header

Science Features

View by Sensor
HIRDLS | MLS | OMI | TES

View by Year
'19 | '18 | '17 | '16 | '15 | '14 | '13 | '12 | '11 | '10 | '09 | '08 | '07 | '06 | '05 | '04

Science Features : OMI

The importance of accounting for the free tropospheric Nitrogen Dioxide background The importance of accounting for the free tropospheric Nitrogen Dioxide background
Using satellite observations of tropospheric Nitrogen Dioxide columns to infer long-term trends in US nitrogen oxide emissions.
 Mapping the Oxidizing Capacity of the Global Remote TroposphereMapping the Oxidizing Capacity of the Global Remote Troposphere
This new product represents a novel application of existing satellite data and will help us better interpret contemporary trends in the budgets of methane (a potent greenhouse gas) and ozone (a major pollutant and oxidant source).
OMI Tracks Changes in Mexico’s of Offshore Gas Flaring Activity OMI Tracks Changes in Mexico’s Offshore Gas Flaring Activity
Gas flaring from Mexico’s offshore oil fields leads to economic loss and emissions of air pollutants and greenhouse gases, and there are global efforts to reduce gas flaring.
OMI Links Decrease in Acid Deposition to Emission Reduction OMI Links Decrease in Acid Deposition to Emission Reduction in the Eastern U.S.
Introducing a new method using OMI observations to attribute decrease in acid deposition to SO2 emission reduction
>The Nature of Ozone in Deep Convective Clouds The Nature of Ozone in Deep Convective Clouds As Measured from Aura OMI/MLS
OMI satellite measurements reveal for the first time many key features of ozone variability inside deep convective clouds
Trends in Global Tropospheric Ozone Trends in Global Tropospheric Ozone Inferred from a Composite Record of TOMS/OMI/MLS/OMPS Satellite Measurements and the MERRA-2 GMI Simulation
OMI satellite measurements identify increases in tropospheric ozone over Saudi Arabia/India/Southeast Asia and other global regions
 Aura OMI International Team Awarded USGS 2018 Pecora Award Aura OMI International Team Awarded USGS 2018 Pecora Award
The Ozone Monitoring Instrument (OMI) International Team, consisting of Dutch, Finnish and American scientists, was awarded the 2018 William T. Pecora Award by the USGS.
 Nitrogen Dioxide Data to Show A Relationship Between Air Quality Changes & Economic Growth Globally  Nitrogen Dioxide Data to Show A Relationship Between Air Quality Changes & Economic Growth Globally
Satellites offer an unprecedented opportunity to evaluate patterns and trends in air pollution, especially in regions with few or no ground-based monitors.
 The 2018 National Academies’ Decadal Survey Highlights Aura Data to Demonstrate the Power of Satellite Data for Science & Societal Benefit  The 2018 National Academies’ Decadal Survey Highlights Aura Data to Demonstrate the Power of Satellite Data for Science & Societal Benefit
In "Thriving on Our Changing Planet: A Decadal Strategy for Earth Observation from Space”, Aura data were presented as examples of satellite observations used as a global monitoring system for air quality & health and stratospheric ozone.
 New Global Anthropogenic Sulfur Dioxide Emission Inventory   New Global Anthropogenic Sulfur Dioxide Emission Inventory
Sulfur dioxide measurements from the Ozone Monitoring Instrument (OMI) satellite sensor have been used to detect emissions from large point sources. Emissions from over 400 sources have been quantified individually based on OMI observations, accounting for about a half of total reported anthropogenic SO2 emissions.
  Application of sulfur dioxide observations supporting the cleantech industry’s goal of reducing air pollution  Application of sulfur dioxide observations supporting the cleantech industry’s goal of reducing air pollution
In this study, we present the result of the application of space-based sulfur dioxide (SO2) observations to evaluate the efficacy of cleantech solutions in reducing air polluting emissions from metal smelting.
  Ambient Surface Nitrogen Dioxide and Effects Globally on Asthma Exacerbation and Incidence Ambient Surface Nitrogen Dioxide and Effects Globally on Asthma Exacerbation and Incidence
Asthma is the most prevalent chronic respiratory disease worldwide, affecting 358 million people in 2015. Ambient air pollution exacerbates asthma among populations around the world and may also contribute to new-onset asthma.
