moves hot and cold air masses around the Northern Hemisphere. This is a product of the temperature differences between the Arctic and the tropics.
  • But as the Arctic warms, the jet stream now undulates wildly north and south. This has been injecting the Arctic with warm air in the summer and the US with extremely cold air in the winter, like during the “polar vortex” of January 2019.
Artic Warming Environment
Print Friendly, PDF & Email
Loading

Recent Posts

  • Quiz 2021: Prelims Power Play 15 January 2021 January 15, 2021
  • Daily Practice Sheet 15 January 2021 January 15, 2021
  • What do you understand by dilemma? January 15, 2021
  • What is genome sequencing? Discuss its various applications with specific mention of precision medicine. January 15, 2021
  • Climate change is the biggest national security for countries of the word. Elaborate the security threats die to climate change and what has been world’s response so far? Are these steps enough? January 15, 2021
  • Social media is a double-edged sword. In context of role of social media as medium to promote violence in USA discuss issues with the misuse of social media and what should be framework to regulate it. January 15, 2021
  • What is Hybrid Annuity model (HAM)? Why developers prefer HAM over Engineering, Procurement and Build, Operate and Transfer model. How the recent changes in HAM model will further boost infrastructure sector. January 15, 2021
  • What do you understand by inverted duty structure? Discuss its impact on domestic industry. January 15, 2021
  • What do you understand by startup? Comment upon start up scenario in India. Discuss the challenges faced by them. January 15, 2021
  • What are the factors responsible for extreme air pollution in Delhi compared to other metro cities? What have been government’s response to address it? January 15, 2021

About

If IAS is your destination, begin your journey with Santosh Sir. I have the distinction of clearing all 6 UPSC CSE Prelims with huge margins.

I mastered the art of clearing UPSC CSE Prelims and in the process devised an unbeatable strategy to ace Prelims which many students struggle to do 

My Initiative

  • Daily Practice Sheets
  • Daily Prelims Notes
  • Friday Factly
  • Prelims Power Play
  • Sunday Essay Sadhna

My Proven Strategy

  • Interview Strategy
  • Mains Strategy
  • Motivational
  • Prelims Strategy

Contact us

Contact@optimizeias.com

Search