Temperature profiles Gravity waves 8 Radio occultations 8 Temperature control 8 Gravitational effects 6 Hydrodynamics 6 Potential energy 6 Waves 6 Altitude ranges 4 Clouds 4 Extractive metallurgy 4 Filtering methods 4 GPS 4 Gaussian filters 4 Global positioning system 4 Gravitation 4 Lower stratosphere 4 Possible errors 4 Radio 4 Temperature gradients 4 Tropical engineering 4 Tropopause regions 4 Wave activities 4 gravity wave 4 potential energy 4 temperature gradient 4 tropopause 4 Argentina, Andes 2 Atmospheric conditions 2 Atmospheric movements 2