 Aura Ozone Monitoring Instrument (OMI) sulfur dioxide & nitrogen dioxide products highlighted in recent air quality trends reports Aura Ozone Monitoring Instrument (OMI) sulfur dioxide & nitrogen dioxide products highlighted in recent air quality trends reports
OMI data are used in a variety of air quality applications, such as monitoring trends in air pollution.
 Nitrogen Dioxide Emission Reduction Slowdown Unexpected: Observed by Aura's Ozone Monitoring Instrument Nitrogen Dioxide Emission Reduction Slowdown Unexpected: Observed by Aura's Ozone Monitoring Instrument (OMI)
Ground and satellite observations show that air pollution regulations in the United States (US) have resulted in substantial reductions in emissions and corresponding improvements in air quality over the last several decades. However, large uncertainties remain in evaluating how recent regulations affect different emission sectors and pollutant trends.
Multiple Aura Datasets Contribute to the Tropospheric Ozone Assessment Report (TOAR) Multiple Aura Datasets Contribute to the Tropospheric Ozone Assessment Report (TOAR)
In the troposphere, ozone is both a major pollutant and a strong greenhouse gas. Although spaceborne and ground-based observations largely agree on the overall tropospheric ozone loading, estimates of decadal-scale trends vary significantly between datasets.
Ozone Monitoring Instrument: 14 years in space Ozone Monitoring Instrument: 14 years in space
This overview paper highlights the many ways that Aura Ozone Monitoring Instrument (OMI) data have advanced atmospheric composition research and benefited society.
Simulations Demonstrate How Convection & Chemistry Impact Mid-Tropospheric Ozone  Simulations Demonstrate How Convection & Chemistry Impact Mid-Tropospheric Ozone
NASA Goddard Earth Observing System Chemistry Climate Model (GEOSCCM) simulations reproduce the tropospheric ozone distribution observed by Aura OMI/MLS. The simulation shows that photochemical production exceeds loss throughout Tropics.
 Which processes drive observed variations of Formaldehyde columns over India? Which processes drive observed variations of Formaldehyde columns over India?
Formaldehyde (HCHO) plays a role in determining the oxidizing capacity of the global troposphere. The principal source of HCHO is the oxidation of methane (CH4), which provides a global ambient background. Minor direct HCHO sources include biomass burning, industry, agriculture, automobiles, shipping, and vegetation
 The Relationship Between OMI Sulfur Dioxide Data & Known Emissions Creates A Multi-Decade Record The Relationship Between OMI Sulfur Dioxide Data & Known Emissions Creates A Multi-Decade Record
Using Aura's Ozone Monitoring Instrument (OMI) sulfur dioxide data collected between 2005-2015, a multi-decade record was produced using prior SO2 emission data from 1980 to the present
 Ground-Level Ozone Smog Sensitive to Two Key Ingredients  Ground-Level Ozone Smog Sensitive to Two Key Ingredients
Satellite observations of Aura OMI formaldehyde and Nitrogen Dioxide to identify areas that would benefit more from reducing Nitrogen Oxide emissions versus reducing Volatile Organic Compound emissions.
A Decade of Changes in Nitrogen Oxides over U.S. Regions of Oil and Natural Gas  A Decade of Changes in Nitrogen Oxides over U.S. Regions of Oil and Natural Gas (ONG) Activity
This study shows the effect that shale oil and natural gas operations has had on tropospheric Nitrogen Dioxide levels in the Central Plains, and indicates the potential consequences for regional air quality.
Using Aura OMI data to map cancer risks from formaldehyde Using Aura OMI data to map cancer risks from formaldehyde
Formaldehyde is the top hazardous air pollutant of concern to EPA. It has a large natural atmospheric source from the oxidation of isoprene, a volatile organic compound emitted from trees, especially in the Southeast US.
The Nature of Ozone in Deep Convective Clouds  The Nature of Ozone in Deep Convective Clouds
Ozone within deep convective clouds is controlled by several factors involving photochemical reactions and transport. Gas-phase photochemical reactions and heterogeneous surface chemical reactions involving ice, water particles, and aerosols inside the clouds all contribute to the distribution and net production and loss of ozone.
