IASTA e-Bulletin

IASTA e-Bulltein | Vol. 21 No.1 Home

International Research News

1. Large uncertainty in aerosol forcing attributed to lack of knowledge about natural aerosols

A new study (Carslaw et al., 2013) has revealed that 45% of the variance observed in the estimated aerosol forcing relative to the pre-industrial era of 1750 can be attributed to uncertainties in natural emissions of marine dimethylsulphide, volcanic sulphur dioxide, biogenic volatile organic carbon, biomass burning and sea spray. Remaining 34% of the variance is associated with the uncertainties in anthropogenic emissions. The results point out to the importance of understanding the long term changes in natural aerosol loading in addition to most of the recent efforts being focused on to accurately estimate anthropogenic aerosol properties.

Reference

Carslaw, K. S., L. A. Lee, C. L. Reddington, K. J. Pringle, A. Rap, P. M. Forster, G. W. Mann, D. V. Spracklen, M. T. Woodhouse, L. A. Regayre and J. R. Pierce (2013), Large contribution of natural aerosols to uncertainty in indirect forcing, Nature, 503, 67-71.

2. Educational article on aerosols

An educational article (Myhre et al., 2013) has summarized the role of aerosols to global climate and its sensitivity. The article discusses the source and composition of aerosols and their global distributions, their role in climate and recent progress. The discussion with the help of simplified illustrations is an ideal thought-provoking article for the youngsters, who are at the beginning of their career in aerosol science.

Reference

Myhre, G., C. E. Lund Myhre, B. H. Samset and T. Storelvmo (2013), Aerosols and their relation to global climate and climate sensitivity, Nature Education Knowledge, 4 (5), 7.

Editorial Board

Dr Sagnik Dey
Asst Professor
CAS, IIT Delhi
sagnik@cas.iitd.ac.in

Dr P. C. S. Devara
Ex-Scientist and
Advisor IITM, Pune
devara@tropmet.res.in

Dr A Jayaraman
Director
NARL
jayaraman@narl.gov.in

Dr B. K. Sapra
Head, E&BDS, RPAD
BARC
bsapra@barc.gov.in

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