ABoVE: Upscaled Active Layer Thickness in Northern Alaska, 2014-2017

The dataset consists of maps of estimated Active Layer Thickness (ALT) at 30-m resolution throughout the northern half of Alaska for the years 2014, 2015, and 2017. The maps were generated by using a machine learning-based regression and a set of spatial data layers to upscale ALT from narrow swaths of ALT that were retrieved from airborne high-resolution P-band Polarimetric Synthetic Aperture Radar (PolSAR) imagery. The data are provided in cloud-optimized GeoTIFF format.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated August 18, 2026, 01:25 (UTC)
Created April 1, 2025, 14:09 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 98a365c6-e7d3-4aa1-8aff-27ef27e3ac66
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/2332
license https://www.usa.gov/government-works
modified 2026-08-10T22:16:01Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash e21dd8a6d223898b6909c040a79738764dd7d39debe901cf8e3c111bebddde17
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -171.803, "NorthBoundingCoordinate": 74.7203, "EastBoundingCoordinate": -133.048, "SouthBoundingCoordinate": 59.3494}]]
temporal 2014-01-01/2017-12-31
theme {"Earth Science"}