MISR Regional SAMUM Products |
 |
MISR Regional Imagery: Overview | Products | Data Quality | Map Projection | File Format | View Data | Download Data
There are currently three types of MISR Regional products: Radiance, Aerosol, and Land Surface. Each product summarizes selected parameters from one Level 1 or Level 2 product.
Further information about the Level 1 and Level 2 data products can be found on the MISR SAMUM data table, and by consulting the Algorithm Theoretical Basis Documents.
Before using MISR Data products, please read the documentation including Data Quality and Versioning statements available from the MISR SAMUM data table.
Images available on this web site include the following parameters:
| Component Global Georectified Radiance Product (CGGRP): MI3DRDR, MI3MRDR, MI3QRDR, MI3YRDR |
||
|---|---|---|
| Parameter | Definition | Sample |
| Radiance | Radiance data for 4 bands and 9 view angles (details on the MISR instrument).
Summary of Level 1 TERRAIN (land) and ELLIPSOID (ocean), Radiance/RQI field. |
 |
| Component Global Aerosol Product (CGAS): MI3DAER, MI3MAER, MI3QAER, MI3YAER |
||
| Parameter | Definition | Sample |
| Optical Depth | Aerosol Optical depth, green (558 nm) band.
Summary of Level 2 AEROSOL, RegMeanSpectralOptDepth field. |
 |
| Component Global Land Surface Product (CGLS): MI3DLSR, MI3MLSR, MI3QLSR, MI3YLSR |
||
| Parameter | Definition | Sample |
| DHR | Directional Hemispheric Reflectance (DHR). Spectral albedo of the surface in the absence of the atmosphere. Also known as "black sky" albedo.
Summary of Level 2 LAND, LandDHR field. |
 |
| DHRPAR | DHR integrated over the Photosynthetically Active Radiation (PAR) band.
Summary of Level 2 LAND, DHRPAR field. |
 |
| DHRSW | DHR for a broad shortwave band (400-2500 nm), approximated from visible bands.
Derived from a linear combination of MISR bands found in the Level 2 LAND, DHR field. Weiss et al.1 |
 |
| FPAR | Fractional absorbed Photosynthetically Active Radiation (FPAR). Defined as PAR irradiance absorbed by live vegetation divided by incident PAR irradiance.
Summary of Level 2 LAND, FPARBestEstimate field. |
 |
| LAI | Leaf Area Index (LAI).
Summary of Level 2 LAND, LAIBestEstimate. |
 |
| NDVI | Normalized Difference Vegetation Index (NDVI).
Summary of Level 2 LAND, NDVI field. |
 |
1. Weiss M, Baret F, Leroy M, Begue A, Hautecoeur O, Santer R, "Hemispherical reflectance and albedo estimates from the accumulation of across-track sun-synchronous satellite data," J. Geophysical Res. - Atmospheres, 104 (D18) 22221-22232, September 27, 1999.