Related by context. Frequent words. (Click for all words.) 58 Greenland ice 58 glaciers 57 meltwater 57 Melting ice 57 melting permafrost 57 atmospheric carbon dioxide 57 Antarctic ice 55 polar caps 55 atmospheric CO2 55 mountain glaciers 55 glacial melt 54 greenhouse warming 54 polar ice 53 permafrost 53 melting ice 53 Antarctic Ice 53 melting glaciers 53 Himalayan glaciers 53 Permafrost 52 melting 52 glacier 51 Arctic Ocean 51 glacial ice 51 Glaciers 51 peat bogs 50 Melting snow 50 CO2 concentrations 50 acidification 50 manmade global warming 50 glacial lakes 50 gigatonnes 50 gas hydrates 49 methane 49 snowpacks 49 glaciation 49 water vapor 49 atmospheric concentrations 49 heat trapping carbon dioxide 48 Greenhouse gases 48 boreal 48 polar regions 48 snowpack 48 greenhouse gas concentrations 48 Global warming 48 oceans 47 Tibetan Plateau 47 Snowpack 47 Serreze 47 glacial lake 47 protective ozone layer 46 journal Geophysical Research 46 ozone layer 46 Antarctica 46 gigatons 46 carbon dioxide 46 stalagmites 46 CO2 46 greenhouse gases 45 Geophysical Research 45 Arctic 45 albedo 45 earth crust 45 Little Ice Age 45 Sierra snowpack 45 melting polar 45 extinctions 45 volcanism 45 Sulfur dioxide 45 phytoplankton 45 Droughts 45 ocean ecosystems 45 peat bog 45 boreal forest 45 boreal forests 45 Carbon dioxide emissions 45 journal Nature Geoscience 45 Melting 45 Antarctic Peninsula 45 volcanic eruptions 45 mid latitudes 45 carbon dioxide CO2 44 lake sediments 44 atmospheric circulation 44 polar 44 snowmelt 44 crustal 44 earths 44 ocean acidification 44 diatoms 44 melt 44 stalagmite 44 global warming 44 volcanic activity 44 Greenland 44 Coral reefs 44 mountain snowpack 44 refreezing 44 warmer winters 44 mass extinction 44 ice melts 44 melting snow