Related by context. Frequent words. (Click for all words.) 62 anthropogenic 61 atmospheric CO2 60 anthropogenic climate 60 hydrological cycle 59 albedo 58 greenhouse warming 56 ENSO 56 radiative 55 terrestrial ecosystems 55 atmospheric circulation 55 atmospheric concentrations 55 aerosol particles 55 perturbations 54 dynamical 54 perturbation 54 oscillations 54 sunspot activity 54 fluxes 53 CO2 concentrations 53 oxygen isotopes 53 sunspot cycle 53 atmospheric carbon dioxide 53 Medieval Warm Period 53 coefficients 52 variability 52 amplitudes 52 Brownian motion 52 morphologies 52 ozone depletion 51 El Ninos 51 phenomena 51 biogenic 51 Little Ice Age 51 climate alarmists 51 climatological 51 periodicity 50 atmospheric chemistry 50 mid latitudes 50 oscillation 50 Supplementary Fig 50 sunspot numbers 50 conductance 50 chirality 50 minima 50 species extinctions 50 intensities 50 maxima 50 CO ² 50 glacial melt 50 irradiance 50 volcanism 50 glaciation 50 magnetization 50 isoprene 49 decadal 49 taxa 49 polar caps 49 angular momentum 49 biosphere 49 feedback loops 49 isotopic 49 reflectance 49 marine sediments 49 greenhouse gas concentrations 49 climatic 49 water vapor 49 abundances 49 Lindzen 49 gradients 48 anisotropy 48 ocean acidity 48 earths 48 thermodynamic 48 variables 48 hysteresis 48 superposition 48 abiotic 48 mass extinctions 48 aerosols 48 Pielke 48 multicellular organisms 48 plate tectonics 48 extinctions 48 genotypic 48 metabolic abnormalities 48 nuclei 48 tectonics 48 geomagnetic 47 temperature gradient 47 lithosphere 47 logarithmic 47 conformations 47 biophysical 47 fermions 47 nitrogen fixation 47 ionospheric 47 z = 47 invariant 47 equinoxes 47 equations 47 Holocene