Brown carbon ‘tarballs’ that hasten glacial melt found in Himalayan atmosphere
- Posted By
7th Nov, 2020
- Nearly 28 per cent of particles collected from the air samples from a research station in the Himalaya-Tibetan Plateau were tarballs.
What are Tarballs?
- Tarballs are small light-absorbing, carbonaceous particles formed due to burning of biomass or fossil fuels that deposit on snow and ice.
- Primary brown carbon (BrC) co-emitted with black carbon (BC) from biomass burning is an important light-absorbing carbonaceous aerosol.
- The percentage of the tarballs increased on days of higher levels of pollution and could contribute to hastening of glacial melt and global warming.
- The median sizes of externally mixed tarballs and internally mixed tarballs were 213 and 348 nanometre respectively.
- Tarballs from long-range transport can be an important factor in the climatic effect and would correspond to a substantial influence on glacial melting in the Himalaya region.