G. Uma

On the validity of the ionospheric pierce point (IPP) altitude of 350 km in the Indian equatorial and low-latitude sector

P. V. S. Rama Rao, K. Niranjan, D. S. V. V. D. Prasad et al. · Annales Geophysicae · 2006 · 184 citations · Full text

Geophysics, Upper Atmosphere, Low-latitude Sector +14

Global S4 index variations observed using FORMOSAT‐3/COSMIC GPS RO technique during a solar minimum year

P. S. Brahmanandam, G. Uma, Jann‐Yenq Liu et al. · Journal of Geophysical Research Atmospheres · 2012 · 87 citations · Full text

Engineering, Solar Convection, Solar Minimum Year +18

A global comparative study on the ionospheric measurements between COSMIC radio occultation technique and IRI model

P. S. Brahmanandam, Yen‐Hsyang Chu, G. Uma et al. · Journal of Geophysical Research Atmospheres · 2011 · 51 citations

Geophysics, Electron Density, Global Comparative Study +14

A comparison of the equatorial spread F derived by the International Reference Ionosphere and the S 4 index observed by FORMOSAT-3/COSMIC during the solar minimum period of 2007–2009

G. Uma, Jann‐Yenq Liu, S. P. Chen et al. · Earth Planets and Space · 2012 · 29 citations · Full text

Upper Atmosphere, Engineering, Equatorial Spread F +16

Ionospheric responses to two large geomagnetic storms over Japanese and Indian longitude sectors

G. Uma, P. S. Brahmanandam, Yoshihiro Kakinami et al. · Journal of Atmospheric and Solar-Terrestrial Physics · 2011 · 27 citations

Geophysics, Engineering, Large Geomagnetic Storms +9