 India Is Overtaking China as the World's Largest Emitter of Anthropogenic Sulfur Dioxide India Is Overtaking China as the World's Largest Emitter of Anthropogenic Sulfur Dioxide
Sulfate commonly makes up >10% of the fine particles in China and India, often much more during heavy pollution episodes. To predict and mitigate air pollution, air quality models require accurate information on the emissions of SO2 and other pollutants.
 Improvement in modeled tropospheric ozone Improvement in modeled tropospheric ozone
Tropospheric ozone is an important climate gas and an air pollutant. It plays a major role in tropospheric chemistry, such as serving as the main source for the hydroxyl radical, the atmosphere's primary oxidant.
science feature Decreasing Nitrogen Dioxide Levels
The Ozone Monitoring Instrument (OMI) animation of observations of decreasing nitrogen dioxide
science feature Long-Term Global Sulfur Dioxide Pollution Monitoring
From the Ozone Monitoring Instrument to the Ozone Mapping Profiler Suite : As Aura has entered the stage of extended mission and OMI has lost part of its spatial coverage due to instrument issues, it is critical to continue the global anthropogenic sulfur dioxide record with new instruments.
science feature New-generation OMI Volcanic Sulfur Dioxide Dataset and continuation with SNPP OMPS
As compared with the previous OMI data product, this new version significantly reduces retrieval bias for large volcanic eruptions and improves data quality for small degassing volcanoes.
science feature NASA Sulfur Dioxide Data Featured in New Volcanic Eruption Visualization
The Global Volcanism Program at the Smithsonian Institution National Museum of Natural History has created a new Eruptions, Earthquakes and Emissions web visualization using NASA volcanic sulfur dioxide data from multiple satellites.
science feature Study Estimates ~100,000 Premature Deaths from El Niño Fires in Equatorial Asia
GEOS-Chem adjoint study estimates ~100,000 premature deaths in Equatorial Asia due to severe, persistent smoke from the El Niño fires.
science feature Detection of missing sulfur dioxide sources
A new emission-source detection algorithm was applied to the measurements of sulfur dioxide from the Ozone Monitoring Instrument. It was used to compile the first global, satellite-based emissions inventory, and is completely independent of conventional information sources.
science feature Complex regional trends in two air pollutants
OMI instrument data shows nitrogen dioxide and sulfur dioxide changes over time.
science feature "Killer" Trees? Not Exactly
While some forests emit volatile organic compounds that are involved in ozone pollution, history shows attempts to control smog have a better chance of succeeding by focusing on vehicle emissions.
science featureOMI formaldehyde data product released
Formaldehyde (HCHO) in the atmosphere stems from pollution sources and biomass burning
science featureArctic Ozone in Spring
Though Earth's ozone layer has been depleted over the past four decades by chlorofluorocarbons (CFCs) and similar chemical compounds, the changes are expressed differently at the North and South Pole
science featureImages Highlight U.S. Air Quality Improvement
After ten years in orbit, the Ozone Monitoring Instrument (OMI) has been in orbit sufficiently long to show that people in major U.S. cities are breathing less nitrogen dioxide--a yellow-brown gas that can cause respiratory problems.
Ozone featureNew Algorithm Vastly Improves Measurements of SO2 Pollution from Space
Sulfur dioxide (SO2), emitted from both man-made and volcanic activities, significantly impact air quality and climate. Advanced sensors including the Ozone Monitoring Instrument (OMI) have been employed to measure SO2 pollution.
Ozone featureNASA Satellite Sees Increase of India's Sulfur Dioxide Emissions
The analysis of data captured by the Ozone Monitoring Instrument (OMI) found that emissions of sulfur dioxide from Indian power plants have increased by more than 60 percent between 2005 and 2012
Ozone featureHomogenizing Global Sulfur Dioxide Measurements from Multiple Satellite Sensors
