Spectral Reflectance and Ancillary Data, Tundra Transect, North Slope, AK, 2000-2022

This dataset provides visible-near infrared spectral reflectance, descriptions of vegetation cover, surface temperature, the total fraction of absorbed photosynthetically active radiation (fAPAR, 2001 only), permafrost active layer depth, elevation, and soil temperature at 5 cm depth. Measurements were made at every meter along a 100-m transect aligned mainly in an east-west direction, located approximately 300 m southeast of the National Oceanic and Atmospheric Administration (NOAA) Global Monitoring Laboratory (GML) baseline observatory near Utqiagvik, Alaska. Reflectance measurements were collected at nearly weekly intervals through the growing seasons of 2000 to 2002 to describe characteristics of green-up, peak growth, and senescence. Reflectance measurements were also collected once near peak growth in 2022. Ancillary measurements were collected at intervals through the 2001 and 2002 growing seasons.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated May 18, 2026, 21:13 (UTC)
Created April 1, 2025, 19:14 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id e53a744b-8716-4c7e-aaae-84686abba1e9
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/2232
license https://www.usa.gov/government-works
modified 2026-05-14T22:12:41Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 3a86f1e50cc50c1d8a2073fc23efb17674f043f3473553f077660149c212b2f4
source_schema_version 1.1
spatial [[{"WestBoundingCoordinate":-156.604,"NorthBoundingCoordinate":71.3221,"EastBoundingCoordinate":-156.602,"SouthBoundingCoordinate":71.322}],"CARTESIAN"]
temporal 2000-06-30/2022-08-08
theme {"Earth Science"}