FASIR-Adjusted NDVI Satellite Record for Vegetation Monitoring

FASIR-adjusted NDVI data provides a 17-year, monthly satellite record of photosynthetic activity in terrestrial vegetation from 1982 to 1998. The dataset includes three files at 0.25, 0.5, and 1.0-degree spatial resolutions, with corrections applied to reduce noise from atmospheric and sensor effects. It was produced as part of NASA's ISLSCP Initiative II, funded by NASA's Land Surface Hydrology program and the Higher Education Funding Council for Wales.

Use Cases

• Inputting corrected NDVI values into climate models to calculate land-surface energy absorption and release.
• Feeding monthly NDVI time series into biogeochemical models to estimate global photosynthesis and carbon exchange.
• Analyzing long-term vegetation change by using the adjusted index values, which minimize variations from calibration and view geometry.
• Deriving associated biophysical parameters, such as leaf area index or fraction of absorbed photosynthetically active radiation, as separate model inputs.

Strengths

• Provides a 17-year continuous monthly time series (1982-1998) for analyzing long-term vegetation trends.
• Includes data at three standard spatial resolutions (0.25, 0.5, and 1.0 degree) for flexible analysis scales.
• Applies Fourier-Adjusted, Sensor and Solar zenith angle corrections to reduce noise unrelated to actual vegetation change.

Limitations

• Conflicting last updated dates exist between sources (1998-12-31 and 2026-03-13), creating uncertainty about metadata maintenance.
• Specific column names, row counts, and file sizes are not provided by any source platform.
• The license is only specified as 'other-license-specified', requiring users to seek clarification.

Provenance

Source

NASA's Land Surface Hydrology program and the Higher Education Funding Council for Wales (HEFCW) for the ISLSCP Initiative II.

Collection Method

Generated from satellite data, applying Fourier adjustment and corrections for sensor, solar zenith angle, interpolation, and reconstruction.

Time Range

1982 to 1998

Freshness

2026-03-13 01:33:16.135583

Geography

Global terrestrial coverage at 0.25, 0.5, and 1.0-degree latitude/longitude resolutions.