Related by context. Frequent words. (Click for all words.) 63 climatologists 58 Climatologists 58 greenhouse warming 57 scientists 53 oceanographers 53 atmospheric carbon dioxide 52 mountain glaciers 52 Greenland ice 52 Serreze 51 albedo 51 atmospheric CO2 51 sunspot activity 51 greenhouse gas concentrations 50 melting permafrost 50 ozone depletion 50 climatology 50 physicists 49 climatological 49 cosmologists 49 ENSO 49 atmospheric circulation 49 manmade global warming 48 hydrologists 48 glaciers 48 journal Geophysical Research 48 atmospheric concentrations 48 GISS 48 troposphere 48 astrophysicists 47 Trenberth 47 alarmists 47 astronomers 47 anthropogenic global warming 47 atmospheric chemistry 47 polar ice 47 mid latitudes 47 atmospheric 47 meteorologists 47 decadal 47 polar regions 47 climatologist 47 biologists 47 global warming skeptics 47 gas hydrates 46 ecologists 46 ocean acidification 46 Little Ice Age 46 Landsea 46 glaciation 46 modelers 46 researchers 46 NCAR 45 mass extinctions 45 global warming 45 sediment cores 45 NASA Goddard Institute 45 Steig 45 polar 45 Antarctic ice 45 plate tectonics 45 streamflow 45 abundances 45 permafrost 44 extrasolar planets 44 pikas 44 Nature Geoscience 44 IPCC 44 anthropogenic 44 evolutionary biologists 44 radiocarbon 44 theoreticians 44 Himalayan glaciers 44 sunspots 44 theorists 44 climate 44 Overpeck 44 Arctic Ocean 43 oceanic 43 NIWA 43 Geophysical Research 43 precipitation 43 World Meteorological Organisation 43 cosmic microwave background 43 computer simulations 43 geologists 43 acidification 43 fisheries biologists 43 snowpacks 43 tropical cyclones 43 journal Nature Geoscience 43 National Climatic Data 43 melting 43 WMO 43 water vapor 43 Antarctica 43 experimentalists 42 melting glaciers 42 oceans 42 volcanism 42 Arctic 42 Tibetan Plateau