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(Click for frequent words.) 70 ozone layer 70 stratospheric ozone layer 69 Earth ozone layer 68 atmospheric ozone 67 protective ozone layer 65 ozone 65 Antarctic ozone 64 ozone depleting gases 63 ozone depletion 62 stratospheric ozone depletion 62 carbon dioxide concentrations 61 atmospheric CO2 levels 61 Ozone layer 61 springtime ozone 60 chlorofluorocarbons CFCs 60 sulphate aerosols 60 atmospheric aerosols 60 atmospheric carbon dioxide 60 aerosol particles 59 aerosols 59 anthropogenic greenhouse gases 59 sulfate aerosols 59 atmospheric methane 59 ozone depleting compounds 58 oceanic circulation 58 upper troposphere 58 Ozone depletion 58 galactic cosmic rays 58 chlorine monoxide 58 chlorofluorocarbons 58 hydrological cycle 58 greenhouse warming 57 ozone depleting substances 57 mid latitudes 57 cryosphere 57 polar regions 57 terrestrial ecosystems 57 tropospheric ozone 57 exosphere 57 atmospheric CO2 57 atmospheric circulation 57 harmful ultraviolet UV radiation 57 sulfate aerosol 56 polar caps 56 ultra violet radiation 56 atmospheric CO 55 ultraviolet UV radiation 55 volcanic plumes 55 mesosphere 55 Milankovitch cycles 55 methyl chloroform 55 harmful ultraviolet radiation 55 Atlantic thermohaline circulation 55 radiative forcing 55 greenhouse gas concentrations 55 Rossby waves 55 deplete ozone 55 ocean acidity 55 CFCs 55 deep convective clouds 55 GHG concentrations 55 glacial interglacial cycles 55 CFCs chlorofluorocarbons 55 Greenland glaciers 55 hydrologic cycle 54 gaseous pollutants 54 martian atmosphere 54 subglacial lakes 54 sulfur isotope 54 Ocean acidification 54 polar vortex 54 midlatitudes 54 oxidized mercury 54 troposphere 54 ozone depleting chemicals 54 atmospheric pollutants 54 sun ultraviolet radiation 54 CO2 concentrations 54 thermosphere 54 deglaciation 54 sulfur dioxide SO2 54 tropopause 54 marine phytoplankton 54 Ulysses spacecraft 54 icesheets 53 Kharecha 53 reef habitats 53 Carbon dioxide CO2 53 atmospheric chemistry 53 Sulfur dioxide 53 icesheet 53 acidification 53 Stratospheric ozone 53 airglow 53 albedo feedback 53 tropospheric 53 Chlorofluorocarbons CFCs 53 Palaeocene Eocene Thermal Maximum 53 Antarctic stratosphere 53 damaging ultraviolet rays 53 water vapor 53 boreal ecosystems 53 subsurface ocean 53 Ultraviolet radiation 53 hydroxyl radical 53 ozone depleting substance 53 ocean ecosystems 53 Ozone Layer 52 anthropogenic greenhouse gas 52 magnetosphere 52 solar irradiance 52 anthropogenic CO2 emissions 52 stratospheric clouds 52 axial tilt 52 anthropogenically 52 Ultraviolet rays 52 chlorine peroxide 52 ozone layer shielding 52 ultraviolet UV rays 52 icecaps 52 marine sediments 52 anthropogenic carbon dioxide 52 GJ#b 52 aerosol concentrations 52 Atmospheric CO2 52 micro meteorites 52 ultraviolet radiation emitted 52 sulfur aerosols 52 ionosphere 52 planet magnetosphere 52 Warmer oceans 52 lithosphere 52 sulphate particles 52 Antarctic ice 52 coccolithophores 52 meridional overturning circulation 52 longwave radiation 51 climate modellers 51 Mercury exosphere 51 chlorofluorocarbon 51 reef ecosystems 51 anthropogenic warming 51 halons 51 cosmic ray flux 51 atmospheric moisture 51 Greenland icesheet 51 marine ecosystems 51 nitrogen trifluoride 51 ocean basins 51 CFC propellants 51 Saharan dust 51 carbon sinks 51 Thawing permafrost 51 biogeochemical cycles 51 ozone