Alexander von Humboldt (AvH) Foundation, Germany
International Centre for Theoretical Physics (ICTP), Trieste, Italy
INSA, India and DFG, Germany
Assessor, National Assessment and Accreditation Council (NAAC), MoE, GoI
German Academic Exchange Service (DAAD), Germany
Indian National Science Academy (INSA), New Delhi
International Centre for Theoretical Physics (ICTP), Trieste, Italy
Indian Meteorological Society (IMS)
Dept. of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD, USA