Published on: December 20, 2022

Black Carbon

Black Carbon

Why in news? ISRO Geosphere Biosphere Programme reported that long-term measurements of black carbon over the Indian region from regional network of aerosol observatories clearly shows a decreasing trend in the past decade.


About Black Carbon

  • It is a component of fine particulate matter and consists of pure carbon in several linked forms.
  • Formation : Through the incomplete combustion of fossil fuels, biofuel, and biomass
  • Occurring : Both anthropogenic and naturally occurring soot.
  • Impact
  • Human morbidity and premature mortality
  • It is a climate forcing agent contributing to global warming
  • Life : stays in the atmosphere for only several days to weeks
  • Presence in
  • Soil: Significantly contributes to fertility as it is able to absorb important plant nutrients especially in tropic
  • Water : Soluble and colloidal black carbon retained on the landscape from wildfires can make its way to groundwater.
  • Black carbon Hotspot areas include:
  • The Indo-Gangetic plains of India
  • Eastern China
  • Most of Southeast Asia and Indonesia
  • Equatorial regions of Africa
  • Mexico and Central America
  • Most of Brazil and Peru in South America.
  • Source: Approximately 20% from burning biofuels, 40% from fossil fuels, and 40% from open biomass burning
  • Biodegradation :
  • Condensed aromatic ring structures indicate black carbon degradation in soil.
  • Saprophytic fungi are being researched for their potential role in the degradation of black carbon.