LCSPP-AVHRR: Long-term Photosynthesis Proxy from Satellite Reflectance, 1982-2000

LCSPP-AVHRR v3.2 is a long-term, reconstructed photosynthesis proxy derived from calibrated AVHRR surface reflectance data. The dataset provides biweekly data at a 0.05° spatial resolution from 1982 to 2000, created by Jianing Fang of Columbia University. It is designed as a solar-induced chlorophyll fluorescence (SIF)-informed proxy for tracking vegetation photosynthetic activity, not as direct SIF measurements.

Use Cases

• Analyzing long-term trends in vegetation photosynthesis based on the SIF-informed proxy from 1982-2000.
• Studying the impact of climate variability on ecosystem productivity using the biweekly, global-coverage data.
• Calibrating or validating terrestrial biosphere models with a consistent, long-term photosynthesis proxy.
• Investigating phenology and seasonal cycles of vegetation using the gap-filled data with quality flags.

Strengths

• Covers a 19-year period from 1982 to 2000, enabling long-term trend analysis.
• Includes a quality flag layer distinguishing observed, gap-filled, and missing data for informed usage.
• Provides data at a consistent 0.05° spatial and biweekly temporal resolution.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The data is a reconstructed proxy, not direct SIF measurements, limiting suitability for estimating fluorescence quantum yield.
• Last update date is unknown; freshness unverified for this specific 1982-2000 segment.

Provenance

Source

Reconstructed from AVHRR satellite surface reflectance data.

Collection Method

Calibration and gap-filling of surface reflectance to create a SIF-informed photosynthesis proxy.

Time Range

1982 to 2000

Geography

Global coverage at 0.05° resolution.