International Journal of Environmental Sciences

Volume 6 Issue 5 2015- March 2016 Pages: 905 - 911 <<Previous    Next>>

Anti-greenhouse effect causing global cooling: An effect of suspended particulate matter (SPM) in atmosphere

Author Information:

Asim K. Das, Ankita Das - Department of Chemistry, Visva-Bharati, Santiniketan 731235, India

ABSTRACT

The versatile adverse effects of suspended particulate matter (SPM) in air are well noted. The SPM can scatter back (albedo property) the incoming solar radiation to the space. Due to this scattering, the earth surface receives a lesser amount of solar radiation but the stratosphere becomes relatively hotter. This phenomenon is known as antigreenhouse effect. The particulates, specially the sulfate aerosol, can act as the nuclei for cloud condensation. It causes more rainfall and the atmosphere becomes cooler. The cloud can also show the albedo property. Accumulation of SPM in atmosphere may occur due to both the human activities and natural activities like volcanic eruption. The antigreenhouse effect of SPM is evidenced from the lowering of average atmospheric temperature after each massive volcanic eruption like Mt. Pintatubo (1991, Philippines), Mt. Agung (1963, Bali), Mt. Tambora (1815, Indonesia), etc. The volcanic eruption in 1815 was so massive (estimated aerosol load injected into the atmosphere > 100 Tg) that the year 1816 missed the summer globally.

Keywords: Albedo, suspended particulate matter (SPM), aerosol, greenhouse effect, aerosol cooling, cloud condensation, antigreenhouse effet.

DOI:10.6088/ijes.6085

© 2016 Copyright by the authors, licensee Integrated Publishing Association.This is an open access article distributed under the Creative Commons Attribution License (3.0) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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