NOAA NCEI provides one-meter panchromatic and four-meter multispectral IKONOS satellite imagery for Asuncion Island in the Northern Mariana Islands. The imagery was processed to minimize atmospheric and water column effects to support coral reef mapping and time series analysis. Data collection was a cooperative effort involving NOAA, the University of Hawaii, and Analytical Laboratories of Hawaii, with imagery purchased and processed between 2001 and 2003.
Use Cases
- Delineating coral reef community structure boundaries using the one-meter panchromatic imagery for high-detail mapping.
- Analyzing coral health over time by comparing the four-meter multispectral bands across the 2001-2003 time range.
- Creating habitat maps by photointerpreting feature boundaries visible in the processed multispectral imagery.
- Assessing water column effects by comparing raw and atmospherically corrected imagery versions.
Strengths
- Includes both one-meter panchromatic and four-meter multispectral data for each study area.
- Imagery is processed to correct for atmospheric and water column effects, enhancing analytical utility.
- Data supports time series analysis across a defined 2001-2003 period.
Limitations
- Temporal coverage is limited to a short, historical window (2001-2003) and is not updated.
- Spatial coverage is restricted to specific study areas, primarily Asuncion Island.
- Sample size and specific row/column counts for the imagery files are unknown.
Provenance
- Source
- NOAA National Centers for Environmental Information (NCEI), originating from a project with the National Ocean Service and University of Hawaii.
- Collection Method
- Purchased and processed commercial IKONOS satellite imagery.
- Time Range
- 2001 to 2003
- Freshness
- null
- Geography
- Asuncion Island and other study areas in the Northern Mariana Islands.