Related by context. Frequent words. (Click for all words.) 65 radiative 63 greenhouse warming 62 anthropogenic 61 atmospheric CO2 61 albedo 58 atmospheric circulation 58 sunspot activity 57 atmospheric carbon dioxide 57 aerosols 56 atmospheric concentrations 56 troposphere 55 mid latitudes 55 perturbation 55 fluxes 55 GHGs 55 ozone depletion 55 decadal 55 CO2 concentrations 54 water vapor 54 greenhouse gas concentrations 53 abundances 53 X ray emission 53 anthropogenic climate 53 Little Ice Age 53 atmospheric chemistry 52 perturbations 52 gigatonnes 51 oscillation 51 N2O 51 isotopic 50 atmospheric 50 dynamical 50 Co2 50 amplitudes 50 CO2 50 ENSO 49 greenhouse gasses 49 oscillations 49 GHG emission 49 North Atlantic Oscillation 49 radioactive decay 49 polar regions 49 nitrous oxide emissions 49 Greenhouse gases 48 greenhouse gases 48 phytoplankton 48 cosmic ray 48 gigatons 48 Greenhouse Gases 48 chirality 48 minima 48 Medieval Warm Period 48 variability 48 GHG emissions 48 carbon dioxide 47 El Ninos 47 reflectivity 47 GHG 47 volcanism 47 sunspot 47 magnetization 47 infrared radiation 47 extinctions 46 geomagnetic field 46 burning fossil fuels 46 latitudes 46 ejecta 46 glacial melt 46 relativistic 46 sunspots 46 mass extinctions 46 infrared wavelengths 46 thermodynamic 46 ultraviolet radiation 46 Carbon dioxide emissions 46 earths 46 emission reductions 46 carbon emitted 46 Sulfur dioxide 46 redshift 46 Carbon dioxide 46 ionization 46 GRBs 46 ionosphere 45 CO2 emissions 45 CH4 45 conductance 45 Landsea 45 oxidant 45 Serreze 45 nitrogen fixation 45 invariant 45 climatological 45 refractive index 45 HD #b [002] 45 evapotranspiration 45 nitrogen oxides NOx 45 supernova explosion 45 coefficients 45 CO2 emitted 45 biosphere