Remotely Sensed Permafrost Active Layer Thickness Near Prudhoe Bay

NASA's dataset provides gridded, 100-meter resolution estimates of mean active layer thickness, seasonal subsidence, and subsidence trend for an area near Prudhoe Bay, Alaska from 1992 to 2000. The data were generated using an Interferometric Synthetic Aperture Radar (InSAR) technique and validated with ground-based measurements. It was developed in support of the Arctic-Boreal Vulnerability Experiment (ABoVE) campaign.

Use Cases

• Modeling permafrost thaw dynamics and carbon feedback using gridded active layer thickness (ALT) estimates.
• Validating and scaling up point-based ground measurements with spatially continuous seasonal subsidence data.
• Analyzing long-term subsidence trends (mm/yr) to assess landscape stability and infrastructure risk in the Arctic.
• Monitoring changes in the active layer over a nine-year period (1992-2000) for climate impact studies.

Strengths

• Data validation involved comparison with ground-based ALT measurements at multiple sites.
• Provides a nine-year time series (1992-2000) of mean conditions for a key Arctic region.
• Offers high spatial resolution with gridded 100-meter estimates for parameters like ALT and subsidence trend.

Limitations

• Sources conflict on the last updated date, with one listing 2000-12-31 and others listing 2026-03-12.
• Specific row counts, file sizes, and detailed column names are not provided across platforms.
• Temporal coverage is limited to a historical snapshot (1992-2000) and may not reflect recent conditions.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Produced by an Interferometric Synthetic Aperture Radar (InSAR) technique measuring seasonal surface subsidence.

Time Range

1992 to我们发现2000

Freshness

2026-03-12 22:35:42.908315

Geography

Area near Prudhoe Bay, Alaska, on the Arctic coastal plain.