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 May 18, 2026, 21:24 (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 10d3cc80-fa0c-47e4-b684-09a6e8531b48
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 2026-05-14T22:12:41Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash f2488ff69adcff557eefc543413d66b5c8f0638f6a3077b444e0f13c6f7d0e8c
source_schema_version 1.1
spatial [[{"WestBoundingCoordinate":-105.12,"NorthBoundingCoordinate":53.98,"EastBoundingCoordinate":-105.11,"SouthBoundingCoordinate":53.97}],"CARTESIAN"]
temporal 2019-03-20/2020-06-26
theme {"Earth Science"}