layer depletion 51 carbon dioxide 51 albedo 51 ocean acidification 51 volcanic aerosols 51 Nitrogen oxides 51 ozone O3 51 magnetospheric 51 mountain glaciers 51 crustal 51 poleward 51 aboard ESA Envisat 51 atmospheric 51 greenhouse gases GHGs 51 photochemical smog 51 NASA QuikScat satellite 51 SeaWiFS 51 phytoplankton blooms 51 carbonate minerals 51 Earth ionosphere 51 thermohaline circulation 51 polar mesospheric clouds 51 interannual variability 51 magnetic substorms 51 martian meteorites 51 tailpipe gases 51 cosmic ray intensity 51 volcanic eruptions 51 Martian atmosphere 51 multi decadal 51 ultraviolet UV light 50 Orbiting Carbon Observatory OCO 50 carbonyl sulfide 50 anthropogenic emissions 50 carbon dioxide CO2 50 chlorofluorocarbon gases 50 oceans 50 runaway greenhouse 50 blocks harmful ultraviolet 50 thermal inertia 50 Cryogenian 50 climate forcings 50 Earth biosphere 50 sun ultraviolet rays 50 potent greenhouse gas 50 Amundsen Sea 50 fluorinated gases 50 tropical troposphere 50 ozone depleting chlorofluorocarbons 50 jovian 50 glacial interglacial 50 cosmic rays 50 glaciers 50 Southern Annular Mode 50 glacier retreat 50 atmospheric concentrations 50 meteoritic material 50 sulfuryl fluoride 50 volcanism 50 Greenland ice 50 hydrochlorofluorocarbons HCFCs 50 Antarctic glaciers 50 isotope fractionation 50 hydroxyl radicals 50 metallicity 50 APXS 50 meteorite impacts 50 Laurentide ice sheet 50 carbonate globules 50 hydrofluorocarbons HFCs 50 seawater pH 50 Chlorofluorocarbons 50 Ultrafine particles 50 alpine glaciers 50 anthropogenic 50 Polar Regions 50 El Niños 50 Greenhouse gases 50 biosphere 50 telescopic observations 49 fluorocarbons 49 basaltic rocks 49 nightglow 49 atmospheric CO2 concentration 49 atmospheric CO2 concentrations 49 Southern Oscillation 49 Ozone Depletion 49 melting permafrost 49 magnetic reconnection 49 clathrates 49 ozone particulates 49 asteroid impacts 49 equatorial Pacific Ocean 49 impactors 49 Nitrogen oxide 49 geomagnetic substorms 49 ENSO cycle 49 osmotic stress 49 specular reflection 49 ultra violet rays 49 teleconnections 49 ppmv 49 magnetic polarity 49 Permian extinction 49 acrolein 49 deca BDE 49 amplifying feedbacks 49 atmospheric turbulence 49 atmospheric ozone layer 49 Global Warming Potential GWP 49 acid rain 49 Rayleigh scattering 49 Boreal forests 49 Amazonian forest 49 GOSAT 49 mantle convection 49 Velicogna 49 SCIAMACHY 49 biogeochemical processes 49 peroxynitrite 49 Antarctic glacier 49 Ozone Hole 49 hydrosphere 49 mammal extinctions 49 zinc oxide nanoparticles 49 Total Ozone Mapping 49 hydrofluorocarbon 49 carbon tetrachloride 49 aquatic ecosystems 49 amphibian populations 49 Antarctic ozone layer 49 Maunder minimum 49 flood basalts 49 Le Quéré 49 aerosol propellants 49 mantle plumes 49 oxidants 49 harmful ultraviolet 49 climatic variability 49 post perovskite 49 peat lands 49 warmings 49 soot smog 49 acidic oceans 48 microplastics 48 Warmer seas 48 ozone pollutant 48 COROT 7b 48 thermal diffusivity 48 manmade greenhouse gas 48 Keeling Curve 48 Kilimanjaro glaciers 48 iceberg calving 48 isoprene 48 subglacial 48 coral reef ecosystems 48 hypoxic zone 48 reactive nitrogen 48 ozone depleting CFCs 48 KT boundary 48 biogeochemical 48 Arctic oscillation 48 glaciological 48 Saturn magnetosphere 48 cosmic ray 48 osmium 48 coral bleaching 48 phytoplankton 48 Ocean Acidification 48 chlorofluorocarbons CFC 