N: 90 S: -90 E: 180 W: -180
Description
The OMI science team produces this Level-3 Aura/OMI Global OMSO2e Data Products (0.25 degree Latitude/Longitude grids). In this Level-3 daily global SO2 data product, each grid contains only one observation of Total Column Density of SO2 in the Planetary Boundary Layer (PBL), based on an improved Principal Component Analysis (PCA) Algorithm. This single observation is the "best pixel", selected from all "good" L2 pixels of OMSO2 that overlap this grid and have UTC time between UTC times of 00:00:00 and 23:59:59.999. In addition to the SO2 Vertical column value some ancillary parameters, e.g., cloud fraction, terrain height, scene number, solar and satellite viewing angles, row anomaly flags, and quality flags have been also made available corresponding to the best selected SO2 data pixel in each grid.
The OMSO2e files are stored in the version 5 EOS Hierarchical Data Format (HDF-EOS5) using the grid model.
Product Summary
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
Documents
READ-ME
PI DOCUMENTATION
PUBLICATIONS
Get Help
QUESTIONS & SUPPORT
Get help with NASA Earth science data, datasets, tools, services, and metadata on the Earthdata Forum. Experienced staff in the data user community review and answer questions.
Get help on Earthdata ForumForum
Publications Citing This Dataset
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 Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor | Offset |
|---|---|---|---|---|---|---|---|
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/Data_Fields/CloudRadianceFraction | Cloud Radiance Fraction at 313 nm | NoUnits | float32 | -1.2676506002282E+30 | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/Data_Fields/ColumnAmountO3 | Best Total Ozone Solution (from OMTO3) | DU | float32 | -1.2676506002282E+30 | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/Data_Fields/ColumnAmountSO2 | Vertical Column Amount SO2 (GEOS-5 Profile) | DU | float32 | -1.2676506002282E+30 | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/Data_Fields/Latitude | Geodetic Latitude | degrees_north | float32 | -1.2676506002282E+30 | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/Data_Fields/LineNumber | Line Number of Candidate Scene | NoUnits | int32 | -2147483648 | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/Data_Fields/Longitude | Geodetic Longitude | degrees_east | float32 | -1.2676506002282E+30 | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/Data_Fields/OrbitNumber | Orbit Number of Candidate Scene | NoUnits | int32 | -2147483648 | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/Data_Fields/QualityFlags_SO2 | Quality Flags for SO2 Column Amounts | NoUnits | int32 | -2147483648 | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/Data_Fields/RelativeAzimuthAngle | Relative Azimuth Angle (sun + 180 - view) | deg(EastofNorth) | float32 | -1.2676506002282E+30 | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/Data_Fields/SceneNumber | Scene Number of Candidate Scene | NoUnits | int32 | -2147483648 | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/Data_Fields/SolarZenithAngle | Solar Zenith Angle | deg | float32 | -1.2676506002282E+30 | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/Data_Fields/TerrainHeight | Terrain Height | m | int16 | -32767 | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/Data_Fields/Time | Time at Start of Scan (TAI93) | seconds since 1993-01-01 | float64 | -1.2676506002282E+30 | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/Data_Fields/ViewingZenithAngle | Viewing Zenith Angle | deg | float32 | -1.2676506002282E+30 | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/XDim | HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/XDim | degrees_east | float32 | N/A | N/A | N/A | N/A |
| HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/YDim | HDFEOS/GRIDS/OMI_Total_Column_Amount_SO2/YDim | degrees_north | float32 | N/A | N/A | N/A | N/A |
| HDFEOS_INFORMATION/StructMetadata_0 | HDFEOS_INFORMATION/StructMetadata_0 | N/A | string | N/A | N/A | N/A | N/A |