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Description

As part of the NASA's Making Earth System Data Records for Use in Research Environments (MEaSUREs) program, this project entitled “Multi-Decadal Nitrogen Dioxide and Derived Products from Satellites (MINDS)” will develop consistent long-term global trend-quality data records spanning the last two decades, over which remarkable changes in nitrogen oxides (NOx) emissions have occurred. The objective of the project Is to adapt Ozone Monitoring Instrument (OMI) operational algorithms to other satellite instruments and create consistent multi-satellite L2 and L3 nitrogen dioxide (NO2) columns and value-added L4 surface NO2 concentrations and NOx emissions data products, systematically accounting for instrumental differences. The instruments include Global Ozone Monitoring Experiment (GOME, 1996-2011), SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY, 2002-2012), OMI (2004-present), GOME-2 (2007-present), and TROPOspheric Monitoring Instrument (TROPOMI, 2018-present). The quality assured L2-L4 products will be made available to the scientific community via the NASA GES DISC website in Climate and Forecast (CF)-compliant Hierarchical Data Format (HDF5) and netCDF formats.

Version Description

Product version: 1 PGEVersion: 0.0.4

Product Summary

Platforms
Aura
Instruments
OMI
Spatial Extent

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

Geographic Region
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2004-10-01 to Present
Data Partner
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/TISL/GESDI
Concept ID
C2212151771-GES_DISC
Data State
ACTIVE
Number of Files/Granules
104088
Processing Level
2
Published
Updated
Science Keywords
Atmospheric Nitric Acid ,
Nitric Oxide ,
Nitrogen Dioxide ,
Nitrogen Oxides ,
Nitrous Oxide

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Lamsal, L., & Krotkov, N. (2022). OMI/Aura NO2 Tropospheric, Stratospheric and Total Columns MINDS L2 Swath 1-Orbit 13 km x 24 km V1.1 [Data set]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/MEASURES/MINDS/DATA204 Date Accessed: 2025-12-13

Documents

READ-ME

Variables

Variables are a set of physical properties whose values determine the characteristics or behavior of something. For example, temperature and pressure are variables of the atmosphere. Parameters and variables can be used interchangeably. Variable level attributes provide individual information for each variable.

