MODIS Terra Daily Surface Reflectance Estimates at 500m Resolution

MODIS/Terra Near Real Time Surface Reflectance Daily L2G Global product provides estimates of surface spectral reflectance for seven bands, corrected for atmospheric effects. The data is processed from MODIS Level 1B land bands 1-7 by the LANCEMODIS organization. It serves as input for generating several derived land products.

Use Cases

• Calculate vegetation indices like NDVI using corrected reflectance values from bands 1 and 2.
• Monitor land surface changes by analyzing temporal patterns in the seven spectral reflectance bands.
• Assess atmospheric correction accuracy by comparing Band 26 cirrus cloud detection with surface reflectance estimates.
• Generate inputs for BRDF models using the spatially gridded surface reflectance data.
• Support snow and ice detection algorithms using reflectance values from specific spectral bands.

Strengths

• Provides surface reflectance estimates corrected for atmospheric gases, aerosols, and thin cirrus clouds.
• Includes seven spectral bands, enabling multi-spectral analysis.
• Data is gridded globally at a 500m spatial resolution on a SIN grid.

Limitations

• Specific row count, temporal coverage, and update frequency are unknown.
• Relies on climatology data if real-time MODIS atmospheric products are unavailable, potentially reducing accuracy.
• Product quality depends on Level 1B pixel quality control, which may exclude some observations.

Provenance

Source

LANCEMODIS organization via NASA Earthdata platform.

Collection Method

Computed from MODIS Terra Level 1B land bands 1-7 using atmospheric correction schemes.

Time Range

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Freshness

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Geography

Global coverage on a 500m SIN grid.