Related by context. Frequent words. (Click for all words.) 64 lake sediments 62 solar irradiance 61 marine sediments 59 decadal 59 geologic 58 sediment cores 58 streamflow 57 interglacial period 57 Medieval Warm Period 57 atmospheric CO 56 isotopic 55 atmospheric methane 55 ENSO 55 climatological 55 terrestrial ecosystems 55 glaciation 55 species extinctions 54 abundances 54 interglacial 54 polar ice 54 glacial melting 54 oxygen isotopes 54 atmospheric CO2 54 nitrogen fixation 54 Holocene 54 atmospheric carbon dioxide 54 morphological 54 glacial melt 53 El Ninos 53 Younger Dryas 53 Polar Regions 53 mid latitudes 53 hydrological cycle 53 climate modelers 52 sunspot cycle 52 CO2 concentrations 52 morphologic 52 geomorphology 52 retreating glaciers 52 landforms 52 atmospheric circulation 52 genotypic 52 anthropogenic 52 atmospheric concentrations 51 greenhouse warming 51 microfossils 51 radiocarbon 51 epidemiologic studies 51 Landsea 51 mountain glaciers 51 chronologies 51 Quaternary 51 diatom 51 seismicity 51 oceanic 51 Greenland Ice 50 sunspot numbers 50 temperature salinity 50 ICESat 50 extinctions 50 crustal 50 phylogenetic 50 anthropogenic climate 50 numerical simulations 50 volcanism 50 measurements 50 geological 50 sunspot activity 50 Little Ice Age 50 climatic 50 #.#C [004] 50 phylogeny 50 continental drift 50 storminess 50 biogeography 49 NSIDC 49 anisotropy 49 biophysical 49 hydrologic 49 Greenland ice 49 geochemical 49 taxa 49 irradiance 49 Antarctic ozone 49 mass extinctions 49 polar caps 49 solar corona 49 glacial ice 49 Antarctic ice 49 speciation 49 Pliocene 49 glaciers 49 greenhouse gas concentrations 48 synoptic 48 ocean acidity 48 plate tectonics 48 stalagmite 48 glacial 48 Climatic 48 volcanic activity 48 albedo