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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, 1996-2003), 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.

Product Summary

Platforms
ERS-2
Instruments
GOME
Spatial Extent

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

Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
1995-06-30 to 2003-06-22
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
C2539362687-GES_DISC
Data State
ACTIVE
Number of Files/Granules
33274
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). GOME/ERS-2 NO2 Tropospheric, Stratospheric and Total Columns MINDS 1-Orbit L2 Swath 40 km x 320 km V1.1 [Data set]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/MEASURES/MINDS/DATA202 Date Accessed: 2026-04-11

Documents

READ-ME

Variables

The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.

For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor Offset
ANCILLARY_DATA/CloudFraction The effective cloud fraction associated with the ground pixel (from NO2CLD). 1 int32 -2147483648 0 to 1000 0.001 0
ANCILLARY_DATA/CloudFractionStd The estimated precision of the effective cloud fraction associated with the ground pixel (from NO2CLD). 1 int32 -2147483648 0 to 1000 0.001 0
ANCILLARY_DATA/CloudPressure The cloud optical centroid pressure (in hPa) associated with the ground pixel (from NO2CLD). hPa int32 -2147483648 100 to 1200 N/A N/A
ANCILLARY_DATA/CloudPressureStd The estimated precision of the cloud optical centroid pressure (in hPa) associated with the ground pixel (from NO2CLD). hPa int32 -2147483648 N/A N/A N/A
ANCILLARY_DATA/CloudRadianceFraction The cloud radiance fraction at 440 nm associated with the ground pixel (from NO2CLD). 1 int32 -2147483648 0 to 1000 0.001 0
ANCILLARY_DATA/SnowIceFlags The snow-ice flags associated with the ground pixel (from GOMGLER): 0 = land, 1-100 = sea ice (percent), 101 = permanent ice, 103 = snow, 104 = water, 201-300 land snow (percent plus 200). 1 int32 -2147483648 0 to 300 N/A N/A
ANCILLARY_DATA/TerrainHeight The pixel-averaged terrain height (in m) for the ground pixel (from GOMGLER). m int32 -2147483648 -500 to 9000 N/A N/A
ANCILLARY_DATA/TerrainPressure The pixel-averaged terrain pressure (in hPa) for the ground pixel (from GOMGLER). hPa int32 -2147483648 300 to 1200 N/A N/A
ANCILLARY_DATA/TerrainReflectivity The pixel-averaged terrain reflectivity at 440 nm for the ground pixel (from GOMGLER). 1 int32 -2147483648 0 to 1000 0.001 0
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 N/A
GEOLOCATION_DATA/CornerLatitude The geodetic latitudes (in degrees) of the corner coordinates of the ground pixels. degrees_north float32 -1.2676506002282E+30 -90 to 90 N/A N/A
GEOLOCATION_DATA/CornerLongitude The geodetic longitudes (in degrees) of the corner coordinates of the ground pixels. degrees_east float32 -1.2676506002282E+30 -180 to 180 N/A N/A
GEOLOCATION_DATA/GroundPixelArea The area (in square km) of the ground pixel. km2 float32 -1.2676506002282E+30 0 to 70000 N/A 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 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 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 N/A
GEOLOCATION_DATA/ScatteringWeightPressure The pressure levels for the scattering weight profile. hPa float32 -1.2676506002282E+30 0.80000001192093 to 1020 N/A 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 N/A
GEOLOCATION_DATA/SolarAzimuthAngle The solar azimuth angle (in degrees) at the center of the ground pixel. degrees float32 -1.2676506002282E+30 0 to 360 N/A 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 N/A
GEOLOCATION_DATA/SpacecraftAltitude The altitude of the spacecraft (in m). m float32 -1.2676506002282E+30 750000 to 850000 N/A N/A
GEOLOCATION_DATA/SpacecraftLatitude The latitude of the spacecraft (in degrees). degrees_north float32 -1.2676506002282E+30 -90 to 90 N/A N/A
GEOLOCATION_DATA/SpacecraftLongitude The longitude of the spacecraft (in degrees). degrees_east float32 -1.2676506002282E+30 -180 to 180 N/A 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 70000000 to 600000000 N/A N/A
GEOLOCATION_DATA/UTC UTC of the observation. N/A OTHER N/A 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 0 to 360 N/A 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 35 N/A 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 N/A
nLevels The dimension representing the pressure-level number. There are 35 pressure levels. 1 int32 N/A N/A N/A N/A
nTimes The dimension representing the along-track line number. 1 int32 N/A N/A N/A N/A
nXtrack The dimension representing the cross-track position number of the observation in a line. There are 3 cross-track positions. 1 int32 N/A 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 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 N/A
SCIENCE_DATA/AmfTrop The calculated tropospheric Air Mass Factor associated with the ground pixel. 1 float32 -1.2676506002282E+30 0.0049999998882413 to 100 N/A 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 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 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 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 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 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 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 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 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 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 N/A
SCIENCE_DATA/VcdQualityFlags The vertical column density quality flags for the retrieval. Each bit is set as follows: Bits 0 to 3 - currently unused, Bit 4 - ascending data flag (0 for descending data, 1 for ascending data), Bits 5 to 11 - currently unused, Bit 12 - AMF/SCD flag (0 for good AMF/SCD data, 1 for bad AMF/SCD data). 1 int32 -2147483648 0 to 4112 N/A N/A
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