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(Click for frequent words.) 73 atmospheric concentrations 72 CO2 concentrations 72 atmospheric carbon dioxide 70 carbon dioxide concentrations 70 GHG concentrations 67 atmospheric CO2 65 atmospheric CO2 levels 64 atmospheric CO2 concentration 64 greenhouse warming 62 ppmv 62 anthropogenic emissions 61 anthropogenic greenhouse gas 61 atmospheric CO 61 ocean acidity 60 anthropogenic greenhouse gases 60 atmospheric CO2 concentrations 59 solar irradiance 59 greenhouse gases 59 atmospheric methane 59 Kharecha 59 extinctions 58 species extinctions 58 anthropogenic CO2 emissions 58 sunspot activity 58 dangerous anthropogenic interference 58 greenhouse gasses 57 Greenhouse gases 57 ozone depletion 57 degrees Celsius above preindustrial 56 planetary warming 56 Palaeocene Eocene Thermal Maximum 56 tropospheric ozone 56 anthropogenic 55 manmade greenhouse gases 55 stratospheric ozone 55 mammal extinctions 55 manmade CO2 emissions 55 #ppm CO2 55 gigatonnes 55 #.#oC [001] 55 sulphate aerosols 54 2oC 54 global warming 54 Atmospheric CO2 54 2C #.#F 54 anthropogenic warming 54 heat trapping gases 54 ppm CO2 54 radiative forcing 54 #.#C warmer 54 #.#C [004] 54 Greenhouse gasses 54 climatic variability 53 cosmic ray flux 53 sulfate aerosols 53 degrees above preindustrial 53 warmings 53 anthropogenic CO2 53 surface temperatures SSTs 53 preindustrial times 53 carbon dioxide 53 anthropogenic interference 53 hydrological cycle 53 mid latitudes 53 Little Ice Age 53 #ppm [001] 53 anthropogenic climate 52 deglaciation 52 preindustrial levels 52 #.#C #.#F [003] 52 glacial melting 52 Zeebe 52 climate change 52 N2O emissions 52 atmospheric 52 SO2 emissions 52 glacial interglacial cycles 52 greenhouse gas emissions 52 above preindustrial levels 52 ocean acidification 52 mass extinctions 52 atmospheric circulation 52 greenhouse emissions 51 ° C warmer 51 aerosol concentrations 51 GHGs 51 gigatons 51 ppbv 51 axial tilt 51 interglacial period 51 thermal inertia 51 greenhouse gases GHG 51 #.#C #.#C 51 wetter winters 51 anthropogenic carbon dioxide 51 polar caps 51 Medieval Warm Period 51 Anthropogenic 51 heat trapping pollutants 51 emitting greenhouse gases 51 ozone layer depletion 51 glaciations 51 tropopause 51 climate modelers 51 ozone concentrations 51 Gigatonnes 51 Rossby waves 51 amplifying feedbacks 50 Rignot 50 carbon dioxide emissions 50 total solar irradiance 50 Le Quere 50 heat trapping greenhouse gases 50 CO2 50 El Niños 50 Permian extinction 50 teleconnections 50 albedo 50 glacial interglacial 50 springtime ozone 50 Carbon dioxide concentrations 50 Ice Ages 50 Le Quéré 50 glacier shrinkage 50 El Ninos 50 Eemian 50 polar regions 50 Gerald Meehl 50 Ozone depletion 50 oceanic circulation 50 droughts heatwaves 50 Medieval Warm Period MWP 50 atmospheric ozone 50 #.#C [002] 50 severe droughts 50 greenhouses gases 50 nitrogen deposition 49 tropical deforestation 49 Corinne Le Quere 49 mesosphere 49 Rahmstorf 49 Carbon dioxide emissions 49 #.