ABoVE: Land Cover, Methane Flux, and Environmental Data, Big Trail Lake, Fairbanks AK

This dataset provides field data and gridded land cover and terrain data for an area north of Big Trail Lake, an active thermokarst lake in Goldstream Valley (near Fairbanks, Alaska, USA). Field samples were collected at 56 locations across the study area in June 2021 and August 2022. Field data include chamber-based methane (CH4) and carbon dioxide (CO2) flux, soil moisture, soil temperature, soil pH, vegetation communities, meteorological data, and soil samples. The soil samples were used to conduct SIMPER microbial community analysis and soil chemical analyses and to quantify methanogen and methanotroph relative abundance. Land cover classifications (10 cm spatial resolution) were derived from supervised random forest classifications using RedEdge-MX and multiSPEC-4C multispectral drone imagery, normalized difference vegetation index (NDVI), and USGS 3D Elevation Program (3DEP) digital surface model (DSM) data. RedEdge-MX drone imagery was collected in July 2021 and multiSPEC-4C drone imagery was collected in August 2019. Gridded microtopography and slope estimates were derived at 1 m spatial resolution using USGS 3DEP digital terrain model (DTM) data. Gridded products are provided in cloud-optimized GeoTIFF format, field data are provided in comma-separated values format, and sample location photos in JPEG format are contained within a compressed file.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated October 20, 2026, 11:14 (UTC)
Created June 3, 2026, 00:36 (UTC)
Identifier 10.3334/ORNLDAAC/2393
Modified 2026-10-15T20:12:07Z
Theme {"Earth Science"}
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 287d7f0a-77dd-48e5-8213-5e29852bdca6
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
license https://www.usa.gov/government-works
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 7a2684c92ca57edd3ce4f2b462a8bb979c441f98c161057c4b2ff0ae4d2a6be0
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -147.825, "NorthBoundingCoordinate": 64.9231, "EastBoundingCoordinate": -147.816, "SouthBoundingCoordinate": 64.9201}]]
temporal 2017-05-28/2022-08-23