Related by context. Frequent words. (Click for all words.) 50 Resolute Bay 50 Polar Regions 49 Weddell Sea 49 Antarctica 49 subarctic 48 Antarctic 48 polar vortex 48 polar 47 interglacial period 46 icecap 46 Arctic 45 NASA MODIS Image 45 Projected completion 45 poleward 44 Northern Hemisphere 44 arctic 44 Thar desert 44 Andes Mountains 44 equatorial Pacific Ocean 43 northern latitudes 43 Arctic Circle 43 Arctic Ocean 43 degrees Fahrenheit warmer 43 equatorial 42 winter 42 Unusually warm 42 Arctic tundra 42 melting permafrost 42 Southern Hemisphere 42 Rothera 42 Amundsen Scott 42 tundra 42 northern hemisphere 42 Ross Ice Shelf 41 Beringia 41 glacier 41 Punta Arenas Chile 41 Antartica 41 polar regions 41 thawing permafrost 41 tropics 41 McMurdo Sound 41 Longyearbyen 40 glacial retreat 40 Mendenhall Glacier 40 -# Fahrenheit [001] 40 ice melts 40 ICESat 40 snowline 40 icecaps 40 troposphere 40 equator 40 retreating glaciers 40 Sahara desert 40 geomagnetic 40 Bering Sea 40 mid latitudes 40 glacier melt 40 floe 40 Sahara Desert 40 thermosphere 40 Bering Strait 40 Antarctic peninsula 39 polar ice 39 cryosphere 39 insolation 39 Baffin Island 39 Antarctic expedition 39 taiga 39 GOCE 39 solar irradiance 39 interglacial 39 Ellesmere Island 39 wintertime 39 Ilulissat 39 Pleistocene era 39 warmer drier 39 southern hemisphere 39 Arabian desert 39 Arctic archipelago 38 Antarctic seas 38 Little Ice Age 38 Svalbard 38 Qinghai Tibet Plateau 38 -# degrees Fahrenheit [002] 38 equatorial Pacific 38 musk oxen 38 Lake Vostok 38 autumnal equinox 38 McMurdo Station 38 glacial melting 38 Antarctic Peninsula 38 Spitsbergen 38 -# degrees Celsius [002] 38 MARSIS 38 glaciation 38 Tibetan Plateau 38 winters 38 interplanetary spacecraft 38 Mount Elbrus 38 NASA Cassini spacecraft