#C above 49 gaseous pollutants 49 heat trapping carbon dioxide 49 troposphere 49 CHAIRMAN CONNAUGHTON Well 49 interglacial periods 49 greenhouse gases GHGs 49 mass extinction 49 mid Pliocene 49 climate modellers 49 carbon dioxide CO2 49 interglacial 49 ghg emissions 49 ozone depleting chemicals 49 acidic oceans 49 icesheets 49 oceans 49 CO -2 emissions 49 ozone 49 forcings 49 glacial melt 49 decadal 49 Species extinction 49 upper troposphere 49 carbon dioxide methane 49 tropical troposphere 49 preindustrial temperatures 49 paleoclimatic 49 anthropogenically 48 NCAR scientist 48 Greenland ice 48 droughts floods storms 48 poleward 48 latitudes 48 mountain glaciers 48 ozone depleting gases 48 Ocean acidification 48 GtC 48 anomalously warm 48 Antarctic ozone 48 heat trapping greenhouse gas 48 volcanism 48 degrees Fahrenheit above preindustrial 48 deforestation 48 heatwaves 48 Carbon dioxide CO2 48 Carbon Dioxide 48 oxidized mercury 48 cryosphere 48 fluorinated gases 48 degrees Centigrade #.#F 48 tropospheric 48 paleoclimate 48 glacier retreat 48 CO -2 48 Greenland icesheet 48 terrestrial ecosystems 48 CO ² 48 Eric Rignot 48 nitrogen oxide NOx emissions 48 amphibian declines 48 Co2 48 phosphorus concentrations 48 climatic variations 48 Arctic ozone depletion 48 Carbon dioxide CO2 emissions 48 anthropogenic aerosols 48 sunspot cycle 48 aerosol particles 48 Greenland Ice 48 polar icecap 48 terrestrial biosphere 48 stratospheric ozone depletion 47 nitrous oxide N2O 47 subtropical regions 47 atmospheric aerosols 47 ultra violet radiation 47 GhG emissions 47 Southern Oscillation 47 sun irradiance 47 WMO 47 heatwaves floods droughts 47 floods droughts 47 meteorite bombardment 47 equatorial Pacific Ocean 47 Global warming 47 alpine glaciers 47 floods droughts heatwaves 47 emissions 47 midlatitudes 47 Nielsen Gammon 47 chloride concentrations 47 galactic cosmic rays 47 acidification 47 carbondioxide emissions 47 potent greenhouse gas 47 burning fossil fuels 47 heat trapping gasses 47 streamflow 47 Stefan Rahmstorf 47 IPCC 47 warmer wetter winters 47 IPCC AR4 47 cosmic ray intensity 47 Climate Change IPCC 47 Ken Herkenhoff 47 heat trapping emissions 47 Earth axial tilt 47 produced Friedlingstein 47 GHG emissions 47 methane concentrations 47 auroral activity 47 water vapor 47 GHG reductions 47 Earth ozone layer 47 vertical wind shear 47 heat trapping greenhouse 47 coral bleaching 46 volcanic aerosols 46 ozone depleting compounds 46 Govindasamy Bala 46 floods heatwaves droughts 46 Wm -2 46 phytoplankton blooms 46 hydrologic cycle 46 authors Kevin Trenberth 46 megafires 46 greenhouse gas 46 heat trapping 46 Nitrogen oxides 46 Climate Change UNFCC 46 degrees Celsius #.#F [001] 46 hydrosphere 46 glacial retreat 46 melting glaciers 46 carbon emissions 46 nitrogen oxides emitted 46 Jonathan Overpeck 46 Anthropocene 46 heatwaves floods 46 degree Centigrade 46 Climate Impact 46 volcanic activity 46 #.#-#.# degrees Fahrenheit [002] 46 ozone depleting substances 46 polar ice 46 glaciers 46 seawater pH 46 earths 46 GOSAT 46 heatwaves droughts floods 46 CO2 emissions 46 salinities 46 deep convective clouds 46 Thawing permafrost 46 reactive nitrogen 46 manmade global warming 46 Appy Sluijs 46 Corinne Le Quéré 46 Keeling Curve 46 emmissions 46 2 MeV electron 46 thermohaline circulation 46 climate alarmists 46 Bedritsky 46 Noah Diffenbaugh 46 Otto Bliesner 46 La Ninas 46 radiometric measurements 46 icecap 46 SOx emissions 46 nitrous oxides 46 heatwaves droughts 46 global warming gases 46 Medieval Warming Period 46 geosynchronous orbit reached 46 polar icecaps 46 satellite altimetry 46 global weirding 46 organic pollutants POPs 46 degrees Fahrenheit warmer 46 El Nino warming 46 La Nià ± 