The Name in this table is the variable name. Fill value indicates missing or undefined data points in a variable. Valid range is the range of values the variable can store. Scale factor is used to increase or decrease the size of an object and can be used to correct for distortion. For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor
ANCILLARY_DATA/CloudFraction The effective cloud fraction associated with the ground pixel (from OMCDO2N). 1 int32 -2147483648 0 to 1000 0.001
ANCILLARY_DATA/CloudFractionStd The estimated precision of the effective cloud fraction associated with the ground pixel (from OMCDO2N). 1 int32 -2147483648 0 to 1000 0.001
ANCILLARY_DATA/CloudPressure The cloud optical centroid pressure (in hPa) retrieved using the O2-O2 method associated with the ground pixel (from OMCDO2N). hPa int32 -2147483648 100 to 1200 N/A
ANCILLARY_DATA/CloudPressureStd The estimated precision of the cloud optical centroid pressure (in hPa) retrieved using the O2-O2 method associated with the ground pixel (from OMCDO2N). hPa int32 -2147483648 N/A N/A
ANCILLARY_DATA/CloudRadianceFraction The cloud radiance fraction at 440 nm associated with the ground pixel (from OMCDO2N). 1 int32 -2147483648 0 to 1000 0.001
ANCILLARY_DATA/SceneLER The scene Lambertian Equivalent Reflectivity (at 440 nm) associated with the ground pixel (from OMCDO2N). 1 float32 -1.2676506002282E+30 0 to 1 N/A
ANCILLARY_DATA/ScenePressure The retrieved scene pressure (in hPa) associated with the ground pixel (from OMCDO2N). hPa float32 -1.2676506002282E+30 0 to 1200 N/A
ANCILLARY_DATA/TerrainHeight The pixel-averaged terrain height (in m) for the ground pixel (from OMGLER). m int32 -2147483648 -500 to 9000 N/A
ANCILLARY_DATA/TerrainPressure The pixel-averaged terrain pressure (in hPa) for the ground pixel (from OMGLER). hPa int32 -2147483648 300 to 1200 N/A
ANCILLARY_DATA/TerrainReflectivity The pixel-averaged terrain reflectivity at 440 nm for the ground pixel (from OMGLER). 1 int32 -2147483648 0 to 1000 0.001
ANCILLARY_DATA/TropopausePressure The GMI tropopause pressure (in hPa) associated with the ground pixel (from MERRA-2). hPa float32 -1.2676506002282E+30 50 to 500 N/A
ANCILLARY_DATA/XTrackQualityFlags The cross-track quality flags indicate the possible or probable effect of the OMI row anomaly on the measured radiances. The first three bits (bits 0 to 2) combined can have the following values: 0 - not affected by the row anomaly (pixel can be used), 1 - affected by the row anomaly (do not use pixel), 2 - somewhat affected by the row anomaly and uncorrected (use pixel with caution), 3 - affected by the row anomaly, but not optimally corrected (use pixel with caution), 4 - affected by the row anomaly and optimally corrected (pixel can be used, but is less accurate than unaffected pixel), 7 - affected by the row anomaly, but an error occurred during the attempted correction (do not use pixel). 1 int32 -2147483648 0 to 254 N/A
GEOLOCATION_DATA/FoV75Area The mean area (in square km) of the 75% Field of View (i.e., overlapping) ground pixels (from OMPIXCOR). km2 float32 -1.2676506002282E+30 0 to 5000 N/A
GEOLOCATION_DATA/FoV75CornerLatitude The geodetic latitudes (in degrees) of the corner coordinates of the 75% Field of View (i.e., overlapping) ground pixels (from OMPIXCOR). degrees_north float32 -1.2676506002282E+30 -90 to 90 N/A
GEOLOCATION_DATA/FoV75CornerLongitude The geodetic longitudes (in degrees) of the corner coordinates of the 75% Field of View (i.e., overlapping) ground pixels (from OMPIXCOR). degrees_east float32 -1.2676506002282E+30 -180 to 180 N/A
GEOLOCATION_DATA/GroundPixelQualityFlags The ground pixel quality flags (for the ground pixel): Bits 0 to 3 together contain the land/water flags: 0 - shallow ocean, 1 - land, 2 - shallow inland water, 3 - ocean coastline/lake shoreline, 4 - ephemeral (intermittent) water, 5 - deep inland water, 6 - continental shelf ocean, 7 - deep ocean, 8 to 14 - not used, 15 - error flag for land/water, Bits 4 to 7 are flags that are set to 0 for FALSE or 1 for TRUE: Bit 4 - sun glint possibility flag, Bit 5 - solar eclipse possibility flag, Bit 6 - geolocation error flag, Bit 7 - geolocation warning flag, Bits 8 to 14 together contain the snow/ice flags (based on NISE): 0 - snow-free land, 1 to 100 - sea ice concentration (percent), 101 - permanent ice (Greenland, Antarctica), 102 - not used, 103 - dry snow, 104 - ocean (NISE-255), 105 to 123 - reserved for future use, 124 - mixed pixels at coastline (NISE-252), 125 - suspect ice value (NISE-253), 126 - corners undefined (NISE-254), 127 - error, Bit 15 - NISE nearest neighbor filling flag. 1 int32 -2147483648 0 to 65534 N/A
GEOLOCATION_DATA/Latitude The terrestrial latitude (in degrees) at the center of the ground pixel. degrees_north float32 -1.2676506002282E+30 -90 to 90 N/A
GEOLOCATION_DATA/Longitude The terrestrial longitude (in degrees) at the center of the ground pixel. degrees_east float32 -1.2676506002282E+30 -180 to 180 N/A
GEOLOCATION_DATA/RelativeAzimuthAngle The relative (solar + 180 - viewing) azimuth angle (in degrees) at the center of the ground pixel. degrees float32 -1.2676506002282E+30 -180 to 180 N/A
