Related by context. Frequent words. (Click for all words.) 53 aerosol particles 52 stratospheric ozone 52 hydrological cycle 51 sulphates 50 greenhouse warming 49 solar irradiance 49 glacial melting 49 hydrothermal activity 49 ionisation 48 ozone depletion 48 albedo 47 Antarctic ozone 47 atmospheric CO 47 radiative forcing 47 lithosphere 46 glacial melt 46 carbonic acid 46 aerosols 46 atmospheric methane 46 solar corona 46 water vapor 45 ultra violet rays 45 ionised 45 volcanism 45 equatorial Pacific Ocean 45 ocean acidity 45 stratospheric ozone layer 45 ultraviolet UV light 45 iron oxides 44 Hawking radiation 44 atmospheric circulation 44 acidification 44 volcanic gases 44 Computer simulations 44 X ray emission 44 degassing 44 ionospheric 43 atmospheric CO2 43 protective ozone layer 43 glacial retreat 43 CO2 concentrations 43 El Nino warming 43 temperature inversion 43 sulphate 43 polar regions 43 cryosphere 43 irradiance 43 icecaps 42 atmospheric 42 Ultraviolet light 42 inversion layer 42 species extinctions 42 melting permafrost 42 oxidization 42 visible wavelengths 42 radiative 42 convection 42 atmospheric carbon dioxide 42 polar caps 42 sulfates 42 lavas 42 poleward 42 cirrus clouds 42 crustal 42 Sulfur dioxide 42 subduction 42 infrared radiation 42 gases 42 methane hydrate 42 reddish hue 42 glacier melt 42 airborne pollutants 42 cosmic rays 42 carbon dioxide CO2 42 ultraviolet UV radiation 42 volcanic plume 42 sunrays 41 greenhouse gas concentrations 41 volcanic activity 41 sun ultraviolet rays 41 atmospheric chemistry 41 Arctic permafrost 41 volcanic eruptions 41 reflectance 41 desorption 41 atmospheric concentrations 41 microwave radiation 41 radioactive decay 41 radiations 41 methane 41 ultra violet light 41 geomagnetic storms 41 cosmic radiation 40 airborne particles 40 UVR 40 temperature gradient 40 phosphorescence 40 methane hydrates 40 soot particles 40 reflectivity 40 westerly winds