46 carbon dioxide CO ² 46 greenhouse gas GHG emissions 46 Industrialized nations 46 Last Glacial Maximum 46 CO ² emissions 45 Younger Dryas 45 Aiguo Dai 45 longwave radiation 45 pika habitat 45 landfalling hurricanes 45 Polar Regions 45 Serreze 45 temperatures 45 Brenda Ekwurzel climate 45 melt Himalayan glaciers 45 Climatologists 45 emission reductions 45 storminess 45 SST anomalies 45 GHG emission 45 Co2 emissions 45 glacial ice 45 Luterbacher 45 substorms 45 nitrous oxide emissions 45 geological epoch 45 SSTs 45 permafrost 45 Snowball Earth 45 Climatic Change 45 iron fertilization 45 Indian Ocean Dipole 45 cyclones droughts 45 interglacials 45 stabilizing atmospheric concentrations 45 geological timescales 45 solar nebula 45 2degC 45 climate 45 Milankovitch cycles 45 sunspots 45 Paleocene Eocene Thermal Maximum 45 mantle plumes 45 drylands 45 N2O 45 Nasa Goddard Institute 45 polar latitudes 45 supervolcanoes 45 droughts floods heatwaves 45 mercury emissions 45 ozone layer 45 Medieval Warming 45 storms floods droughts 45 F above preindustrial 45 warming gases 45 tropical latitudes 45 polar vortex 45 Ulysses spacecraft 45 droughts heatwaves floods 45 icecaps 45 salinity 45 crop yields 45 climatologists 45 Orjan Gustafsson 45 AGW hypothesis 45 increased storminess 45 multi decadal signal 45 GISS analysis 45 tectonic plate movements 45 carbonate minerals 45 permafrost degradation 45 biodiversity 45 harmful ultraviolet UV radiation 45 Schladow 45 Paleoclimate 45 GHG emitters 45 Weiqing Han 44 relative humidities 44 La Niña pattern 44 C# emissions 44 colder drier 44 temperature reconstructions 44 temperature gradients 44 ocean fertilization 44 teragrams 44 Melting glaciers 44 Jay Lawrimore chief 44 coccolithophores 44 Atlantic Multidecadal Oscillation AMO 44 stockpiled warheads 44 Jevrejeva 44 degree Fahrenheit 44 Amundsen Sea 44 melt glaciers 44 substorm 44 tropospheric temperature 44 emissons 44 Montreal Protocol 44 emmission 44 cosmic rays 44 undernutrition 44 geomagnetic field 44 Gerald Meehl senior 44 biosequestration 44 sulfur dioxide emissions 44 decarbonization 44 heat trapping gases emitted 44 AR4 44 Min Temp #.# 44 exosphere 44 irradiance 44 Carbon dioxide 44 gigatonne 44 Dr Raupach 44 protective ozone layer 44 sulfur dioxide SO2 44 Palaeocene Eocene thermal 44 boreal regions 44 ENSO cycle 44 degree centigrade 44 hotter drier summers 44 biosphere 44 hotter summers 44 Intergovernment Panel 44 Antarctic glaciers 44 asteroid impacts 44 interannual variability 44 Antarctic stratosphere 44 humidex values 44 La Nina cooling 44 atmospheric oceanic 44 Greenhouse Gases 44 magnetic substorms 44 multi decadal 44 climate forcings 44 Ultraviolet radiation 44 IPCC Intergovernmental Panel 44 Bill Chameides 44 Antarctic ice 44 greenhouse emission 44 Romero Lankao 44 nitrification 44 Waleed Abdalati director 44 Pacific Decadal Oscillation 44 temperate zones 44 Kyoto protocol expires 44 sulphate particles 44 subsurface ocean 44 co2 emissions 44 greenhouse gases emitted 44 manmade greenhouse gas 44 worsening droughts 44 Schellnhuber 44 IGBP 44 Atlantic thermohaline circulation 44 Climate Change 44 dustier stormier atmosphere 44 Younger Dryas cold 44 nitrogen fixation 44 La Nina 44 stabilize atmospheric concentrations 44 icesheet 44 geomagnetic substorms 44 warmer wetter 44 decadal scale 44 disappearing glaciers 44 GHGs emitted 