Kumar, Ravindra; Vijay, Saurabh: Inventory of Glacial Lakes in High Mountain Asia for the Years 2016 and 2022 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.983845 (dataset in review)
Abstract:
We have developed an updated and comprehensive inventory of glacial lakes across High Mountain Asia (HMA) for the year 2022, identifying a total of 31,698 glacial lakes. This inventory was created by integrating multi-source remote sensing datasets, including Landsat-8, Sentinel-1, Sentinel-2, and the Copernicus DEM. We achieved a high detection accuracy of 96% for smaller glacial lakes (20,000–100,000 m²) and successfully detected all larger glacial lakes with high delineation accuracy. Additionally, we generated median lake boundaries for two epochs (2016 and 2022) by using median composites of all available imagery for each period to minimize the influence of seasonal variations in lake extents. This database can serve as a valuable resource for monitoring GLOFs, downstream risk assessment, and water resource management in the region.
Coverage:
Median Latitude: 47.219391 * Median Longitude: 74.634627 * South-bound Latitude: 26.970315 * West-bound Longitude: 45.402397 * North-bound Latitude: 67.468491 * East-bound Longitude: 103.866893
Event(s):
Glacial_Lake_2016_median * Latitude Start: 67.468491 * Longitude Start: 103.866893 * Latitude End: 26.970315 * Longitude End: 45.402397 * Method/Device: High-resolution multispectral imager, European Space Agency, Sentinel-2 * Comment: Glacial lake inventory shapefile dataset for High Mountain Asia based on median composites of Sentinel-2 imagery from 2016. Each glacial lake polygon includes an attribute specifying image ID used to delineate its boundary.
Glacial_Lake_2022 * Latitude Start: 67.468446 * Longitude Start: 103.866724 * Latitude End: 26.970333 * Longitude End: 45.402469 * Method/Device: High-resolution multispectral imager, European Space Agency, Sentinel-2 * Comment: Glacial lake inventory shapefile dataset for High Mountain Asia derived from individual Sentinel-2 scenes from 2022. Each glacial lake polygon includes an attribute specifying image ID used to delineate its boundary.
Glacial_Lake_2022_median * Latitude Start: 67.468446 * Longitude Start: 103.866808 * Latitude End: 26.970315 * Longitude End: 45.402469 * Method/Device: High-resolution multispectral imager, European Space Agency, Sentinel-2 * Comment: Glacial lake inventory shapefile dataset for High Mountain Asia based on median composites of Sentinel-2 imagery from 2022. Each glacial lake polygon includes an attribute specifying image ID used to delineate its boundary.
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
18 data points