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This document describes the OBPG_MODISA data files. This document is sub-divided into three sections: OBPG_MODISA level 1, OBPG_MODISA level 2 and OBPG_MODISA level 3 respectively. All the files are pure HDF4 files.
The following table summarizes the information collected for all the files:
| File type | File size(avg.) | Datafield Dim. Range | CF-compliant information | Other special issues |
|---|---|---|---|---|
| HDF4 | 200MB | 2D, 3D | All the data fields do not have 'units' and 'long_name' attribute. | Latitude and longitude need to be calculated based on some attributes; |
The following table summarizes the information collected for all the files:
| File type | File size(avg.) | Datafield Dim. Range | CF-compliant information | Other special issues |
|---|---|---|---|---|
| HDF4 | 12MB | 2D | 1. All the data fields or geo fields have ‘units’ and ‘long_name’ attribute. Data fields also have ‘slope’ and ‘intercept’ attribute; 2. 'units' attribute for latitude and longitude does not follow CF conventions; 3. Name for fillvalue attribute does not follow CF conventions; 4. There are fill values inside the data but there is neither a 'Fill_Value' attribute nor a 'missing value' attribute | Interpolation is needed to calculate latitude or longitude |
The following table summarizes the information collected for all the files:
| File type | File size(avg.) | Datafield Dim. Range | CF-compliant information |
|---|---|---|---|
| HDF4 | 105MB | 2D | 1. Data fields have ‘units’, ‘slope’ and ‘intercept’ attributes; 2. There are fill values inside the data but there is neither a 'Fill_Value' attribute nor a 'missing value' attribute |
To retrieve sample MODISA files and read the detailed description of these files, please click here.