ABoVE: Active Layer Thickness from Remote Sensing Permafrost Model, Alaska, 2001-2015

This dataset provides annual estimates of active layer thickness (ALT) at 1 km resolution across Alaska from 2001-2015. The ALT was estimated using a remote sensing-based soil process model incorporating global satellite data from Moderate Resolution Imaging Spectroradiometer (MODIS) land surface temperature (LST) and snow cover extent (SCE), and Soil Moisture Active and Passive (SMAP) satellite soil moisture records. The study area covers the majority land area of Alaska except for areas of perennial ice/snow cover or open water. The ALT was defined as the maximum soil thawing depth throughout the year. The mean ALT and mean uncertainty from 2001 to 2015 are also provided.

Data and Resources

Field Value
accessLevel public
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.nasa.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
citation Yi, Y., and J.S. Kimball. 2020. ABoVE: Active Layer Thickness from Remote Sensing Permafrost Model, Alaska, 2001-2015. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1760
graphic-preview-description Model-simulated 1 km mean active layer thickness (ALT) map from 2001 to 2015. Black dots are locations of circumpolar active layer monitoring (CALM) sites used for comparison of observed ALT to modeled ALT. CALM data are not provided. The areas with ALT greater than 300 cm depth are shown in dark gray. (Source: Yi et al. 2018)
graphic-preview-file https://daac.ornl.gov/ABOVE/guides/Sat_ActiveLayer_Thickness_Maps_Fig1.png
identifier C1738245291-ORNL_DAAC
issued 2020-05-06
landingPage https://doi.org/10.3334/ORNLDAAC/1760
language {en-US}
metadata_type geospatial
modified 2020-05-07
programCode {026:001}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 033c47e54ce541898e39a21a8e00c39972526329
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-179.18, 55.57], [-132.58, 55.57], [-132.58, 70.21], [-179.18, 70.21], [-179.18, 55.57]]]}
temporal 2001-01-01T00:00:00Z/2015-12-31T23:59:59Z
theme {ABoVE,geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • cryosphere
  • earth-science
  • frozen-ground
  • geo
  • geoss
  • land-surface
  • national
  • national-geospatial-data-asset
  • ngda
  • north-america
  • snow-ice
  • soils
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer undefined
maintainer_email uso@daac.ornl.gov
metadata_created 2025-11-21T02:12:12.179191
metadata_modified 2025-11-21T02:12:12.179195
notes This dataset provides annual estimates of active layer thickness (ALT) at 1 km resolution across Alaska from 2001-2015. The ALT was estimated using a remote sensing-based soil process model incorporating global satellite data from Moderate Resolution Imaging Spectroradiometer (MODIS) land surface temperature (LST) and snow cover extent (SCE), and Soil Moisture Active and Passive (SMAP) satellite soil moisture records. The study area covers the majority land area of Alaska except for areas of perennial ice/snow cover or open water. The ALT was defined as the maximum soil thawing depth throughout the year. The mean ALT and mean uncertainty from 2001 to 2015 are also provided.
num_resources 7
num_tags 16
title ABoVE: Active Layer Thickness from Remote Sensing Permafrost Model, Alaska, 2001-2015