Daily MODIS Terra and Aqua Surface Reflectance Data via MAIAC Algorithm

Surface spectral reflectance estimates from the combined MODIS Terra and Aqua satellites, corrected for atmospheric gases and aerosols using the Multi-Angle Implementation of Atmospheric Correction algorithm. The product provides daily global data at a 0.05-degree resolution grid. It is generated by LPCLOUD for NASA Earthdata.

Use Cases

• Analyze land surface changes using the Nadir BRDF-Adjusted Reflectance (NBAR) values for bands 1-7.
• Compare atmospheric correction methods by evaluating Bidirectional Reflectance Factor (BRF) and normalized BRF across seven spectral bands.
• Assess data quality for specific regions using the Quality Assessment (QA) bits layer.
• Model solar geometry effects on reflectance using the cosine of solar zenith angle, cosine of view zenith angle, and relative azimuth angle columns.
• Monitor daily global surface reflectance patterns across the 0.05-degree Climate Modeling Grid.

Strengths

• Provides reflectance data for seven spectral bands (1-7).
• Includes 25 distinct Science Dataset layers per grid cell.
• Offers daily temporal resolution on a global 0.05-degree grid.

Limitations

• Known issues exist, requiring consultation of external documentation for complete assessment.
• Specific data quality metrics like row counts or sample sizes are not provided.
• The atmospheric correction algorithm's performance may vary under extreme conditions.

Provenance

Source

LPCLOUD for NASA Earthdata.

Collection Method

Generated from MODIS Terra and Aqua satellite data using the MAIAC atmospheric correction algorithm.

Time Range

null

Freshness

daily

Geography

global