44 Jarraud 44 geoengineering schemes 44 aerosols 44 Glacial melt 44 Warmer seas 44 NSIDC 44 Pielke 43 solar corona 43 globalwarming 43 GHG pollution 43 carbon dioxide CO2 emissions 43 fine particle pollution 43 anthropogenic CO 43 runaway greenhouse 43 permafrost melts 43 Great Oxidation Event 43 solar minima 43 Cryospheric Sciences Branch 43 acidifying 43 El Niño La Niña 43 airborne pollutant 43 El Nino Southern Oscillation 43 situ measurements 43 Geoengineering 43 orbital eccentricity 43 meteorite impacts 43 atmospheric ozone layer 43 glaciation 43 carbon dioxide emission 43 Caspar Ammann 43 Velicogna 43 glacier melting 43 climate modeler 43 cirrus clouds 43 Emissions 43 acidifying oceans 43 eastern equatorial Pacific 43 Malte Meinshausen 43 Industrialized countries 43 sunspot numbers 43 Climatic Optimum 43 Kyoto Protocols 43 methane 43 Earth biosphere 43 greenhouse gas GHG emission 43 subglacial lakes 43 Celsius #.#F 43 warming 43 Global Warming Potential GWP 43 sulfate aerosol 43 Holocene 43 nutrient loading 43 Arctic permafrost 43 CO2 emission reductions 43 NOX emissions 43 retreating glaciers 43 central equatorial Pacific 43 Madden Julian Oscillation 43 Copenhagen Diagnosis 43 degree Celsius 43 locust upsurge 43 Millennium Ecosystem Assessment 43 amplification Zwally 43 Extinctions 43 carbon dioxide CO2 emitted 43 insect populations 43 International Geosphere Biosphere 43 warm interglacial 43 Omar Baddour 43 harmful tailpipe emissions 43 Georges Charpak France 43 waterbird populations 43 megafauna extinction 43 Carbon dioxide emission 43 W/m2 43 quantified emission 43 chlorine monoxide 43 Marijuana potency 43 Alaskan glaciers 43 Mass Extinctions 43 Czech Hydrometeorological Institute 43 emmisions 43 Min temp 43 sun ultraviolet radiation 43 gases 43 GCRs 43 Bio SNG 43 World Meteorological Organization 43 Sulfur Dioxide 43 Halifax Weather Overcast 43 Kyoto Accords 43 hydrothermal activity 43 glacier melt 43 thermosphere 43 SO2 emission 43 World Meteorological Organisation 43 advection 43 Solar Radiation 43 mantle convection 43 nitrogen oxides NOx emissions 43 Arctic oscillation 43 de carbonizing 43 atmospheric circulations 43 Acidification 43 Climate Impacts Group 43 ocean ecosystems 43 pregnancies Mishell 43 Climate Change IPPC 43 phytoplankton biomass 43 C# atmospheric concentrations 43 coronal heating 43 geoid 43 El Nio 43 Climate Prediction 43 CO2 eq 43 permafrost thaw 43 auroral displays 42 nutrient pollution 42 ENSO 42 pollutant emissions 42 oceanic currents 42 geomagnetic activity 42 Hesperian Epoch 42 degrees Fahrenheit 42 Nitrogen oxide emissions 42 glaciers retreating 42 Noctilucent clouds 42 coral calcification 42 Kim Carstensen WWF 42 lunar perigee 42 Marika Holland 42 nutrient runoff 42 UNCCD 42 coastal upwelling 42 Mud volcanoes 42 CHD mortality 42 CO ₂ 42 GEOSS 42 geomagnetic storms 42 Bindschadler 42 carbon sinks 42 Surface Temperature 42 methane burps 42 reducing carbon emissions 42 cosmic ray 42 Jakobshavn Isbrae 42 stratospheric ozone chemistry 42 coral reef degradation 42 alone Reheis Boyd 42 marine phytoplankton 42 eruptive activity 42 coronal hole 42 planetary 42 Pierre Friedlingstein 42 biogeochemical cycles 42 mercury pollution 42 drier summers 42 Cryogenian 42 sequestering carbon dioxide 42 Antarctic Ice 42 2ppm 42 Ken Caldeira 42 Bq/m3 42 Shakhova 42 C4 grasses 42 Antarctic Treaty