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Sulfur Dioxide Data Access and Tools

Commonly Used Sulfur Dioxide Data at a Glance

The following sections will help guide you to topic-specific data and resources for accessing, visualizing, preparing/manipulating (e.g. subsetting), and analyzing data. Each observation, model, and reanalysis data has unique characteristics that should be considered when evaluating its use.

An asterisk (*) next to an entry indicates that near real-time (NRT) data products are available through NASA's Land, Atmosphere Near real-time Capability for EOS (LANCE). While not intended for scientific research, NRT data are good resources for monitoring ongoing or time-critical events. To learn more about the difference between NRT and Standard Science Products, see Near Real Time versus Standard Products.

Spatial ResolutionSpatial CoverageTemporal ResolutionTemporal CoverageSpectral ResolutionSatellite/ PlatformName (Sensor, Model, etc.)Observation, Model, or ReanalysisFile Format
50 km x 50 kmGlobal6 minutes2002-20232,378 infrared channels in the 3.74-15.4 micron spectral rangeAqua*AIRSObservationHDF-EOS
13 km x 24 km, 0.25°, 1°Global98 minutes, Daily2004-present1.0-0.45 nm Full Width and Half Maximum (FWHM)AuraOzone Monitoring Instrument (OMI)ObservationHDF-EOS5
7.5 km x 3 kmGlobal101 minutes, Daily2018250-420 nmNASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP)Ozone Mapping and Profiler Suite (OMPS)ObservationnetCDF-4
7 x 3.5 km for all spectral bands, with the exception of the UV1 band (7 x 28 km2) and SWIR bands (7 x 7 km2)GlobalDaily2017-present270 nm-2.3 µm, 0.55 nmESA Sentinel-5PTROPOspheric Monitoring Instrument (TROPOMI)ObservationnetCDF
165 km x 3 kmNear-global (-82º to +82º latitude)15 minutes,
Twice daily [day, night]		2021-present190 and 240 GHzAura*MLSObservationHDF-EOS5
0.5° x 0.625°GlobalHourly,
3 hourly,
Monthly		1980-presentN/AN/AMERRA-2ReanalysisnetCDF
0.25º x 0.25°Global15 min, HourlyDaily 5-day forecastN/AN/AGEOS-CFModelnetCDF
0.25º x 0.312°Global3-hourlyNear-real time assimilation (DAS), 10-day forecast at 00z, and 5-day forecast at 12zN/AN/AGEOS FPAnalysisnetCDF
Point measurementsGlobalPeriodic flights occurred during each deployment2016-2018variesAirborne Field CampaignAtmospheric Tomography Mission (ATom) campaign with varying instrumentsObservationnetCDF

Sulfur Dioxide Datasets

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Dataset Version Platform Instrument Temporal Extent Spatial Extent Spatial Resolution Data Format
NARSTO Pacific 2001 Air Quality Study (PAC2001) Slocan Park (SLPK) Slocan Park Site Gaseous, Partculate Matter (PM), and Meteorological Data 1 GROUND STATIONS, METEOROLOGICAL STATIONS AETHALOMETER, TEMPERATURE PROBES, UV OZONE DETECTORS, GC-MS, TEOM, CHEMILUMINESCENCE, FLUORESCENCE SPECTROSCOPY, ION CHROMATOGRAPHS, HUMIDITY SENSORS, IR CO2 ANALYZER, PRESSURE SENSORS 2001-08-11 to 2001-09-01 ASCII
NARSTO SOS99 Nashville Tennessee Valley Authority (TVA) Surface Meteorology and Chemistry Data 1 GROUND STATIONS, METEOROLOGICAL STATIONS NDIR GAS ANALYZER, UV OZONE DETECTORS, PYRANOMETERS, CHEMILUMINESCENCE, FLUORESCENCE SPECTROSCOPY, ANEMOMETERS, THERMISTORS 1999-06-15 to 1999-07-16 ASCII
NARSTO SOS99 Nashville WP-3D Orion Air Chemistry Data 1 GROUND STATIONS BAROMETERS, LOPC-PMS, HPLC, HYGROMETERS, CHEMILUMINESCENCE, GPS, SPECTRORADIOMETERS, THERMISTORS 1999-06-26 to 1999-07-19 ASCII
NARSTO SOS99NASH DOE G-1 Air Chemistry Data 1 G-1 AIRCRAFT BAROMETERS, AEROSOL COLLECTORS, HYGROMETERS, CHEMILUMINESCENCE, INFRARED THERMOMETERS, GUST PROBES, SPECTRORADIOMETERS 1999-06-26 to 1999-06-26 ASCII
OMI/Aura Level 2 Sulphur Dioxide (SO2) Trace Gas Column Data 1-Orbit Subset and Collocated Swath along CloudSat V003 (OMSO2_CPR) at GES DISC 003 Aura OMI 2006-06-01 to 2018-03-02

