MISR Level 3 File Format
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MISR Level 3 File Format |
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The MISR Level 3 products are in HDF-EOS format. Tools and other information about HDF-EOS are available from the HDF-EOS Tools and Information Center and HDF Info.
Detailed information about the format of the MISR Level 3 files can be found in the Data Products Specifications (PDF) document. However, if you are using a HDF-EOS aware tool (e.g., IDL, HDF-EOS library), you will need to know little more than the HDF-EOS grid and HDF-EOS field names.
Note that the MISR Level 3 data are map projected as described on the Overview page.
| Component Global Georectified
Radiance Product (CGGRP): MIL3DRD, MIL3MRD, MIL3QRD | |||
|---|---|---|---|
| Grid | Field | Data type | Description |
| GeorectifiedRadianceAverage | Average | FLOAT32 -9999 = fill |
This is the average radiance value, in W m-2 sr-1
µm-1. This is indexed by y, x, camera, band.
Camera has 0 = DF, 1 = CF, 2 = BF, 3 = AF, 4 = AN, 5 = AA, 6 = BA, 7 = CA, 8 = DA. Band is 0 = Blue (443 nm), 1 = Green (555 nm), 2 = Red (670 nm), 3 = Infrared (865 nm). |
| Average count | INT32 | This is the count of radiances used in the Average field. This has the same indices as Average. | |
| GeorectifiedRadianceCovariance | Covariance | FLOAT32 0 = fill |
This is the variance and covariance between the radiances, in the units
W2 m-4 sr-2 µm-2. This
contains only the lower triangular part of the symmetric covariance matrix.
This is indexed by x, y, and a covariance index.
For the covariance index, 0 = Variance of the DF Blue, 1 = Covariance of the DF Blue and DF Green, 2 = Variance of DF Green, and so on. |
| Covariance count | INT32 | This is the count of the radiance pairs that are used in the Covariance. This has the same indices as Covariance. | |
| Component Global Aerosol
Product (CGAS): MIL3DAE, MIL3MAE, MIL3QAE | |||
| Grid | Field | Data type | Description |
| AerosolParameterAverage | Optical depth average | FLOAT32 -9999 = fill |
Average of the aerosol optical depth. This is for the green (555 nm) band. This is indexed by y, x. |
| Optical depth average count | INT32 | Count of optical depths used in the Optical depth average. | |
| Component Global Land Surface
Product (CGLS): MIL3DLS, MIL3MLS, MIL3QLS | |||
| Grid | Field | Data type | Description |
| LandParameterAverage | DHR average | FLOAT32 -9999 = fill |
Average of DHR (Directional Hemispheric Reflectance). Defined as radiance
exitance divided by irradiance under illumination from a single direction.
Also known as the "black sky" albedo. This is indexed by y, x, and band.
Band is 0 = Blue (443 nm), 1 = Green (555 nm), 2 = Red (670 nm), 3 = Infrared (865 nm). |
| DHR average count | INT32 | Count of DHR values used in DHR average. Same indices as DHR average. | |
| DHRPAR average | FLOAT32 -9999 = fill |
Average of DHR integrated over the Photosynthetically Active Radiation (PAR) band. | |
| DHRPAR average count | INT32 | Count of DHRPAR values used in DHRPAR average. Same indices as DHRPAR average. | |
| DHR Shortwave approximation average | FLOAT32 -9999 = fill |
Average of DHR for a broad shortwave band (400 - 2500 nm), approximated from visible bands. This is indexed by y, x. | |
| DHR Shortwave approximation average count | INT32 | Count of DHR Shortwave approximation values used in DHR Shortwave approximation average. Same indices as DHR Shortwave approximation average. | |
| FPAR average | FLOAT32 -9999 = fill |
Average of Fractional absorbed Photosynthetically Active Radiation (FPAR). Defined as PAR irradiance absorbed by live vegetation divided by incident PAR irradiance. This is indexed by y, x. | |
| FPAR average count | INT32 | Count of FPAR values used in FPAR average. Same indices as FPAR average. | |
| LAI average | FLOAT32 -9999 = fill |
Average of Leaf Area Index (LAI). This is indexed by y, x. | |
| LAI average count | INT32 | Count of LAI values used in LAI average. Same indices as LAI average. | |
| NDVI average | FLOAT32 -9999 = fill |
Average of Normalized Difference Vegetation Index (NDVI). This is indexed by y, x. | |
| NDVI average count | INT32 | Count of NDVI values used in NDVI average. Same indices as NDVI average. | |
| Component Global Albedo
Product (CGAS): MIL3DAL, MIL3MAL, MIL3QAL | |||
| Grid | Field | Data type | Description |
| AlbedoAverage_1_degree | Expansive albedo average - 1 deg | FLOAT32 -9999 = fill |
Average of the expansive albedo This is indexed by y, x, band.