GEOLOCATION_DATA/ScatteringWeightPressure The pressure levels for the scattering weight profile. hPa float32 -1.2676506002282E+30 0.80000001192093 to 1020 N/A
GEOLOCATION_DATA/SecondsInDay The time (in s) after UTC midnight of the observation. s float32 -1.2676506002282E+30 0 to 92500 N/A
GEOLOCATION_DATA/SolarAzimuthAngle The solar azimuth angle (in degrees) at the center of the ground pixel. degrees float32 -1.2676506002282E+30 -180 to 180 N/A
GEOLOCATION_DATA/SolarZenithAngle The solar zenith angle (in degrees) at the center of the ground pixel. degrees float32 -1.2676506002282E+30 0 to 90 N/A
GEOLOCATION_DATA/SpacecraftAltitude The altitude of the spacecraft (in m). m float32 -1.2676506002282E+30 700000 to 750000 N/A
GEOLOCATION_DATA/SpacecraftLatitude The latitude of the spacecraft (in degrees). degrees_north float32 -1.2676506002282E+30 -90 to 90 N/A
GEOLOCATION_DATA/SpacecraftLongitude The longitude of the spacecraft (in degrees). degrees_east float32 -1.2676506002282E+30 -180 to 180 N/A
GEOLOCATION_DATA/Time TAI93 (time in continuous seconds since 12 a.m. UTC on January 1, 1993) of the observation. seconds since 1993-01-01 00:00:00 float64 -1.2676506002282E+30 350000000 to 1000000000 N/A
GEOLOCATION_DATA/UTC UTC of the observation. N/A OTHER N/A N/A N/A
GEOLOCATION_DATA/ViewingAzimuthAngle The viewing azimuth angle (in degrees) at the center of the ground pixel. degrees float32 -1.2676506002282E+30 -180 to 180 N/A
GEOLOCATION_DATA/ViewingZenithAngle The viewing zenith angle (in degrees) at the center of the ground pixel. degrees float32 -1.2676506002282E+30 0 to 71 N/A
nCorners The dimension representing the ground-pixel-corner number. There are four corners per ground pixel. 1 int32 N/A N/A N/A
nLevels The dimension representing the pressure-level number. There are 35 pressure levels. 1 int32 N/A N/A N/A
nTimes The dimension representing the along-track scan-line number. 1 int32 N/A N/A N/A
nXtrack The dimension representing the cross-track ground-pixel number of the observation in a line. There are 60 cross-track positions. 1 int32 N/A N/A N/A
SCIENCE_DATA/AmfStrat The calculated stratospheric Air Mass Factor associated with the ground pixel. 1 float32 -1.2676506002282E+30 0.10000000149012 to 100 N/A
SCIENCE_DATA/AmfStratStd The estimated precision of the calculated stratospheric Air Mass Factor associated with the ground pixel. 1 float32 -1.2676506002282E+30 N/A N/A
SCIENCE_DATA/AmfTrop The calculated tropospheric Air Mass Factor associated with the ground pixel. 1 float32 -1.2676506002282E+30 0.0099999997764826 to 100 N/A
SCIENCE_DATA/AmfTropStd The estimated precision of the calculated tropospheric Air Mass Factor associated with the ground pixel. 1 float32 -1.2676506002282E+30 N/A N/A
SCIENCE_DATA/ColumnAmountNO2 The estimated NO2 vertical column density (in molec/cm2) associated with the ground pixel. molec/cm2 float32 -1.2676506002282E+30 -10000000272564224 to 999999984306749400 N/A
SCIENCE_DATA/ColumnAmountNO2Std The estimated precision of the NO2 vertical column density (in molec/cm2) associated with the ground pixel. molec/cm2 float32 -1.2676506002282E+30 N/A N/A
SCIENCE_DATA/ColumnAmountNO2Strat The estimated NO2 stratospheric column density (in molec/cm2) associated with the ground pixel. molec/cm2 float32 -1.2676506002282E+30 -10000000272564224 to 999999984306749400 N/A
SCIENCE_DATA/ColumnAmountNO2StratStd The estimated precision of the NO2 stratospheric column density (in molec/cm2) associated with the ground pixel. molec/cm2 float32 -1.2676506002282E+30 N/A N/A
SCIENCE_DATA/ColumnAmountNO2Trop The estimated NO2 tropospheric column density (in molec/cm2) associated with the ground pixel. molec/cm2 float32 -1.2676506002282E+30 -10000000272564224 to 999999984306749400 N/A
SCIENCE_DATA/ColumnAmountNO2TropStd The estimated precision of the NO2 tropospheric column density (in molec/cm2) associated with the ground pixel. molec/cm2 float32 -1.2676506002282E+30 N/A N/A
SCIENCE_DATA/ScatteringWeight The calculated scattering weight profile associated with the ground pixel. 1 float32 -1.2676506002282E+30 0 to 100 N/A
SCIENCE_DATA/SlantColumnAmountNO2 The estimated NO2 slant column density (de-striped, in molec/cm2) associated with the ground pixel. molec/cm2 float32 -1.2676506002282E+30 -10000000272564224 to 999999984306749400 N/A
SCIENCE_DATA/SlantColumnAmountNO2Std The estimated precision of the NO2 slant column density (in molec/cm2) associated with the ground pixel. molec/cm2 float32 -1.2676506002282E+30 N/A N/A
SCIENCE_DATA/VcdQualityFlags The vertical column density quality flags for the retrieval. Each bit is set as follows: Bit 0 - primary summary quality flag (0 for good data, 1 for a problem), Bit 1 - secondary summary quality flag (0 for no significant warnings, 1 for significant warnings), Bit 2 - reserved as possible additional summary quality flag, Bit 3 - algorithm detected pollution in field of view (0 for no significant pollution detected, 1 for significant pollution detected), Bit 4 - descending data flag (0 for ascending data, 1 for descending data). 1 int32 -2147483648 0 to 31 N/A
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