48 dwelling organisms 48 ultraviolet radiation 48 moons Europa 48 polar latitudes 48 oxide hydrofluorocarbons perfluorocarbons 48 R #a refrigerant 48 Saturn auroras 48 inorganic mercury 48 Venusian atmosphere 48 laser irradiation 48 Brigham Grette 48 chloroflourocarbons 48 Govindasamy Bala 48 photochemical reactions 48 poleward shift 48 orbiting gamma ray 48 chytrid 48 hydrofluorocarbon HFC 48 climate modelers 48 greenhouse gases GHG 48 Last Glacial Maximum 48 forams 48 permafrost 48 Arctic icecap 48 Mercury flyby 48 geomagnetic storms 48 total solar irradiance 48 galactic disk 48 lowermost mantle 48 sun irradiance 48 cyclonic storms 48 PFCAs 48 icecap 48 situ measurements 48 Keck Interferometer 48 Nitrogen dioxide 48 glacial meltwater 48 Montreal Protocol 48 Saturnian 48 nitrogen deposition 48 Greenland Ice 48 Alpine glaciers 48 permafrost degradation 48 landmasses 48 Cassini ion 48 mineralogical composition 48 sulphates 48 carcinogenic polycyclic aromatic hydrocarbons 48 anthropogenic aerosols 48 author Ken Caldeira 48 radioactive decay 48 Earth orbiting satellites 48 noble gases 48 Einstein relativity theory 48 Mount Kilimanjaro glaciers 48 Svedhem 48 acidifying oceans 48 EPOCh 48 Ross Salawitch 48 vegetation greenness 48 ICESat 48 glaciations 48 permafrost thaws 48 solar flares 48 tropical forests 47 Eric Rignot 47 oVOCs 47 moon gravitational pull 47 ozone pollution 47 methane 47 equatorial latitudes 47 planetary atmospheres 47 ultra violet UV rays 47 sulfur gases 47 ionospheric 47 bioaccumulative 47 Younger Dryas 47 microcystins 47 phytoplankton bloom 47 ecosystems 47 midlatitude 47 Type Ia supernovas 47 permafrost melts 47 laser altimeter 47 microlensing 47 hydrophobicity 47 Greenhouse gasses 47 Carbon dioxide 47 Ozone Depleting Substances ODS 47 Planetary Fourier Spectrometer PFS 47 El Niño Southern Oscillation 47 endocrine disrupting compounds 47 species extinctions 47 depleting substances 47 harmful ultraviolet rays 47 polar oceans 47 greenhouse gases 47 UV radiation 47 ferric oxides 47 thirdhand smoke 47 advection 47 seabed sediments 47 outlet glaciers 47 perfluorocarbons PFCs 47 PAH compounds 47 ferroelectricity 47 gases 47 Noctilucent clouds 47 Earth Observation EO 47 CO2 47 climatic variations 47 Murchison meteorite 47 gravitational radiation 47 polar ice 47 Harmful algal blooms 47 oxygen isotope 47 Climate Experiment 47 Zeebe 47 Methylmercury 47 tectonic uplift 47 Orbiting Carbon Observatory 47 deepwater corals 47 radiative 47 Himalayan river basins 47 cloud condensation nuclei 47 amphibian declines 47 infrared spectral 47 interglacial periods 47 atmospheric aerosol 47 halocarbons 47 peatlands 47 tiny airborne particles 47 Antarctica 47 glacier melts 47 chlorofluorocarbon CFC 47 anthropogenic CO2 47 anthropogenic CO 47 Acidification 47 YORP effect 47 seafloor sediments 47 atmospheric circulations 47 isotopic 47 solar corona 47 heliosphere 47 cockroach allergens 47 tectonic plate movements 47 sub glacial lakes 47 Methyl mercury 47 Cryospheric Sciences Branch 47 manmade CO2 emissions 47 Endocrine disruptors 47 substorm 47 convective storms 47 chemical reactivity 47 El Nino warming 47 sulfuric acid mist 47 endocrine disrupting chemicals EDCs 47 Klekociuk 47 planet habitability 47 elemental composition 47 continental crust 47 carbon dioxide CO ² 47 Joan Kleypas 47 Earth magnetosphere 47 Antarctic icesheet 47 icy moons 47 Fomalhaut