Consultative 42 Jellyfish swarm northward 42 chlorofluorocarbons 42 Petoukhov 42 pollutant 42 Earth 42 hurricane landfalls 42 GOCE 42 Industrialised countries 42 Svante Arrhenius 42 metallicity 42 Volcanic eruptions 42 martian atmosphere 42 telescopic observations 42 Greenhouse Gas Bulletin 42 monsoon rainfall 42 paleoclimatology 42 El Niño Southern Oscillation 42 Warmer oceans 42 evapotranspiration 42 atmospheric nitrogen 42 polar bear populations 42 Milankovitch 42 NASA Goddard Institute 42 legally binding emission 42 polar mesospheric clouds 42 transboundary waters 42 warhead arsenals 42 greenhouse gas emission 42 floods droughts heat 42 Di Aping 42 permafrost thaws 42 fossil fuels 42 journal Meteoritics 42 nitrogen oxides carbon monoxide 42 megadrought 42 Roland Holst 42 Planetary Regime 42 Himalayan Glaciers 42 upwellings 42 global warming gasses 42 biodiversity hotspots 42 Tailpipe emissions 42 sequestering CO2 42 fissure eruption 42 anthropogenic global warming 42 Francesca Dominici 42 Strategic Offensive Reductions 42 preindustrial 42 stratospheric ozone layer 42 Earthlike planets 42 Permian Triassic 42 pollutants 42 Global Warming 42 Pleistocene Ice Age 42 RealFeel ® temperatures 42 droughts floods 42 midlatitude 42 tailpipe gases 42 legally binding instrument 42 climate modeller 42 manatee deaths 42 supermoons 42 nitrous oxide emission 42 degrees Celsius 42 soot smog 42 Explosive eruptions 42 El Nino periodic 42 Alpine glaciers 42 airglow 42 volcanic eruptions 42 Hoeppe 42 landmasses 42 electron density 42 Maryam Golnaraghi 42 warm interglacial periods 42 phonon 42 Lindzen 42 carbon dioxide CO2 emission 42 Fine particulate 42 downwelling 42 boreal ecosystems 42 El Nino La Nina 42 technologically tinker 42 AEO# reference case 42 Eta Aquarid meteor shower 42 albedo feedback 42 oxide hydrofluorocarbons perfluorocarbons 42 ocean salinity 42 Martin Sommerkorn 42 Cumbre Vieja 42 Natalia Shakhova 42 Jay Zwally 41 poleward shift 41 CryoSat mission 41 magnetosphere 41 temperate regions 41 Greenland icecap 41 Kyoto Protocol expires 41 Verolme 41 sulfur aerosols 41 dietary sodium 41 megatonnes 41 meteor impacts 41 Tropical deforestation 41 Paleocene Eocene thermal 41 ppm 41 Sumatra Andaman earthquake 41 nitrous oxides NOx 41 sulphates 41 Arctic Ocean 41 radiative 41 kyr 41 General Michel Jarraud 41 Fossil fuels 41 Jupiter icy moons 41 CO2 CH4 41 attosecond 41 chlorophyll concentrations 41 Hans Joachim Schellnhuber 41 IPBES 41 Harmful algal blooms 41 El Nino 41 Boreal forests 41 Gas Emissions 41 expose lairs 41 Plimer 41 ecoregions 41 Endocrine disruptors 41 Eaarth 41 freshwater ecosystems 41 greenhouse gas emission reductions 41 acid rain 41 magma ocean 41 annealing temperature 41 YU# 41 seafloor sediments 41 Equatorial Pacific 41 melting permafrost 41 methanogenesis 41 planet 41 ecological overshoot 41 Simone Tilmes 41 electron flux 41 decoherence 41 precipitation 41 negotiator Yvo de 41 penumbral lunar eclipse 41 glaciological 41 catastrophic floods droughts 41 Indian climatologist Rajendra 41 Venus transits 41 groundwater withdrawals 41 bee populations 41 airborne pollutants 41 Fomalhaut b 41 temperature inversions 41 melting icecaps 41 upwelling currents 41 Cancri e 41 climatic 41 palaeoclimate 41 gamma ray burst 41 Crutzen 41 carbon emmissions 41 infrared radiation 41 Cassini ion 41 reionization 41 clathrates 41 CO2e 41 mercury emitted 41 fainter objects 41 GHG 41 equatorial regions 41 emission 41 ultraviolet radiation emitted 41 air toxics 41 isostatic rebound 41 megadroughts 41 Methane Emissions 41 harmful algal blooms 41 exceedences 41 waves droughts floods 41 PM#.