Daily statistical summaries of land surface parameters from NASA's Multi-angle Imaging SpectroRadiometer (MISR) instrument. The product includes directional hemispherical reflectance (DHR), FPAR, NDVI, and BRF model parameters, reported on a global 0.5-degree by 0.5-degree geographic grid. It is produced by the LARC_CLOUD organization using data from nine pushbroom cameras across four spectral bands.
Use Cases
- Modeling daily fractional absorbed photosynthetically active radiation (FPAR) for carbon cycle studies using the global grid.
- Analyzing vegetation health trends via the DHR-based normalized difference vegetation index (NDVI) across six vegetated land types.
- Calibrating land surface bidirectional reflectance factor (BRF) models with parameters derived from nine camera angles.
- Estimating Leaf Area Index (LAI) for agricultural or ecological monitoring within the classified land types.
- Studying spectral reflectance in the photosynthetically active region (DHR-PAR) and near-infrared band (DHR-NIR) for surface characterization.
Strengths
- Global spatial coverage achieved within a nine-day repeat cycle.
- Data derived from nine cameras providing measurements at five distinct view angles (0, 26.1, 45.6, 60.0, and 70.5 degrees).
- Spectral measurements in four bands centered at 443, 555, 670, and 865 nm.
- Parameters classified into six vegetated and one non-vegetated type for analysis.
Limitations
- Spatial resolution is coarse at 0.5 degrees by 0.5 degrees, limiting fine-scale analysis.
- Daily summaries are statistical averages, losing sub-daily temporal variability.
- Specific row counts, column details, and sample sizes are not provided.
Provenance
- Source
- NASA Earthdata (MISR instrument), LARC_CLOUD organization.
- Collection Method
- Satellite remote sensing data from the MISR instrument's nine pushbroom cameras, processed to Level 3 daily statistical summaries.
- Time Range
- Daily coverage.
- Freshness
- null
- Geography
- Global.