b 47 Nature Geoscience journal 47 shrinking glaciers 47 polycyclic aromatic hydrocarbons PAHs 47 glacial cycles 47 recrystallization 47 Carbon Dioxide 47 chlorine byproducts 47 greenhouse gasses 47 CarbonTracker 47 Indian Ocean Dipole 47 soot particles 47 Toxics Release Inventory TRI 47 stellar occultation 47 cometary material 47 methane CH4 47 spectroscopic analysis 47 orbiting observatories 47 polar stratospheric 47 relativistic particles 47 Aram Chaos 47 collisional 47 ozone concentrations 47 Jupiter moon Io 47 superoxides 47 coastal mangrove forests 47 Tagish Lake meteorite 47 eruptive activity 47 Larsen Ice Shelf 47 greenhouse gas 47 Sulphur dioxide 47 Coral bleaching 47 ice nucleation 47 glaciation 47 glycation 47 greenhouse gas nitrous oxide 47 active volcanism 47 airborne pollutants 46 noctilucent clouds 46 Envisat satellite 46 NCAR scientist 46 earths 46 Space Studies GISS 46 backscattering 46 tiny single celled 46 Warmer drier weather 46 El Nino periodic 46 Martian meteorites 46 HABs 46 dental enamel 46 tropical savanna 46 ozone particulate matter 46 volcanic plume 46 temperature gradients 46 volcanoes erupt 46 particulate matter nitrogen oxides 46 ionized particles 46 Solar Radiation 46 carbondioxide 46 gamma ray flashes 46 Atlantic Multidecadal Oscillation AMO 46 X ray emission 46 meteoroid 46 Volatile organic compounds 46 interferometric synthetic aperture radar 46 photometer 46 Reactive oxygen species 46 pollutant ozone 46 solar nebula 46 heme oxygenase 46 anthropogenic interference 46 Paleocene Eocene Thermal Maximum 46 ppm CO2 46 damaging ultraviolet radiation 46 tectonic stresses 46 icy comets 46 lunar crust 46 radar altimetry 46 fluorotelomers 46 superheavy elements 46 W boson 46 coral reefs 46 mangrove ecosystems 46 atmospheric convection 46 Arctic permafrost 46 Particulates 46 biodiverse ecosystems 46 magnetotail 46 geoengineering schemes 46 Siberian Traps 46 interstellar clouds 46 surface temperatures SSTs 46 chemical ammonium perfluorooctanoate 46 Appy Sluijs 46 retreating glaciers 46 forest ecosystems 46 Halons 46 moon permanently shadowed 46 Dr van Ommen 46 methanogenesis 46 neutron spectrometer 46 glacial melting 46 Elevated concentrations 46 paleoclimatic 46 biodiversity 46 Nitrogen trifluoride 46 ultraviolet wavelengths 46 meridional flow 46 proto planetary disk 46 radiative transfer 46 OGLE TR #b 46 sediments deposited 46 Toba eruption 46 atmospheric oceanic 46 spectroscopic technique 46 airborne particulate matter 46 Noah Diffenbaugh 46 exhaust plume 46 biomagnification 46 Weiqing Han 46 Younger Dryas cold 46 Otto Bliesner 46 airborne particulate 46 chlorophyll fluorescence 46 Carl Gustaf Lundin 46 subtropics 46 nitrogen oxide NOX 46 ozone smog 46 X ray wavelengths 46 Antarctic 46 nitrogen fixation 46 geological timescales 46 Gamma ray burst 46 planetary warming 46 Antarctica EPICA 46 polar icecap 46 neutral mass spectrometer 46 supervolcanoes 46 unconventional superconductivity 46 diffusive 46 seagrass meadows 46 #.#oC [001] 46 Himalayan Glaciers 46 WMO 46 Tropical Rainfall Measuring 46 smallest exoplanet 46 McMurdo Dry Valleys 46 carcinogenic compounds 46 terrestrial biosphere 46 geoneutrinos 46 #.#C #.