AuraHomeAboutSpacecraft and InstrumentsWhy Aura?Science and DataData ResourcesScience FeaturesEducationNewsroom Aura Science Features Jump to Science Observations by Year 2023-2020 2019-2015 2014-2010 2009-2004 2023-2020 2023, MLSEarth’s ozone layer on track to recover within decades2023, OMIConstraining the Hydroxyl Radical in the Tropics2023, OMICombined Catalogue of Sulfur Dioxide Emissions2023, MLSEvolution of an Underwater Volcano2022, MLSTrends in Upper Stratospheric Chlorine2022, MLSMeasurements of an Underwater Volcano Eruption 2022, OMINASA Satellite Measurements Show Global-Scale Reductions in Tropospheric Ozone2022, OMISpatial and Temporal Variation of Near Surface Hydroxyl Radical in North American Cities2022, MLSThe SPARC Water Vapor Assessment II2022, MLSSingle-peak Structure in the Solar Cycle Signal in Stratospheric Ozone2022, MLSAnalysis of Recent Lower-Stratospheric Ozone Trends in Chemistry Climate Models2022, OMIRapid Rise in Premature Mortality Due to Anthropogenic Air Pollution in Fast-Growing Tropical Cities2022, OMIUsing Machine Learning for Timely Estimates of Ocean Color2022, OMIHyperspectral Underwater Ultraviolet Irradiances2022, OMITrends of Formaldehyde Linked to Anthropogenic Activity Over Large Cities2022, MLSStratospheric Impacts of the Australian New Year’s Fires2021, MLSSeasonal Stratospheric Ozone Trends2021, MLSResolving Seasonal Differences in Lower Stratosphere2021, OMIClimate Impact of Large Wildfires on Stratospheric Temperature2021, OMINitrogen Dioxide Data Show Urban Trends2021, OMIPredicting the Effect of Efforts to Contain the Spread of COVID-19 2021, OMISolar Activity and Responses Observed in Balmer Lines2020, OMIAir Quality Measurements from OMI during the 2020 U.S. Wildfire Season2020, MLSTransport From the Asian Summer Monsoon Anticyclone Over the Western Pacific 2019-2015 2019, OMIMid-Latitude Lightning Nitrogen Oxides Production Efficiency2019, OMISpatial Downscaling of Nitrogen Dioxide Data2019, MLSPlume from Australian Fires Influences Stratospheric Composition2019, OMIA Shifting Lifetime for Nitrogen Oxides2019, OMISolar Spectral Irradiances: Comparisons with Independent Datasets and Model Predictions2019, OMIThe Importance of Accounting for the Free Tropospheric Nitrogen Dioxide Background2019, OMIMapping Oxidizing Capacity of the Global Remote Troposphere2019, OMI, MLSTrends in Global Tropospheric Ozone2019, MLSStructural Changes in the Shallow and Transition Branch of the Brewer–Dobson Circulation Induced by El Niño2018, TESPeroxyacyl Nitrate in North American Biomass Burning Plumes2018, MLSEstimating Polar Middle Atmosphere Descent Rates from Changes in Carbon Monoxide2018, MLSWater Vapor, Clouds, and Saturation in the Tropical Tropopause Layer2018, OMIThe Relationship Between Sulfur Dioxide Data and Known Emissions Creates A Multi-Decade Record2018, OMIAmbient Surface Nitrogen Dioxide and Effects Globally on Asthma Exacerbation and Incidence2017, MLSUnusual Variability in Tropical Measurements2017, OMI, MLSThe Nature of Ozone in Deep Convective Clouds2017, OMIGround-Level Ozone Smog Sensitive to Two Key Ingredients2017, OMIUsing Aura OMI Data to Map Cancer Risks from Formaldehyde2016, OMIDetection of Missing Sulfur Dioxide Sources2015, TESLarge Biomass Burning Contribution to Urban Pollution 2014-2010 2014, OMIArctic Ozone in Spring2014, OMIImages Highlight U.S. Air Quality Improvement2014, OMI“Killer” Trees? Not Exactly2013, OMINew Algorithm Vastly Improves Measurements of Sulfur Dioxide Pollution from Space2013, MLSA Deep Ozone Hole in Spite of Low Chlorine: How Transport Affects Chemistry2013, OMIHomogenizing Global Sulfur Dioxide Measurements from Multiple Satellite Sensors2013, TESTES Measurements Demonstrate Ammonia Emissions are Under-reported2012, MLS, TESAura Illuminates the Signature of El Niño Southern Oscillation2012, OMINitrogen Dioxide and Sulfur Dioxide Over Canadian Oil Sands2012, OMIBromine Monoxide Enhancements Over the North Pole2012, HIRDLSGlobal Characteristics of the Double Tropopause2011, HIRDLS Stratosphere-Troposphere Intrusions2011, HIRDLSGravity Wave Momentum Fluxes in Monsoon Regions2011, HIRDLSGravity Wave Momentum Fluxes in Polar Regions2011, TESWater Vapor Isotopes2011, TESThe Greenhouse Effect of Tropospheric Ozone2010, OMIEyjafjallajökull Volcano Eruption2010, MLSInteractions Between Aerosol/Clouds/Water Vapor2010, HIRDLSMapping Cirrus Distribution 2010, OMI, MLSMerapi Volcanic Cloud 2009-2004 2009, OMINitrogen Dioxide Trends2009. OMIAir Quality Changes Resulting from Nitrogen Oxide Emission Regulations2008, OMISulfur Dioxide over Kilauea Volcano 2008, OMIMonitoring Air Quality During the Beijing Olympics2007, HIRDLSObservations of Laminar Cirrus Clouds2007, MLS'Double Record Breaker' Antarctic Ozone Hole2006, OMISulfur Dioxide Emissions from Smelters2006, OMI, MLSStreams of Ozone Crossing the Oceans2006, MLSCloud Ice in Upper Troposphere2006, HIRDLSSub-Visual Cirrus in the Upper Tropical Troposphere2006, MLSMeasurement of Carbon Monoxide in Upper Troposphere2006, MLSContinuous Measurement of Hydrochloric Acid in Stratosphere2006, MLSHydroxide in the Middle Stratosphere2006, HIRDLSSmall Scale Gravity Waves in the Stratosphere2005, OMINASA Satellite Eyes Atmosphere to Improve Pollution and Climate Forecasting2004, MLSObservations of Antarctic Polar Vortex Breakup