Band is 0 = Blue (443 nm), 1 = Green (555 nm), 2 = Red (670 nm), 3 = Infrared (865 nm), 4 = Broadband |
| Expansive albedo standard deviation - 1 deg | FLOAT32 -9999 = fill |
Standard deviation of the expansive albedo This is indexed by y, x, band. | |
| Expansive albedo swath count - 1 deg | INT32 | Number of swaths that contribute to average of the expansive albedo This is indexed by y, x, band. | |
| Restrictive albedo average - 1 deg | FLOAT32 -9999 = fill |
Average of the restrictive albedo This is indexed by y, x, band. | |
| Restrictive albedo standard deviation - 1 deg | FLOAT32 -9999 = fill |
Standard deviation of the restrictive albedo This is indexed by y, x, band. | |
| Restrictive albedo swath count - 1 deg | INT32 | Number of swaths that contribute to average of the restrictive albedo This is indexed by y, x, band. | |
| Local albedo average - 1 deg | FLOAT32 -9999 = fill |
Average of the local albedo This is indexed by y, x, band. | |
| Local albedo standard deviation - 1 deg | FLOAT32 -9999 = fill |
Standard deviation of the local albedo This is indexed by y, x, band. | |
| Local albedo swath count - 1 deg | INT32 | Number of swaths that contribute to average of the local albedo This is indexed by y, x, band. | |
| AlbedoAverage_5_degree | Expansive albedo average - 5 deg | FLOAT32 -9999 = fill |
Average of the expansive albedo This is indexed by y, x, band.
Band is 0 = Blue (443 nm), 1 = Green (555 nm), 2 = Red (670 nm), 3 = Infrared (865 nm), 4 = Broadband |
| Expansive albedo standard deviation - 5 deg | FLOAT32 -9999 = fill |
Standard deviation of the expansive albedo This is indexed by y, x, band. | |
| Expansive albedo swath count - 5 deg | INT32 | Number of swaths that contribute to average of the expansive albedo This is indexed by y, x, band. | |
| Restrictive albedo average - 5 deg | FLOAT32 -9999 = fill |
Average of the restrictive albedo This is indexed by y, x, band. | |
| Restrictive albedo standard deviation - 5 deg | FLOAT32 -9999 = fill |
Standard deviation of the restrictive albedo This is indexed by y, x, band. | |
| Restrictive albedo swath count - 5 deg | INT32 | Number of swaths that contribute to average of the restrictive albedo This is indexed by y, x, band. | |
| Local albedo average - 5 deg | FLOAT32 -9999 = fill |
Average of the local albedo This is indexed by y, x, band. | |
| Local albedo standard deviation - 5 deg | FLOAT32 -9999 = fill |
Standard deviation of the local albedo This is indexed by y, x, band. | |
| Local albedo swath count - 5 deg | INT32 | Number of swaths that contribute to average of the local albedo This is indexed by y, x, band. | |