#C 46 hydrated minerals 46 anthropogenic climate 46 dieldrin 46 isotope composition 46 Martian meteorite 46 Schladow 46 Cabeus 46 Gondwana supercontinent 46 CryoSat mission 46 Aerosols 46 Isabella Velicogna 46 oxidising 46 Cumbre Vieja 46 radioactive nuclei 46 manmade greenhouse gases 46 methane clathrate 46 olivines 46 Cosmic Background Explorer COBE 46 Arecibo radar 46 hydroxyl 46 Chicxulub impact 46 coastal upwelling 46 carbonate ion 46 stratospheric ozone chemistry 46 sea turtle populations 46 sulfur dioxide 46 Cancri e 46 Plate tectonics 46 paleomagnetic 46 sulfate particles 46 N2O emissions 46 P/# A2 46 downwelling 46 Canadell 46 phytoplankton populations 46 fissure eruption 46 Hotter drier 46 Anthropogenic 46 tropospheric temperature 46 Tharsis Rise 46 isotope ratios 46 phyllosilicate 46 calcium carbonate shells 46 Siple Dome 46 El Ninos 46 pressure natriuresis 46 foraminifera 46 comets asteroids 46 Upsilon Andromedae b 46 permafrost thaw 46 asthenosphere 46 galaxy redshift 46 ESA Envisat satellite 46 glacial ice 46 earthshine 46 binary asteroid 46 plankton blooms 46 Avobenzone 46 teragrams 46 supercooling 46 tooth enamel 46 meteoritic 46 SST anomalies 46 earth crust 46 coastal ecosystems 46 atmospheric disturbances 46 predatory fishes 46 DDT pesticide 46 condensation nuclei 46 Nasa Goddard Institute 46 QuikScat 45 airborne pollutant 45 Ed Laguerta 45 evapotranspiration 45 megafauna extinction 45 elevated atmospheric CO2 45 mutagens 45 Cosmic Microwave Background 45 spatially resolved 45 boreal forests 45 chondrules 45 glacial retreat 45 meteor impacts 45 HARPS instrument 45 meteoroids 45 paleoclimate 45 Greenland Glaciers 45 AATSR 45 thermal gradients 45 ubiquinol 45 chondritic meteorites 45 sequesters carbon 45 halon 45 Cryosat 45 anomalously warm 45 NSIDC 45 phyllosilicates 45 algal toxins 45 nitrification 45 fumigant methyl bromide 45 absorbs carbon dioxide 45 tectonic activity 45 micrometeoroids 45 cosmic ray particles 45 El Nino Southern Oscillation 45 oxidized lipids 45 halogenated hydrocarbons 45 UV irradiation 45 Alaskan glaciers 45 magma ocean 45 journal Meteoritics 45 Snowball Earth 45 aquatic biota 45 WMAP satellite 45 marine ecosystem 45 pollutant particles 45 Domoic acid neurotoxin 45 GHGs 45 extrasolar 45 toxaphene 45 gaseous envelope 45 bioaerosol 45 iodine uptake 45 perchlorate salts 45 graphite whiskers 45 #.#C [004] 45 cosmic radiation 45 eastern equatorial Pacific 45 wolverine habitat 45 silicate rocks 45 Neoproterozoic 45 decadal scale 45 nitrogen dioxide NO2 45 Permafrost 45 planets atmospheres 45 World Meteorological Organisation 45 Mercury magnetosphere 45 EPA Greenhouse gases 45 AB Aurigae 45 Antarctic Circumpolar Current 45 heat trapping pollutants 45 AERONET 45 oceanic currents 45 Nature Geosciences 45 organophosphorus pesticides 45 nitrous oxide N2O 45 ultraviolet sunlight 45 phenanthrene 45 crustal rocks 45 El Nio 45 sun UV rays 45 coronal loops 45 shadowed craters 45 neutrino detectors 45 gaseous methane 45 2oC 45 Cosmic Microwave Background CMB 45 invisible odorless tasteless 45 sunspot activity 45 radiosonde 45 QuikSCAT 45 organic compounds 45 coral reef degradation 45 olivine mineral 45 toxic alga 45 chloride concentrations 45 spectroscopic measurements 45 airborne particulates 45 biota 45 fainter objects 45 thermally activated 45 ochronosis 45 isotopic signature 45 particles emitted 45 sunspots 45 delicate ecosystems 45 furan 45 GJ #b [001] 45 moonlets 45 Earth albedo 45 TiO2 nanoparticles 45 chromosphere 45 particulate pollutants 45 Antarctic krill 45 mesospheric 45 Mauna Loa Observatory 45 seamounts 45 