N: 90 S: -90 E: 180 W: -180

24 Kilometers x 13 Kilometers
OMI/Aura Sulfur Dioxide (SO2) Total Column Daily L3 1 day Best Pixel in 0.25 degree x 0.25 degree V3 (OMSO2e) at GES DISC 003 Aura OMI 2004-10-01 to Present

N: 90 S: -90 E: 180 W: -180

0.25 Decimal Degrees x 0.25 Decimal Degrees
OMI/Aura Sulfur Dioxide (SO2) Total Column Daily L3 1 day Best Pixel in 0.25 degree x 0.25 degree V4 (OMSO2e) at GES DISC 004 Aura OMI 2004-10-01 to Present

N: 90 S: -90 E: 180 W: -180

OMI/Aura Sulphur Dioxide (SO2) Total Column 1-orbit L2 Swath 13x24 km V003 NRT 003 Aura OMI 2004-07-15
OMI/Aura Sulphur Dioxide (SO2) Total Column 1-orbit L2 Swath 13x24 km V003 (OMSO2) at GES DISC 003 Aura OMI 2004-10-01 to Present

N: 90 S: -90 E: 180 W: -180

24 Kilometers x 13 Kilometers
OMI/Aura Sulphur Dioxide (SO2) Total Column 1-orbit L2 Swath 13x24 km V004 (OMSO2) at GES DISC 004 Aura OMI 2004-10-01 to Present

N: 90 S: -90 E: 180 W: -180

24 Kilometers x 13 Kilometers
OMI/Aura Sulphur Dioxide (SO2) Total Column Daily L2 Global Gridded 0.125 degree x 0.125 degree V004 (OMSO2G) at GES DISC 004 Aura OMI 2004-10-01 to Present

N: 90 S: -90 E: 180 W: -180

OMI/Aura Sulphur Dioxide (SO2) Total Column Daily L2 Global Gridded 0.125 degree x 0.125 degree V3 (OMSO2G) at GES DISC 003 Aura OMI 2004-10-01 to Present

N: 90 S: -90 E: 180 W: -180

24 Kilometers x 13 Kilometers
OMPS-N20 NM PCA SO2 Step 1 Total Column 1-Orbit L2 Swath 17x13km 1 NOAA-20 OMPS 2018-01-16 to Present

N: 90 S: -90 E: 180 W: -180

OMPS-N20 NM PCA SO2 Step 1 Total Column 1-Orbit L2 Swath 17x13km NRT 1 NOAA-20 OMPS 2018-01-16 to Present

N: 90 S: -90 E: 180 W: -180

netCDF
OMPS-NPP L2 NM Sulfur Dioxide (SO2) Total and Tropospheric Column swath orbital V2 (OMPS_NPP_NMSO2_L2) at GES DISC 2 Suomi-NPP OMPS 2012-01-26 to Present

