N: 90 S: -90 E: 180 W: -180
Description
The OMI science team produces this Level-3 Aura/OMI Global OMDOAO3e Data Products (0.25deg Lat/Lon grids). This Level-3 global total column ozone product is derived from OMDOAO3 which is based on the Differential Absorption Spectroscopy (DOAS) fitting technique that essentially uses the OMI visible radiance values between 331.1 and 336.1 nm. In addition to the total ozone column (best quality data, satisfying the shortest path length) and its precision this product also contains some ancillary parameters such as cloud fraction, cloud height, etc. The short name for this Level-3 OMI ozone product is OMDOAO3e and the lead Algorithm scientist for this product and for OMDOAO3 (the data source of OMDOAO3e) is Dr. Pepijn Veefkind from KNMI.
The OMDOAO3e product files are stored in the version 5 Hierarchical Data Format (HDF-EOS5). Each daily file contains data from the day lit portion of the orbits (approximately 14 orbits) and is roughly 8 MB in size.
Product Summary
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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 |
|---|---|---|---|---|---|---|
| HDFEOS/GRIDS/ColumnAmountO3/Data Fields/CloudFraction | Effective cloud fraction | NoUnits | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/GRIDS/ColumnAmountO3/Data Fields/CloudFractionPrecision | Effective cloud fraction precision | NoUnits | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/GRIDS/ColumnAmountO3/Data Fields/CloudPressure | Effective cloud pressure | hPa | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/GRIDS/ColumnAmountO3/Data Fields/CloudPressurePrecision | Effective cloud pressure precision | hPa | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/GRIDS/ColumnAmountO3/Data Fields/ColumnAmountO3 | Ozone vertical column density | DU | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/GRIDS/ColumnAmountO3/Data Fields/ColumnAmountO3Precision | Precision of the ozone vertical column density | DU | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/GRIDS/ColumnAmountO3/Data Fields/EffectiveTemperature | Fitted Effective temperature of the ozone | degree Celsius | int8 | 0 | N/A | N/A |
| HDFEOS/GRIDS/ColumnAmountO3/Data Fields/EffectiveTemperaturePrecision | Precision of the Fitted Effective temperature of the ozone | degree Celsius | int8 | 0 | N/A | N/A |
| HDFEOS/GRIDS/ColumnAmountO3/Data Fields/GhostColumnAmountO3 | Ozone ghost column density | DU | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/GRIDS/ColumnAmountO3/Data Fields/SolarZenithAngle | Solar zenith angle at WGS84 ellipsoid for center co-ordinate of the ground pixel | deg | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/GRIDS/ColumnAmountO3/Data Fields/TerrainHeight | Terrain height for center co-ordinate of the ground pixel | m | int16 | -32767 | N/A | N/A |
| HDFEOS/GRIDS/ColumnAmountO3/Data Fields/TerrainReflectivity | Reflectivity of the ground pixel | NoUnits | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS/GRIDS/ColumnAmountO3/Data Fields/ViewingZenithAngle | Viewing zenith angle at WGS84 ellipsoid for center co-ordinate of the ground pixel | deg | float32 | -1.2676506002282E+30 | N/A | N/A |
| HDFEOS INFORMATION/StructMetadata.0 | HDFEOS INFORMATION/StructMetadata.0 | N/A | OTHER | N/A | N/A | N/A |