A study titled “Triple dip La-Nina, unorthodox circulation and unusual spin in air quality of India” was conducted | Current Affairs | Vision IAS
    • VisionIAS Logo
    Share
    DCAP-mobile
    News Today Logo
    SUN MON TUE WED THU FRI SAT
    1 2 3 4 No article 5 6 7 8 9 10 11 No article 12 13 14 15 16 17 18 No article 19 20 21 22 23 24 25 No article 26 27 28 29

    Table of Content

    A study titled “Triple dip La-Nina, unorthodox circulation and unusual spin in air quality of India” was conducted

    Posted 21 Feb 2024

    Updated 21 Mar 2024

    1 min read

    • The study was conducted by National Institute of Advanced Studies and Indian Institute of Tropical Meteorology.

     

    • Key-highlights
      • Indian regions encountered a mysterious trend reversal in pollution ( PM2.5) during the winter of 2022–23. 
      • The unusually worst air quality over South-Western India, whereas relatively cleaner air over the highly polluted North India was observed.
      • Factors Responsible: 
        • Winter in 2022 coincided with the last phase of an unusual triple-dip (or three consecutive years) La Nina event.
        • The change in the normal wind direction: During normal time, the wind blows in the north-westerly direction (from Punjab towards and Gangetic plains) which is responsible for stubble burning pollutants to flow in Delhi.
        • However, in the winter of 2022 the wind circulation was in the north-south direction. Air pollutants being carried from Punjab and Haryana bypassed Delhi (lesser pollution) and surrounding areas and flew over western and  southern regions.

     

    • La-Nina refers to the periodic cooling of ocean surface temperatures in the central and east-central equatorial Pacific.
      • Typically, occurs every 3 to 5 years or so. 
      • It positively impacts the Indian Monsoon. 
    • Tags :
    • Triple dip La-Nina
    • La-Nina
    • Air quality
    Next Article
    Reservation for Maratha Community
    Watch News Today
    Download News Today