MODIS/Aqua Level-1A Near Real Time product provides raw instrument radiance counts for 36 spectral bands. Data includes all detector views and is packaged into 5-minute swath granules with quality indicators for missing or bad pixels. The dataset is produced by the LANCEMODIS organization.
Use Cases
- Calibrate higher-level MODIS products using raw detector counts and engineering data from all 36 spectral bands.
- Monitor diurnal cycles by analyzing thermal infrared radiances measured during both day and night portions of the orbit.
- Assess data quality and instrument performance using the added quality indicators for missing pixels and instrument modes.
- Compare spectral responses across 250 m, 500 m, and 1 km spatial resolutions for different land cover types.
- Filter daytime-only measurements for visible, SWIR, and NIR bands or night-mode measurements for bands 20-36.
Strengths
- Contains data for all 36 MODIS spectral bands across multiple spatial resolutions.
- Includes all detector views: Earth, solar diffuser, SRCA, black body, and space view.
- Provides near real-time data delivery for time-sensitive analysis.
Limitations
- Specific row count, file size, and temporal coverage are unknown.
- Visible, SWIR, and NIR band measurements are unavailable for night-time analysis.
- Data is raw Level-1A, requiring further processing for most analytical applications.
Provenance
- Source
- NASA Earthdata via the LANCEMODIS organization.
- Collection Method
- Raw instrument data from the MODIS sensor on the Aqua satellite, reformatted and packaged into granules.
- Time Range
- null
- Freshness
- Near real-time.
- Geography
- Global coverage from satellite swaths.