Related by context. Frequent words. (Click for all words.) 70 atmospheric circulation 63 volcanism 61 atmospheric CO2 61 greenhouse warming 59 atmospheric carbon dioxide 59 acidification 59 glaciation 58 meltwater 57 atmospheric chemistry 57 albedo 57 polar regions 56 ENSO 56 mid latitudes 56 ocean currents 56 anthropogenic 55 plate tectonics 55 ozone depletion 55 biosphere 55 eutrophication 55 landforms 55 crustal 55 upwelling 54 ecosystems 54 water vapor 54 precipitation 54 mountain glaciers 54 glaciers 54 Little Ice Age 54 Tibetan Plateau 54 aquatic ecosystems 53 snow melt 53 La Niña 53 salinity 53 greenhouse gas concentrations 53 La Nina 53 hydrological 53 ocean acidification 53 tectonics 52 phytoplankton 52 geomagnetic field 52 irrigated agriculture 52 oceans 52 forest ecosystems 51 troposphere 51 marine ecosystems 51 temperate regions 51 aerosols 51 oxygen depletion 51 equatorial Pacific 51 hydrologic 51 photosynthesis 51 monsoon rainfall 51 El Niño 51 interstellar medium 51 sediments 51 melting glaciers 51 soils 51 permafrost 50 aquifers 50 Antarctic Ice 50 groundwater recharge 50 atmospheric concentrations 50 rainfall 50 atmospheric 50 arid regions 50 diatoms 50 ocean ecosystems 50 desertification 50 convective 50 warmer temperatures 50 algal blooms 49 peatlands 49 magnetosphere 49 carbon sinks 49 snowmelt 49 river basins 49 sedimentation 49 climatic 49 heliosphere 49 biochemical reactions 49 magma 49 Carbon dioxide 49 seismicity 49 sediment 49 biodiversity 49 oxygenation 49 Antarctic ice 49 El Nino 48 tropical moisture 48 freshwater 48 Greenland ice 48 marine ecosystem 48 Desertification 48 Nature Geoscience 48 mass extinctions 48 perturbation 48 urbanization 48 volcanic activity 48 chemical reactions 48 fluxes 48 streamflow