Related by context. Frequent words. (Click for all words.) 57 Mark Serreze 56 Roger Pielke Jr. 54 Sarver Heart 51 planetary scientist 51 NSIDC 51 Natural Hazards 50 Steven Camarota 50 Sonoran Institute 50 journal Geophysical Research 50 Serreze 49 Ken Caldeira 49 Planetary Laboratory 49 Kassie Siegel 49 ocean acidity 49 glaciers melting 49 Overpeck 49 Nature Geoscience 48 CO2 concentrations 48 glacial retreat 48 Peter Gleick 47 Kevin Trenberth 47 journal Nature Geoscience 47 planetary sciences 47 glacial melt 47 geological sciences 47 Pielke 46 Geophysical Research 46 Climate Impact Assessment 46 Ray Arvidson 46 Phil Klotzbach 46 Southeastern Tropical 46 greenhouse gas concentrations 46 polar caps 46 glacial melting 46 mid latitudes 45 atmospheric scientist 45 Greenland glaciers 45 atmospheric sciences 45 Patzert 45 Julander 45 planetary science 45 mountain glaciers 45 icecap 45 El Nino warming 45 University Lamont Doherty 45 geosciences 45 Swetnam 45 glaciers 44 species extinctions 44 Strobeck 44 atmospheric carbon dioxide 44 USGS 44 oceans 44 Trenberth 44 ocean acidification 44 Scambos 44 atmospheric concentrations 44 CU Boulder 44 Cassini radar 44 icecaps 44 poleward 44 Ralph Sacco 43 Amstrup 43 geochemist 43 Lautenbacher 43 Elizabeth G. Nabel 43 Landsea 43 Climatologists 43 greenhouse warming 43 pikas 43 State Climatologist 43 Nasa Jet Propulsion 43 Stephen Prothero 43 NOAA Climate Prediction 43 Sonoran Desert 43 astrobiologist 43 Ocean Observing 43 NASA Goddard Institute 43 cryosphere 43 A'Hearn 42 El Niños 42 El Ninos 42 Arizona 42 evapotranspiration 42 anthropogenic climate 42 Astrobiology 42 atmospheric methane 42 Greenland ice 42 President Peter Likins 42 Hans Graber 42 climate modelers 42 Atmospheric Research 42 Derocher 42 Philip Klotzbach 42 Chicxulub 42 extinctions 42 geomorphology 42 glaciologist 42 forest ecologist 42 biological oceanographer 42 Biological Diversity