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

Published by ORNL_DAAC | National Aeronautics and Space Administration | Metadata Last Checked: February 21, 2026 | Last Modified: 2026-02-17
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.

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Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
                                            [
  "026:00"
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}
description 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.
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identifier 10.3334/ORNLDAAC/1781
keyword 
                                            [
  "earth-science-ecological-dynamics-biosphere-ecosystem-functions-photosynthesis",
  "earth-science-surface-radiative-properties-land-surface-reflectance",
  "earth-science-vegetation-biosphere-plant-characteristics"
]
landingPage https://search.earthdata.nasa.gov/search?q=Radial_Growth_PRI_1781&ac=true
modified 2026-02-17
programCode 
                                            [
  "026:000"
]
publisher 
                                            {
  "name": "ORNL_DAAC",
  "@type": "org:Organization"
}
spatial 
                                            "[[{"WestBoundingCoordinate":-149.76,"NorthBoundingCoordinate":68.0194,"EastBoundingCoordinate":-149.718,"SouthBoundingCoordinate":67.9721}],"CARTESIAN"]"
temporal 2018-05-01/2018-05-01
theme 
                                            [
  "Earth Science"
]
title ABoVE: Photochemical Reflectance and Tree Growth, Brooks Range, Alaska, 2018-2019

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