Satellite mapping of sulfur dioxide (SO2) is useful to track volcanic and anthropogenic emissions in places where detailed SO2 emission information is not available.
OMI featureEnhancements in NO2 and SO2 over the Canadian oil sands
Data from the Ozone Monitoring Instrument (OMI) show distinct enhancements in nitrogen dioxide (NO2) and sulfur dioxide (SO2 ) over a region of surface mining in the Canadian oil sands.
OMI featureOMI sees BrO enhancements over the North Pole
OMI, with its wide swath, is the only instrument that can detect Bromine Monoxide (BrO) at the pole on every orbit. Here, stratospheric BrO has been carefully separated from the total column to produce estimates of the tropospheric BrO column.
 Direct observations of megacity emissions and lifetimes of nitrogen oxides using OMI
Emission inventories in megacities are uncertain, particularly in developing countries. Can we use OMI to better quantify these emissions without a model?
 Decrease in SO2 over the Eastern US
OMI data confirm a substantial reduction in sulfur dioxide (SO2 ) values around the largest US coal power plants as a result of the implementation of pollution control measures.
Global satellite analysis of the relation between aerosols and short-lived trace gasesGlobal satellite analysis of the relation between aerosols and short-lived trace gases
Information on the global composition of aerosol particles, their emission sources and relative regional pollution controls of combustion processes.
A-Train data for Merapi volcanic cloudA-Train data for Merapi volcanic cloud
Indonesia's Mount Merapi turned destructive, unleashing a series of eruptions.
Pollution episode over ChinaPollution episode over China
Aura observes a high-pressure weather system settled in over eastern China, in which air pollution began to accumulate locally for nearly a week.
OMI IcelandEyjafjallajskull volcano
Near-real-time OMI images of ash and sulfur dioxide from Icelandic eruption
reduction of Sulfur dioxide pollutionAura OMI observes reduction of Sulfur dioxide pollution over China
Chinese sulfur dioxide (SO2) emission controls were given a major strengthening in the 11th Five-Year-Plan.
Air Pollution ControlsAir Pollution Controls
Air Pollution Controls for Summer Surface Ozone as Deduced by OMI
OMI Fires Air Quality Changes Resulting from Emission Regulations
Regulations have resulted in reduced NOx emissions from major point sources over much of the Eastern US as shown by OMI's Continuous Emission Monitoring System data.
Aura and CALIPSOAura and CALIPSO
Combined use of A-train data for improved aerosol characterization
Aura and CloudSatAura and CloudSat
Combined use of A-train data for improved cloud study
South American biomass burningSouth American biomass burning
OMI observes large decrease of South American biomass burning in 2008
Nitrogen dioxide trendsNitrogen dioxide trends
OMI NO2 trends: 2007 - 2005 annual means
OMI Observes Impact from the Gulf HurricanesOMI Observes Impact from the Gulf Hurricanes
Hurricanes Katrina and Rita caused a significant reduction in nitrogen dioxide emissions.
Nitrogen dioxide in CaliforniaNitrogen Dioxide Observations in California
Aggressive air quality regulations of emission reductions show results in Aura's OMI imagery.
Sarychev Peak eruptionSarychev Peak Eruption
The eruption of Sarychev Peak (Kurile Islands) in mid-June 2009 produced a large stratospheric sulfur dioxide cloud that spread rapidly eastward in strong jet stream winds.
OMI FiresSmoke transported from the California station fire
Aerosol measurements from Aura's OMI instrument
OMI NO2NO2 in the Troposphere
View collection of movies created from Aura's OMI instrument of NO2 in the troposphere.
Aura Science Result ImageFires In Southern California
NASA satellites continue to capture remarkable new images of the wildfires raging in Southern California. Aura's OMI images show the smoke aerosol layer generated by the fires in Southern California as it drifts over the Pacific Ocean.
MODIS/OMI Fires in CaliforniaCalifornia fires as seen from MODIS and OMI
Smoke from the recent outbreak of fires in Southern California can clearly be seen via NASA satellites.
Aleutians EruptionAleutians Eruption
OMI captured the SO2 cloud in 2 consecutive orbits of the eruption in the Aleutians.
NO2 in mid Aug

