General Circulation of the Atmosphere, Middle Atmospheric Dynamics, Climate Dynamics and Change, Tropical Meteorology
Dutta, G., Kumar, P. V., and Salauddin Mohammad, (2017): Retrieving characteristics of IGW parameters with least uncertainties using hodograph method, Atmos. Chem. Phys. doi:10.5194/acp-2017-29.
Vinay Kumar, P., Dutta, G., Salauddin Mohammad and Venkateswara Rao, B., (2017): Climatology of diurnal tide and its longterm variability in the lower middle atmosphere over a tropical station. Theor.appl Climatol., DOI 10.1007/s00704-016-1871-1.
Rauser, F., M. Alqadi, S. Arowolo, N. Baker, J. Bedard, E. Behrens, N. Dogulu, L. Gatti Domingues, A. Frassoni, J. Keller, S. Kirkpatrick, G. Langendijk, M. Mirsafa, Salauddin Mohammad, A. Naumann, M. Osman, K. Reed, M., V. Schemann, A. Singh, S. Sonntag, F. Tummon, D. Victor, M. Villafuerte, J. Walawender, and M. Zaroug, (2016): Earth System Science Frontiers - an ECS perspective. Bull. Amer. Meteor. Soc. doi:10.1175/BAMS-D-16-0025.1.
Vinay Kumar, P., G. Dutta, M. V. Ratnam, E. Krishna, B. Bapiraju, B. V. Rao, and Salauddin Mohammad, (2016): 2016, Impact of cyclone Nilam on tropical lower atmospheric dynamics. Adv. Atmos. Sci., 33(8), 955-968, doi: 10.1007/s00376-016- 5285-x.
Salauddin Mohammad, Dutta, G., Rao, B. V., and Vinay Kumar, P., (2015): Equatorial wave activity during 2007 over Gadanki, a tropical station. J. Earth Syst. Sci. 124(4), 897-908.
Salauddin Mohammad, Dutta, G., Vinay Kumar, P., Krishna, E., Ajay Kumar, M. C., Rao, B. V. and Rao, P. V., (2014): Madden Julian Oscillations over a tropical Indian station using radar and ERA data of winds. Indian, J. of Radio and Space Phys., 43, 48-56.
G. Dutta, Salauddin Mohammad, M. Satyakumar, Y. K. Reddy, P. Vinay Kumar, P. V. Rao, and M. C. Ajay Kumar, (2012): Quasi-two-day wave in the lower atmosphere over Hyderabad during summer of 2009. Ann. Geophys., 30, 57-66, doi:10.5194/angeo-30-57-2012.
Gopa Dutta, P. Vinay Kumar, M. Venkat Ratnam, Salauddin Mohammad, M.C. Ajay Kumar, P.V. Rao, K. Rahaman, H.A. Basha, (2011): Response of tropical lower atmosphere to annular solar eclipse of 15 January, 2010. Journal of Atmospheric and Solar-Terrestrial Physics, 73, 1907-1914.
Gopa Dutta, M. C. Ajay Kumar, P. Vinay Kumar, M. Venkat Ratnam, M. Chandrashekar, Y. Shibagaki, Salauddin Mohammad, and H. A. Basha, (2009): Characteristics of high-frequency gravity waves generated by tropical deep convection: Case studies. Journal of Geophysical Research, 114, D18109, doi:10.1029/2008JD011332.
My area of research is middle atmospheric dynamics, general circulation of atmosphere and stratosphere troposphere exchange. The study of the atmosphere is one of the oldest intellectual pursuits. The atmosphere cannot be ignored; it is our environment. Although our everyday experiences of the earth’s atmosphere are, in general, confined to those phenomena which occur in the lower few kilometers, it does in fact extend up to an altitude of several hundred kilometers. In order to understand the many and varied approximations and assumptions of small-scale features such as individual clouds, regional, global weather prediction or climate models, it is necessary to study the various wave motions which are present in the atmosphere. The identification and appreciation of the mechanisms of these waves will allow us to isolate or eliminate certain wave types and to better understand the viability and effectiveness of commonly made approximations such as assuming hydrostatic balance.
Atmospheric dynamics and importance of waves: Atmospheric waves play an important role in the general circulation of dynamics. These waves transport energy and momentum from lower region to higher ones. Gravity waves, Tides, Equatorial waves, MJO and QBO are few of them. Most of my previous work is concentrating on the generation mechanisms and propagation of these waves along both temporal and spatial resolutions. My work was also included wave characteristics during solar eclipse, cyclones and thunderstorms. The major work has also been carried out on ozone variations and importance of these waves in changing their variations.
Current research: Global warming is the biggest threat to the mankind in the present scenario. Water vapor is an important trace gas and plays a crucial role in the radiation budget of global atmosphere. The presence of water vapor in the troposphere absorbs the radiation, whereas, in stratosphere it leads to global warming. The real mechanisms for transporting the water vapor into stratosphere are still sparse. Injection of this water vapor due to gravity wave breaking is one such kind of mechanism. My current research is mainly focusing on gravity wave breaking during thunderstorms and convection and their possible transportation of water vapor into upper atmosphere.