Gravity Wave Scientist
I am an early career researcher in the field of atmospheric science. At present, I am working at British Antarctic Survey as ‘Gravity Wave Scientist’. My research is focussed on understanding the short-term and long-term variability in gravity wave dynamics of the Mesosphere-Lower-Thermosphere (MLT) over the Scandinavian region as a part of MesoS2D project. The MesoS2D project aims to characterize and quantify the seasonal to decadal scale variability in the relatively less-understood MLT regions of the high-latitudes. I am using observation of airglow emissions coming from 85 – 130 km altitudes at different wavelengths to derive propagation characteristics of atmospheric gravity waves.
My favourite pass-time is cooking foods (Indian) and trying to replicate dishes from different parts of the world. I take coaching to improve my table tennis skills and love playing squash, volleyball, and football. I am very passionate about teaching Physics. I love to travel to various schools and colleges in remote locations to demonstrate scientific experiments to students of all ages.
Orcid iD: https://orcid.org/0000-0002-8694-404X
My research is aimed at understanding the variability in the Earth’s Upper Atmosphere, which are brought in by different drivers. These drivers could be atmospheric waves from lower altitudes, wind motions from different regions, solar flux from the top, or energy deposition in the high-latitudes during ‘geomagnetic storms’, where energetic particles precipitate in the polar region of the Earth. I make use of the ground-based observation (airglow) or measurements (digisonde) of different atmospheric parameters. Spectral analyses of the fluctuations in these parameters superposed on their broad variation, give information on the wave dynamics of these regions of the atmosphere. In addition to these datasets, I use numerical and physics-based model-outputs, satellite measurements, and magnetometer measurements, whenever needed.
- Mandal, S., Pallamraju, D., Karan, D. K., Phadke, K. A., Singh, R. P., and Suryawanshi, P. (2019). On deriving gravity wave characteristics in the daytime upper atmosphere using radio technique. Journal of Geophysical Research: Space Physics, 124, 6985–6997. https://doi.org/10.1029/2019JA026723.
- Mandal, S., Pallamraju, D., and Suryawanshi, P. (2020). Changes in the daytime thermospheric gravity wave propagation characteristics over low-latitudes in response to the variation in solar flux. Journal of Atmospheric and Solar-Terrestrial Physics (2020), https://doi.org/10.1016/j.jastp.2020.105414.
- Mandal, S., and Pallamraju, D. (2020). Thermospheric gravity wave characteristics in the daytime over low-latitudes during geomagnetic quiet and disturbed conditions. Journal of Atmospheric and Solar-Terrestrial Physics, https://doi.org/10.1016/j.jastp.2020.105470.
- Mandal, S.,Pallamraju, D., & Pant, T. K. (2022). Vertical propagation speeds of gravity waves in the daytime as a precursor to the onset of the equatorial spread-F. Journal of Geophysical Research: Space Physics, 127, e2022JA030401. https://doi.org/10.1029/2022JA030401.
MesoS2D: Mesospheric Sub-seasonal to Decadal predictability