Related by context. Frequent words. (Click for all words.) 64 permafrost 54 Greenland Ice 51 Arctic 51 Antarctic Ice 50 Antarctica 50 Antarctic 49 glaciers 49 Antarctic ice 49 boreal 48 Thawing 48 Snowpack 48 melting permafrost 48 glacial ice 48 Arctic Ocean 47 Glaciers 47 glacier melt 47 Antarctic Peninsula 47 tundra 46 Melting 46 Greenland ice 46 Wilkins Ice Shelf 46 peat bogs 46 Atmosphere 46 NSIDC 46 Boreal Forest 46 polar regions 46 Melting ice 46 boreal forest 46 glaciation 46 Climatic 46 glacier 46 Tibetan Plateau 46 Geologic 45 meltwater 45 Qinghai Tibet Plateau 45 refreezing 45 arctic 45 earth crust 45 Glacial 45 polar caps 44 Precipitation 44 boreal forests 44 IPY 44 mountain glaciers 44 glacial 44 polar ice 44 volcanism 44 polar 44 Holocene 44 Antartica 43 Greenland 43 Volcanic 43 magmatic 43 mid latitudes 43 Spitsbergen 43 crustal 43 Geophysical Research 43 gas hydrates 43 albedo 42 crust 42 Subsurface 42 Serreze 42 greenhouse warming 42 melting 42 equatorial regions 42 Geological 42 lake sediments 42 Ellesmere Island 42 glaciologists 42 circumpolar 42 Little Ice Age 42 CO2 concentrations 42 Greenhouse Gases 41 atmospheric CO2 41 journal Geology 41 glaciologist 41 snowpack 41 volcanic activity 41 Sunspots 41 Arctic Circle 41 seamounts 41 regolith 41 peridotite 41 moraine 41 Medieval Warm Period 41 melting ice 40 Snowmaking 40 Arctic tundra 40 glacial melt 40 Svalbard 40 Earth crust 40 Carbon Dioxide 40 snowpacks 40 Astrobiology 40 Evaporation 40 earths 40 sedimentary rock 40 peatlands 40 Artic 40 peat bog 40 Melting snow