Related by context. Frequent words. (Click for all words.) 69 ENSO 67 North Atlantic Oscillation 65 equatorial Pacific Ocean 64 La Niña 63 atmospheric circulation 61 equatorial Pacific 60 La Nina 60 hydrological cycle 59 El Niño 58 El Nino phenomenon 57 sunspot cycle 57 El Nino 57 convective 57 El Ninos 56 decadal 56 atmospheric CO 56 lithosphere 55 geomagnetic field 54 storminess 54 mid latitudes 54 magmatic 54 Younger Dryas 54 greenhouse warming 54 sunspot activity 54 temperature gradient 54 perturbations 53 troposphere 53 Little Ice Age 53 geomagnetic 53 subtropical regions 53 oscillations 53 volcanism 53 irradiance 53 dynamical 52 nitrogen fixation 52 oscillation 52 interglacial 52 vertical wind shear 52 anisotropy 52 terrestrial ecosystems 52 subduction 52 auroral 52 substorms 52 anthropogenic 51 perturbation 51 El Niño phenomenon 51 thermosphere 51 tropical cyclones 51 Holocene 51 volcanically active 51 aerosol particles 51 crustal 50 atmospheric 50 oceanic 50 amplitudes 50 ozone depletion 50 GPa 50 basalts 50 glacial melting 50 maxima 49 stratospheric ozone 49 synoptic 49 WMO 49 equatorial 49 anticyclone 49 La Nina weather 49 anomalously 49 Climatic 49 hydrothermal alteration 49 Polar Regions 49 X ray emission 49 ionospheric 49 cirrus clouds 48 temperate regions 48 phonons 48 geomagnetic storms 48 monsoonal 48 westerlies 48 Sunspots 48 Pliocene 48 marine sediments 48 atmospheric CO2 48 anisotropic 48 hydrogen ions 48 fluxes 48 glaciation 48 albedo 48 latitudes 48 convection 48 Iapetus 48 Quaternary 48 Medieval Warm Period 48 climatic 48 radiative 48 sunspot numbers 47 vortices 47 isotropic 47 continental crust 47 temperate zones 47 Variability 47 greenhouse gas concentrations