Related by context. Frequent words. (Click for all words.) 63 sediment cores 59 lake sediments 53 marine sediments 50 radiocarbon dating 50 geomorphology 49 radiocarbon 49 sediment samples 47 interglacial period 47 oxygen isotopes 47 streamflow 47 Weddell Sea 46 retreating glaciers 46 Beringia 46 chronologies 46 journal Geology 45 subarctic 45 paleontological 45 Greenland glaciers 45 ocean ridges 45 oceanographers 45 transect 45 climate modelers 45 NSIDC 44 biogeography 44 transects 44 National Climatic Data 44 Medieval Warm Period 44 melting glacier 43 Polar Regions 43 archaeological finds 43 isotopic 43 glaciation 43 latitudinal 43 measurements 43 topographical maps 43 Serreze 43 landforms 43 NASA Cassini spacecraft 43 continental drift 42 Younger Dryas 42 paleo 42 geologic 42 studies 42 oceanographic 42 pottery shards 42 degrees Fahrenheit warmer 42 Nature Geoscience 42 polar regions 42 sediments 42 reconstructions 42 Ellesmere Island 42 tide gauges 42 stalagmites 41 Quaternary 41 microfilmed 41 permafrost 41 glacial ice 41 interglacial 41 sediment sampling 41 Little Ice Age 41 folklorists 41 glaciers 41 reanalysis 41 Scambos 41 glacial melt 41 seamounts 41 bald eagle nests 41 fossils 41 Tibetan Plateau 41 temperature salinity 41 Oceanographers 41 Qinghai Tibet Plateau 40 journal Geophysical Research 40 glaciologists 40 computer simulations 40 prehistory 40 topographical map 40 shrinking glaciers 40 atmospheric circulation 40 aerial photographs 40 polar caps 40 journal Nature Geoscience 40 National Longitudinal Survey 40 astronomical observations 40 atmospheric chemistry 40 hydrology 40 University Lamont Doherty 40 headwater streams 40 expeditions 40 climatological 40 tectonics 40 Climatology 40 latitudes 39 genealogies 39 mid latitudes 39 hydrologists 39 atmospheric methane 39 glaciologist 39 ICESat 39 archeologists 39 Remote sensing