N: 90 S: -90 E: 180 W: -180

OMPS/NPP L3 NM PCA Sulfur Dioxide (SO2) Total Column Daily Best Pixel Global Gridded 0.25 degree x 0.25 degree V1 (OMPS_NPP_NMSO2_PCA_L3_DAILY) at GES DISC 1 Suomi-NPP OMPS 2012-01-26 to Present

N: 90 S: -90 E: 180 W: -180

OMPS/NPP PCA SO2 Total Column 1-Orbit L2 Swath 50x50km NRT 2 Suomi-NPP OMPS 2011-10-28
OMPS/NPP PCA SO2 Total Column 1-Orbit L2 Swath 50x50km V2 (OMPS_NPP_NMSO2_PCA_L2) at GES DISC 2 Suomi-NPP OMPS 2012-01-26 to Present

N: 90 S: -90 E: 180 W: -180

OWLETS-2 Surface (Ground) Data 1 GROUND STATIONS, Vaisala HydroMet AWS GAS SENSORS, LGR CRDS, Picarro G2401, TEMPERATURE SENSORS, PRESSURE SENSORS, HUMIDITY SENSORS 2018-05-23 to 2018-08-02

N: 39.26 S: 39.24 E: -76.36 W: -76.72

ICARTT
OWLETS-2 University of Maryland Cessna Aircraft Data 1 UMD Cessna, HU-25A GPS, GAS SENSORS, TSI-3563 Neph, AETHALOMETER, PSAP, Picarro G2401, LGR CRDS, GeoTASO 2017-07-07 to 2018-07-20

N: 42.14 S: 37.23 E: -71.94 W: -77.48

ICARTT, HDF5
PEM Tropics A P-3B In-Situ Trace Gas Data 1 P-3B DACOM, GAS CHROMATOGRAPHS, GRAB SAMPLERS, CHEMILUMINESCENCE 1996-08-06 to 1996-09-27

N: 50 S: -79.03 E: 180 W: -180

GTE
PEM Tropics B DC-8 In-Situ Trace Gas Data 1 NASA DC-8 DACOM, GAS CHROMATOGRAPHS, GRAB SAMPLERS, LIQUID CHROMATOGRAPHS, ION CHROMATOGRAPHS, LIF-NO, CHEMILUMINESCENCE 1999-02-20 to 1999-04-19

N: 40 S: -36.35 E: 180 W: -180

GTE
PEM Tropics B P-3B In-Situ Trace Gas Data 1 P-3B CIMS, DACOM, GAS CHROMATOGRAPHS, CHEMILUMINESCENCE, ION CHROMATOGRAPHS, GRAB SAMPLERS 1999-03-05 to 1999-04-12

N: 40 S: -36.33 E: 180 W: -180

GTE
PEM West A DC-8 In-Situ Trace Gas Data 1 NASA DC-8 GRAB SAMPLERS, CHEMILUMINESCENCE, FLUORESCENCE SPECTROSCOPY, DACOM 1991-09-08 to 1991-10-23

N: 61.338 S: -0.058 E: 180 W: -180

GTE
PEM West A Ground Data 1 GROUND STATIONS NDIR GAS ANALYZER, CHEMILUMINESCENCE 1991-01-08 to 1991-12-31

N: 52.92 S: 21.33 E: 180 W: -180

GTE
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Featured Sulfur Dioxide Observation Method: OMPS

The Ozone Mapping and Profiler Suite (OMPS) aboard the joint NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) satellite tracks the health of Earth's ozone layer and measures the concentration of atmospheric ozone. The NOAA-20 and NOAA-21 satellites are also equipped with the instrument. Total column sulfur dioxide data from OMPS are available on a near real-time basis.

Learn More About OMPS
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OMPS Near Real-Time Data

Near real-time Ozone Mapping and Profiler Suite (OMPS) data products include total column ozone, total column sulfur dioxide (SO2), vertical ozone profile swath, and aerosol index.

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