Study of Solar-terrestrial interaction (solar flare, geomagnetic storm, solar eclipse) and impact on space weather of earth’s ionosphere and magnetosphere.

Study the disturbances due to X-rays and Gamma-ray events in space (terrestrial Gamma Ray Flashes, Gamma-Ray Bursts, Soft Gamma-Ray repeaters, etc.) and their interpretations.

Advanced remote sensing of middle and upper atmosphere using ground and space-based techniques.

Real-time and retrospective numerical modelling of the lower atmosphere using advanced techniques of ion-chemistry.

Study of ionosphere-magnetosphere coupling and its impact in the polar ionosphere; In-Situ observation from Indian Antarctic stations.

Study on terrestrial lightning and its induced ionospheric-magnetospheric coupling processes.

Low ionosphere as quantum resonance medium for radio signal propagation.

Instrumentation and networking of low-frequency radio receptors over the Indian sub- continent.