Overview
| DOI | https://doi.org/10.3334/ORNLDAAC/2430 |
|---|---|
| Version | 1 |
| Project | |
| Published | 2025-09-15 |
Description
This dataset provides weekly surface water occurrence across lakes and ponds in six study regions: the Alaskan Coastal Plain, Yukon Flats, Yukon Kuskokwim Delta, Mackenzie River Delta, Tuktoyaktuk Peninsula, and Anderson Plain. The study regions are in Alaska, US, and Yukon and Northwest Territories, Canada. This binary (water or not water) raster product is built from Sentinel-2 imagery and a maximum lake extent vector product also produced from Sentinel-2 imagery. When cloud-free imagery was available, raster files were produced at 10 m spatial resolution and weekly temporal resolution during the ice-free season (May-September) for the period 2016-2023. Open water was differentiated from land using an adaptive NDWI threshold water classification algorithm and then clipped to the lake and ponds vector product so that only lake and pond water is reported. The data are provided in netCDF format along with two Jupyter notebooks holding code used for this analysis.
Science Keywords
- BIOSPHERE
- ECOSYSTEMS
- FRESHWATER ECOSYSTEMS
- LAKE/POND
- TERRESTRIAL HYDROSPHERE
- SURFACE WATER
- SURFACE WATER PROCESSES/MEASUREMENTS
- INUNDATION
- TERRESTRIAL HYDROSPHERE
- SNOW/ICE
- LAKE ICE
- TERRESTRIAL HYDROSPHERE
- SURFACE WATER
- SURFACE WATER FEATURES
- LAKES/RESERVOIRS
Data Use and Citation
This dataset is openly shared, without restriction, in accordance with the NASA Earthdata Data Use Guidance.
Data Files
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Companion Files
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Dataset Companion Files
Dataset has 1 companion files.
- Lakes_Ponds_Weekly_Occurrence.pdf