chlorophyll 45 Nanobacteria 45 polyamines 45 microwave radiation 45 El Niño La Niña 45 silicon monoxide 45 di GMP 45 deca BDEs 45 prenatal exposures 45 Ultraviolet UV radiation 45 Chicxulub Crater 45 paleoclimatologists 45 methyl cyanide 45 WASP #b 45 Atlantic meridional overturning 45 sheet Summerhayes 45 Laurentide Ice Sheet 45 mineral olivine 45 radioactive nuclides 45 polar bear habitat 45 tholins 45 Antarctic Treaty System 45 migratory bird populations 45 ultrafine particles 45 Polycyclic aromatic hydrocarbons 45 perfluorinated chemicals 45 bacterial decomposition 45 CO ² 45 water vapor condenses 45 boreal regions 45 elemental mercury 45 PFOAs 45 chlorinated compounds 45 Nili Fossae 45 carbon monoxide nitrogen dioxide 45 thermal decomposition 45 Martian dust 45 silicates 45 hydrazine tank 45 outgassing 45 convective clouds 45 vertical wind shear 45 UVA radiation 45 dynamical processes 45 spicules 45 Earth crust 45 Mount Stromlo Observatory 45 SPICAM 45 AMSR E 45 Hellas Basin 45 geoid 45 polarimetry 45 Rignot 45 alpha particles 45 planet HD #b 45 albedo reflectivity 45 Eberswalde crater 45 Hot Jupiters 45 mitochondrial function 45 Particulate Matter PM 45 supernova explosion 45 NASA Far Ultraviolet 45 scale invariance 45 xenobiotic 45 Planck satellite 45 radiational 45 La Nina cooling 45 atmospheric nitrogen 45 FalconSat 2 45 biogeochemical cycling 45 GZK cutoff 45 iron sulfate 45 insect populations 45 radar interferometry 45 Ontario Lacus 45 Jakobshavn 45 hematite mineral 45 ESA XMM Newton 45 convection currents 45 photochemistry 45 evaporite deposits 45 tropical latitudes 45 silicate minerals 45 organochlorine pesticides 45 nuclides 45 Jay Zwally 45 boreal forest 45 serum homocysteine 45 mercury potent neurotoxin 45 stellar seismology 45 ocean salinity 44 Saturn moon Mimas 44 Mount Pinatubo eruption 44 Betsy Weatherhead 44 gravitational interaction 44 asteroids comets 44 PBDEs polybrominated diphenyl ethers 44 ionospheric disturbances 44 NADH 44 Ultraviolet light 44 Whillans Ice Stream 44 fluorinated chemicals 44 GCRs 44 polarimetric 44 high redshift galaxies 44 ethylmercury 44 Francesca Dominici 44 scatterometer 44 walrus polar bears 44 Greenhouse Gases 44 polar bear populations 44 Wilkinson Microwave Anisotropy Probe 44 coralline algae 44 Quaternary Period 44 heptachlor 44 auroral activity 44 exoplanetary 44 isotopic ratios 44 B meson 44 sodium atoms 44 X ray telescopes 44 Mission TRMM 44 Particulate emissions 44 lithospheric 44 Huygens mission 44 satellite altimetry 44 peat soils 44 VIRTIS 44 Jupiter magnetosphere 44 gravitational microlensing 44 freshwater ecosystems 44 spacecraft flyby 44 sulfur hexafluoride 44 CAIs 44 sulfur dioxide pollution 44 cosmic microwave background 44 lipid membranes 44 Greenland Antarctica 44 proton decay 44 noctilucent cloud 44 homochirality 44 Behrenfeld 44 decadal 44 infra red radiation 44 groundwater seepage 44 perfluorinated compounds PFCs 44 nitrous oxide emissions 44 G#.# +#.# 44 galaxy formation 44 Fermi telescope 44 cometary dust 44 absorb carbon dioxide 44 galactic bulge 44 C# fullerenes 44 periodic dimming 44 isotopic compositions 44 EarthCARE 44 circumstellar 44 Qinghai Tibet Plateau 44 photolysis 44 pollutant 44 mimics estrogen 44 Pacific Decadal Oscillation 44 Shrinking glaciers 44 melt glaciers 44 nanoclays 44 Fram Strait 44 isotopic composition 44 N2O 44 electron neutrinos 44 cirrus clouds