# 41 Anthony Barnosky 41 #.#F [001] 41 exajoules 41 landfalling 41 observable phenomena 41 JIMO 41 WASP #b 41 Climate Change Secretariat 41 influenza pandemics 41 glacial cycles 41 harmful ultraviolet radiation 41 La Niña 41 Droughts 41 UNFCCC Executive 41 perfluorocarbons 41 chytrid 41 La Niñas 41 earths surface 41 daytime temperatures 41 Nature Geoscience journal 41 Svedhem 41 Michel Jarraud 41 ENSO El Nino 41 Svensmark 41 GHG emission reductions 41 Eocene epoch 41 southernmost continent 41 natural catastrophes 41 Rayleigh scattering 41 lithosphere 41 tropical forests 41 snowier winters 41 elephant poaching 41 paleoclimatologists 41 fine particulate pollution 41 Mausumi Dikpati 41 hydroxyl radical 41 Cow burps 41 Laurentide ice sheet 41 Current Warm Period 41 ozone depleting substance 41 geoengineering 41 tropical cyclone formation 41 insolation 41 heat trapping carbon emissions 41 UNEP WCMC 41 atmospheric moisture 41 Climate Impact Assessment 41 crustal rocks 41 humidities 41 gigaton 41 Cloudiness 41 Melting Glaciers 41 Interglacial 41 thermal gradients 41 Deforestation 41 Eumetsat 41 sealevel 41 particulate pollution 41 orangutan populations 41 UNFCC 41 bacteria Streptococcus pneumoniae 41 KT boundary 41 Late Paleozoic 41 photochemical reactions 41 terawatts 41 isoprene 41 Bounoua 40 explosive eruptions 40 Raupach 40 coolings 40 Behrenfeld 40 carbon emission 40 Corot 9b 40 Jonathan Patz 40 biogenic emissions 40 #.#C #.#F [004] 40 Christopher Flavin 40 groundwater depletion 40 -# degrees Celsius [001] 40 Pliocene 40 soil carbon sequestration 40 oscillations 40 Hamish Pritchard 40 Systems GEOSS 40 YORP effect 40 Peter Frumhoff 40 Drew Shindell 40 ozone pollutant 40 hydrofluorocarbons HFCs 40 seismicity 40 melts Himalayan glaciers 40 NASA satellites orbiting 40 Jane Ferrigno 40 El Ni 40 Climate 40 asteroid collisions 40 PAH compounds 40 slender crescent 40 CarbonTracker 40 ecosystems 40 Antarctica 40 COROT 40 EPA Greenhouse gases 40 Dansgaard Oeschger 40 Protectionist pressures 40 Carbon Dioxide Emissions 40 carbon emission reductions 40 hypoxic zone 40 carbon dioxide equivalent CO2e 40 ratifying Kyoto 40 inundate coastal 40 involuntary mobilizations 40 droughts 40 Abdalati 40 Greenhouse Gases GHG 40 ozone particulate matter 40 Earth Observation EO 40 Greenhouse Gas GHG emissions 40 carbon emitted 40 chlorofluorocarbons CFCs 40 heat trapping pollution 40 hydrochlorofluorocarbons HCFCs 40 oC 40 CO2e emissions 40 -# degrees Fahrenheit [002] 40 Elevated CO2 40 floods droughts mudslides 40 Julia Slingo 40 Earth rotational axis 40 hurricanes Landsea 40 Copenhagen Accord 40 methane clathrates 40 terrestrial planets 40 usual BAU 40 multidecadal 40 ectotherms 40 methane CH4 40 Meridiani 40 Atmospheric Chemistry 40 Konrad Steffen 40 coarse grains 40 CO2 fluxes 40 aphid populations 40 cryovolcanism 40 PETM 40 Bette Otto Bliesner 40 Salvano Briceno director 40 air pollution 40 tropospheric warming 40 meridional overturning circulation 40 ferroelectricity 40 Scambos 40 Gabriel Vecchi 40 tropics 40 Orbiting Carbon Observatory OCO 40 Joan Kleypas 40 sulfur isotope