ABoVE: Active Layer Thickness from Airborne L- and P- band SAR, Alaska, 2017, Ver. 3

This dataset provides estimates of seasonal subsidence, active layer thickness (ALT), the vertical soil moisture profile, and uncertainties at a 30 m resolution for 51 sites across the ABoVE domain, including 39 sites in Alaska and 12 sites in Northwest Canada. The ALT and soil moisture profile retrievals simultaneously use L- and P-band synthetic aperture radar (SAR) data acquired by the NASA/JPL Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) instruments during the 2017 Arctic Boreal Vulnerability Experiment (ABoVE) airborne campaign. The data are provided in NetCDF Version 4 format along with a python script for estimating soil volumetric water content from data.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated September 15, 2026, 02:43 (UTC)
Created April 1, 2025, 14:04 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 1e4ff6ac-b0a6-4520-ab78-2825b403029b
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/2004
license https://www.usa.gov/government-works
modified 2026-09-07T22:16:01Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash c2af1f1f359f46d8f07193d1902ab7824e0b4bc9c97ea812be6a84b91475a807
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -166.733, "NorthBoundingCoordinate": 71.5212, "EastBoundingCoordinate": -110.418, "SouthBoundingCoordinate": 57.8294}]]
temporal 2017-06-19/2017-09-16
theme {"Earth Science"}