ABoVE: Photochemical Reflectance and Tree Growth, Brooks Range, Alaska, 2018-2019

This dataset provides simultaneous in-situ measurements of the photochemical reflectance index (PRI) and radial tree growth of selected white spruce trees (Picea glauca (Moench) Voss) at the northern treeline in the Brooks Range of Alaska, south of Chandalar Shelf and Atigun Pass on the east side of the Dalton Highway. PRI and dendrometer measurements were simultaneously collected on 29 trees from six plots spaced along a 5.5 km transect from south to north where tree density becomes increasingly sparse. Measurements were made throughout the 2018 and 2019 growing seasons (May 1 to September 15) with a sampling interval of 5 minutes. The data were collected to better understand the suitability of the PRI to remotely track radial tree growth dynamics.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated June 22, 2026, 17:02 (UTC)
Created April 1, 2025, 14:07 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 9d0c3490-be1c-41a5-8584-ba2ba163d26f
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/1781
license https://www.usa.gov/government-works
modified 2026-06-15T22:15:58Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 3b18fffa25992c9e2b2e25384a0a82f90d6de9812e8e991468b872ecfb122c1a
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -149.76, "NorthBoundingCoordinate": 68.0194, "EastBoundingCoordinate": -149.718, "SouthBoundingCoordinate": 67.9721}]]
temporal 2018-05-01/2019-09-13
theme {"Earth Science"}