Related by context. Frequent words. (Click for all words.) 53 Serreze 52 degrees Fahrenheit warmer 51 methane concentrations 50 Weddell Sea 50 atmospheric methane 49 gigatonnes 49 ocean acidity 48 atmospheric concentrations 48 interglacial period 48 CO2 concentrations 48 Mark Serreze 46 mid latitudes 46 degrees warmer 46 atmospheric carbon dioxide 46 atmospheric CO 46 El Niños 45 icecap 45 Greenland glaciers 45 interglacial 45 El Ninos 45 latitudes 45 atmospheric CO2 45 El Nino warming 45 journal Geophysical Research 45 greenhouse gas concentrations 45 Antarctic seas 44 Volcanic eruptions 44 hydrothermal vent 44 temperate zones 44 salinity 44 marine sediments 44 polar vortex 43 Icelandic Meteorological Office 43 hydrological cycle 43 volcanic tremors 43 sunspot cycle 43 equatorial regions 43 subtropical regions 43 Antarctica 43 sunspot numbers 43 glacial retreat 43 Carbon dioxide emissions 43 sunspot activity 43 aerosol particles 43 temperate forests 43 Norwegian Polar 43 equatorial Pacific 42 Antarctic ice 42 centigrade 42 becquerel 42 journal Nature Geoscience 42 Nature Geoscience 42 eastern equatorial Pacific 42 terrestrial ecosystems 42 geomagnetic field 42 temperatures 42 NSIDC 42 Polar Regions 42 melting permafrost 42 upwelling 42 subarctic 42 atmospheric circulation 42 glaciers melt 42 volcanic activity 42 equatorial Pacific Ocean 42 oceanic crust 42 glacial melting 42 degrees Celsius 42 insolation 42 ozone depletion 42 monsoon rainfall 42 glacial melt 42 Svalbard 42 westerly winds 42 substorms 41 ash plume 41 ocean currents 41 atmospheric 41 radiative forcing 41 warmer temperatures 41 Relative humidity 41 seawater 41 Kelud 41 glaciers melting 41 volcanic plume 41 glaciology 41 geochemist 41 Mount Kelud 41 volcano eruptions 41 Niels Bohr Institute 41 Northerly winds 41 Marine Biology 41 GPa 41 ozone concentrations 41 abundances 41 picocuries 41 Lake Vostok 41 northwesterly winds 41 gigatons 41 #F #C [002] 41 lithosphere