63 Ground Control Points (GCPs) were measured near Barrow, Alaska, during summer 2001 using Differential GPS. The points, concentrated within 2 km of the Chukchi coast, were collected by the Alaska North Slope Climate Impact Assessment (ANSCIA) project funded by the National Science Foundation. They assist in establishing precise coordinates for field sites and georectifying aerial and satellite imagery.
Use Cases
- Georectify aerial photography using precise UTM coordinates from GCPs measured on building corners.
- Establish geographic coordinates for field sites using GCPs measured on snowfence ends and telephone pole bases.
- Validate satellite imagery geolocation accuracy against surveyed GCP points near the Chukchi coast.
Strengths
- 63 surveyed Ground Control Points provide specific reference locations.
- Points cover a defined area concentrated within 2 km of the Chukchi coast.
- Data collected using Differential GPS for high positional accuracy.
Limitations
- Small sample size of only 63 points limits spatial coverage.
- Data is from a single summer season in 2001 and may not reflect current conditions.
- Specific coordinate values and metadata for each point are not detailed in the provided description.
Provenance
- Source
- Alaska North Slope Climate Impact Assessment (ANSCIA) project, funded by NSF's Human Dimensions of the Arctic System.
- Collection Method
- Measured using Differential GPS on features like building corners, snowfence ends, and telephone poles.
- Time Range
- Summer 2001
- Geography
- Barrow, Alaska, USA, concentrated within 2 km of the Chukchi coast.