Air Quality during the Olympics
Restrictions were put on traffic and power plants to improve air quality in Beijing during the Olympics. OMI makes daily measurements of the total column of SO2 and NO2.

Okmok eruptionOkmok eruption
Sulfur dioxide measurements from the Ozone Monitoring Instrument (OMI) on Aura permitted tracking of the eruption cloud in near real-time.
Springtime OMI measurements of BrOSpringtime OMI Measurements of BrO
Despite its low atmospheric abundance, bromine monoxide (BrO) plays an important role in the chemistry of the atmosphere because it is a catalyst of the ozone destruction.
Chaiten volcano Eruption
The Chaiten volcano eruption in southern Chile caught local authorities by surprise as experts say it has been dormant for at least 450 years.
+ More
Aura science result image Sulfur Dioxide and Vog from Kilauea
In late April 2008, Kilauea Volcano Volcano on Hawaii's big island continued its pattern of increased activity, including elevated seismic tremors and emissions.
+ More
Aura science result image Sulfur Dioxide over Hawaii
Aura's OMI instrument provided the imagery used in the animation of the Sulfur dioxide (SO2) emissions over Hawaii. The volcano, which has been erupting since 1983, began venting elevated levels of sulfur dioxide from Halemaumau Crater, located atop the volcano, in mid-March.
+ More
Aura Science Result ImageLlaima Volcano Eruption
The Llaima Volcano is one of Chile's most active volcanoes and has frequent but moderate eruptions. An eruption on January 1, 2008 forced the evacuation of hundreds of people from nearby villages.
+ More
Aura Science Result ImageFires In Southern California
NASA satellites continue to capture remarkable new images of the wildfires raging in Southern California. Aura's OMI images show the smoke aerosol layer generated by the fires in Southern California as it drifts over the Pacific Ocean.
+ More
Aura Science Result ImageOMI Measures Volcanic Gas Cloud (movie)
On May 20, 2006 a major lava dome collapse at the Soufriere Hills volcano triggered an explosive emission of volcanic gases. Sulfur dioxide in the resulting gas cloud was tracked by OMI for 3 weeks as it moved westwards across the Pacific.
+ More
OMI Smelter MeasurementsSO2 Emissions from Smelters
The Peruvian copper smelters are among the world's largest industrial point sources of sulfur dioxide (SO2), and are among the most polluting in the world. OMI is sensitive enough to identify copper being emitted from the La Oroya and Ilo smelters even though these produce less SO2 than the volcanoes.
+ More
OMI & MLS Tropospheric Ozone maps First global tropospheric maps show streams of tropospheric ozone crossing the oceans
OMI & MLS can estimate the tropospheric ozone residual by subtracting the MLS stratospheric ozone from OMI column ozone. These maps show pollution streaming from the U.S., Europe and China to the west in summer and pollution from biomass burning in the equatorial zone.
+ More
 Asian Dust Storms (movie)
Asia is suffering through the worst dust storm season in at least five years. The eighth major storm this year clogged the air over China, Korea, and Japan with sand from the Taklamkan and Gobi deserts. The sand picks up a toxic mix of heavy metals and carcinogens as the clouds pass over China's industrial areas, exacerbating health problems due to these storms.
+ More
Aura Science Result Image South Korea gets rare yellow snowfall
South Koreans were treated to a rare weather phenomenon on Monday when yellow snow fell in the capital and elsewhere across the country.
+ More
Aura Science Result Image NASA Satellite Eyes Atmosphere to Improve Pollution and Climate Forecasting
Thanks to the latest sophisticated, satellite-based instruments, local and regional air pollution and their sources can now be observed closely from space.
+ More
Aura Science Result Image Eruption of Anatahan
This image of the volcanic eruptions from Anatahan (Mariana Islands) shows sulfur dioxide concentrations in the atmosphere on April 7, 2005, over 30 hours after the eruption.
+ More
Aura Science Result Image OMI Measurement of Nitrogen Dioxide
This image from Aura's OMI instrument shows the total column amount of nitrogen dioxide, a precursor to the formation of tropospheric ozone.
+ More
Aura Science Result Image Sulfur Dioxide Plume From Manam Volcano
When the Manam volcano erupted explosively in the middle of the night on January 27, 2005, it sent a cloud of ash and sulfur dioxide over New Guinea.
+ More
Aura Science Result Image Tropospause Fold
View this OMI vs TOMS data imagery of the United States
+ More

TES

OMI

MLS

HIRDLS

NASA logo
Goddard Space Flight Center
privacy