2021-02-07 14:45:00
Black Carbon
● It is a component of fine particulate matter of the size2.5 μm. It consists of pure carbon, which originates from the incomplete combustion of fossil fuels, coal, biofuel, biomass, wood, rubber etc. It is emitted in the form of soot.
● SOOT is an air borne mass of impure carbon particles resulting from the incomplete combustion of hydrocarbons. It originates from pyrolysis.
Brown Carbon
● Brown carbon is brown smoke released by the combustion of organic matter. It coexists with black carbon when released in the atmosphere.
Sources of brown carbon are:
● Breakdown products from biomass burning
● Tar materials from smouldering freres
● Coal combustion
● Combustion of fossil fuels and automobile exhaust
● Mixture of organic compounds emitted from soil
● Formed in the atmosphere from reactions of biogenic organic gases, given off
naturally by trees and other organisms, that condenses to form aerosol particles.
Blue Carbon
● It is the carbon captured by the world’s oceans and coastal ecosystems.
● This carbon is captured by living organisms in oceans is stored in the form of aquatic biomass.
● Blue carbon ecosystem act as the major sink for capturing atmospheric carbon and reducing warming effects.
Green Carbon
● It is the carbon captured into terrestrial plant biomass in photosynthesis and stored in
the plants and soil of natural ecosystems and is a vital part of the global carbon cycle.
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