Black Carbon

Why in News?

  • Recently, In Lok Sabha, the Minister of State for Environment, Forest and Climate Change outlined the several measures taken to counter black carbon.
  • Under the Indian Space Research Organization (ISRO) Geo-sphere Biosphere Programme, the ISRO operates a network of aerosol observatories and black carbon mass concentration is one of the parameters being measured.

About Black Carbon-

  • Black Carbon is a short-lived pollutant that is the 2nd largest contributor to warming the planet after carbon dioxide (CO2).
  • Unlike other greenhouse gas emissions, Black Carbon is rapidly washed out and can be removed from the atmosphere if emissions stop.
  • Unlike historical carbon emissions it is also a localised source with sizeable local impact.
  • Black carbon is a kind of an aerosol.
  • General Impacts- Among aerosols (like brown carbon, sulphates), Black Carbon has been recognized as the second most important anthropogenic agent for climate change and the primary marker to understand the severe effects caused by air pollution.
  • Black carbon absorbs solar energy, it warms the atmosphere. When it falls to earth with precipitation, it darkens the surface of snow and ice, decreasing their albedo (the reflecting power of a surface), warming the snow, and hastening melting.
  • Emission- It gets emitted from gas and diesel engines, coal-fired power plants, and other sources that burn fossil fuel. It involves a significant portion of particulate matter or PM, which is an air pollutant.

Various Measures taken-

  • Pradhan Mantri Ujjwala Yojana- Under this initiative, the government is encouraging use of cleaner household cooking fuels.
  • BS VI Emission Norms- Leapfrogging from BS-IV to BS-VI norms for fuel and vehicles from 1st April, 2020.
  • Introducing Cleaner Fuels- Introduction of cleaner or alternate fuels such as gaseous fuel (CNG, LPG etc.), ethanol blending.
  • SATAT Scheme- A new initiative, “Sustainable Alternative Towards Affordable Transportation (SATAT), has been launched to establish 5000 Compressed Bio-Gas production plants and make CBG available in the market for use.
  • Managing Crop Residue- Agricultural machines and equipment for in-situ crop residue management in Haryana, Punjab, Uttar Pradesh and NCT of Delhi are encouraged under the Central Sector Scheme on Promoting Agricultural Mechanization for in-situ Crop Residue Management with 50% subsidy to individual farmers and 80% subsidy to the set up of Custom Hiring Centres (CHC).
  • National Clean Air Programme- The Central Government is implementing the National Clean Air Programme as a long-term, time-bound, national-level strategy to deal with the air pollution problem across the country in a comprehensive manner.
  • The Centre has set a new target of a 40 percent reduction in particulate matter concentration in cities covered under the scheme by 2026, updating the previous goal of 20 to 30% reduction by 2024.
  • City specific Clean Air Action Plans- The Central Pollution Control Board has identified 131 cities based on ambient air quality levels exceeding national ambient air quality standards, and cities with more than million population.
  • City specific Clean Air Action Plans have been prepared and rolled out for implementation in these cities.
  • These plans define time bound targets to control city specific air polluting sources (such as soil and road dust, vehicles, domestic fuel, municipal solid waste burning, construction material and industries, etc.).
  • FAME Scheme- Faster Adoption and Manufacturing of Electric Vehicles (FAME) phase-2 scheme has been started.

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