IITM Publication Highlights
Air quality simulation over South Asia
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For the first time, this study by IITM is contribution towards the Task Force on Hemispheric Transport of Air Pollution (TF HTAP), the Convention on Long-Range Transboundary Air Pollution (CLRTAP) global assessment efforts using regional and global model simulations and addressed the issues pertaining to Air quality over South Asia and hemispheric transport of pollutants in the HTAP phase-2 renewed mandate.
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(Divya E., Ghude S.D., Beig G., L.K. Emmonsb, Jena C., Rajesh K., G.G. Pfister, Chate D.M., Atmospheric Environment , Dec. 2015) |
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Why are the Indian monsoon transients short-lived and less intensified during droughts vis-a-vis good monsoon years? An inspection through scale interactive energy exchanges in frequency domain
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The most common features in deficient monsoon / drought years (also observed during 2015) are that the monsoon transients/low pressure systems (LPSs) are short-lived, not aligned along the monsoon trough and show less westward propagation before dissipation when compared with good monsoon years. Now, the question arises - why the LPSs show these characteristics during droughts vis-a-vis good monsoon years. This paper explores the possible answer of the above mentioned question in the perspective of the non-linear scale interactive kinetic energy exchanges in frequency domain. Read more... (Agarwal N.K., Naik S.S., De S., Sahai A.K., Int. journal of Climatology, online, Nov 2015) |
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Deciphering the desiccation trend of the South Asian monsoon hydroclimate in a warming world
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By conducting climate change simulation experiments, using a global model with high-resolution zooming over South Asia, the authors demonstrate that regional land-use changes and anthropogenic aerosol-forcing, together with rapid warming of the equatorial Indian Ocean have suppressed the monsoonal rains and promoted precipitation extremes over India in recent decades. Read more... (R. Krishnan, T.P. Sabin, R. Vellore, M. Mujumdar, J. Sanjay, B. N. Goswami, F. Hourdin, J-L. Dufresne and P. Terray, Climate Dynamics , October 2015) |
