Related by context. Frequent words. (Click for all words.) 59 Antarctic 56 Antarctica 54 IPY 54 polar 53 glaciation 52 ICESat 51 Antarctic expedition 51 Antarctic Peninsula 51 icecap 49 GOCE 49 glacier 48 Little Ice Age 48 Northern Hemisphere 48 polar regions 48 Holocene 48 landforms 48 glaciers 48 Medieval Warm Period 47 glacial ice 47 martian 47 Antartica 47 equatorial 47 glacial melt 46 arctic 46 mid latitudes 46 Late Cretaceous 46 ice melts 46 Geminids 46 cometary 46 northern hemisphere 45 Quaternary 45 Arctic 45 Southern Hemisphere 45 Pleistocene 45 equatorial Pacific 45 expeditions 45 meltwater 45 CloudSat 45 aurora 45 flyby 45 equinoxes 45 tropics 45 sunspot activity 45 Permafrost 45 Antarctic peninsula 44 Cretaceous Period 44 Envisat 44 glacier melt 44 NSIDC 44 Greenland Ice 44 expedition 44 Martian landscape 44 sediment cores 44 Wilkins Ice Shelf 44 glacial 44 NASA Cassini spacecraft 44 decadal 44 glaciologists 44 mountain glaciers 44 landmasses 44 northern latitudes 44 Resolute Bay 44 atmospheric CO2 44 El Ninos 44 THEMIS 44 volcanism 44 greenhouse warming 44 Tibetan Plateau 43 oscillation 43 temperate regions 43 IceCube 43 MODIS 43 Arctic Ocean 43 geomagnetic 43 stratospheric ozone 43 atmospheric circulation 43 Martian surface 43 polar caps 43 sols 43 warmer temperatures 43 orbiting spacecraft 43 winter 43 occultation 43 aerosol particles 43 Pliocene 43 polar ice 43 Svalbard 43 Martian 43 Ellesmere Island 43 substorms 43 HiRISE 43 ENSO 43 Antarctic ice 43 equatorial regions 43 Projected completion 43 Spitsbergen 43 CO2 concentrations 42 crustal 42 autumnal equinox 42 Baffin Island 42 astronomical observations