Tower-based PhotoSpec Products for the 2019 and 2020 Spring Transition Season, SK, CA

This dataset includes daily averaged solar-induced chlorophyll fluorescence (SIF) in the red (680-686 nm) and far-red (745-758 nm) wavelength ranges, relative SIF (SIF/Intensity), chlorophyll-carotenoid index (CCI), photochemical reflectance index (PRI), near-infrared vegetation index (NIRv), and normalized difference vegetation index (NDVI) for both black spruce (Picea mariana) and larch (Larix laricina) targets. The study site (Southern Old Black Spruce, SOBS Fluxnet ID CA-Obs) is located near the southern limit of the boreal forest ecotone in Saskatchewan, Canada. Data were collected for the spring transition in both 2019 and 2020 using PhotoSpec. Species-specific averages were calculated over each 30-minute period, then averaged again to report daily averages of SIF relative and reflectance measurements for both black spruce and larch.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated June 23, 2026, 01:48 (UTC)
Created April 1, 2025, 19:33 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id ecb39cd0-a3e7-4325-b936-dc7953a1adee
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/1887
license https://www.usa.gov/government-works
modified 2026-06-15T22:16:01Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash cb48fa0aa80cfdc7578b76df0229b843e0830415363cf2bd05e367f4f193f647
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -105.12, "NorthBoundingCoordinate": 53.98, "EastBoundingCoordinate": -105.11, "SouthBoundingCoordinate": 53.97}]]
temporal 2019-03-20/2020-06-26
theme {"Earth Science"}