MMR Calibration Data: FIFE Ground Radiance Measurements

NASA's 1987 and 1989 Modular Multiband Radiometer (MMR) data provides a ground-truth baseline for calibrating airborne and satellite sensors. Radiance measurements from a stationary, near-lambertian panel were used to monitor solar insolation, cloud cover, and calculate reflectance factors for vegetation. This dataset was a core component of the First ISLSCP Field Experiment (FIFE), supporting atmospheric and biospheric remote sensing research.

Use Cases

• Calibrating airborne or satellite sensor reflectance data based on ground-based radiance measurements.
• Monitoring temporal changes in solar insolation and cloud cover during field campaigns.
• Calculating reflectance factors for vegetation studies using the described calibration panel methodology.
• Validating historical atmospheric radiation models for the FIFE study area.

Strengths

• Data collected during two dedicated field campaigns in the summers of 1987 and 1989, providing temporal depth.
• Originates from NASA, a leading authority in Earth observation science.
• Designed specifically for calibrating other MMR instruments, indicating a controlled, reference-grade purpose.

Limitations

• Critical metadata is missing: column names, row counts, and file sizes are unknown across all sources.
• Sources conflict on last update date (1989 vs. 2026), creating uncertainty about metadata maintenance.
• Data is over 30 years old, which may limit its applicability to modern sensor systems without careful contextualization.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Data collected via a stationary Modular Multiband Radiometer (MMR) instrument monitoring a calibration panel.

Time Range

Summer 1987, July and August 1989

Freshness

Last updated metadata varies by source: 1989-08-11 (nasa_earthdata) and 2026-04-10 (datagov).

Geography

First ISLSCP Field Experiment (FIFE) study area (central site)