@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .

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  <http://meta.icos-cp.eu/ontologies/cpmeta/hasName> "SITES_Spectral_Phenocams_User_Manual_2026_v1.0_final_Draft.pdf";
  <http://purl.org/dc/terms/description> """Authors: 
José M. Beltrán-Abaunza 
Lars Eklundh 
Contributors: 
Shangharsha Thapa 

Lars Eklundh 
Release: 1.0 - draft

The SITES Spectral Phenocam Data User Manual provides comprehensive guidance for the 
installation and use of phenocam data for monitoring of vegetation phenology carried out by the 
Swedish Infrastructure for Ecosystem Science (SITES). This infrastructure operates high-
resolution digital cameras to capture temporal dynamics of vegetation at stations spanning 
diverse Swedish ecosystems from the Arctic to temperate regions. 
The phenocam network serves as a critical tool for understanding vegetation responses to 
climate change, bridging the gap between ground-based observations and satellite remote 
sensing. The cameras provide continuous, automated monitoring that captures fine scale 
phenological transitions including leaf emergence, senescence, and snow dynamics. 
The system delivers four processing levels: L0 (raw images with EXIF metadata), L1 (quality-
controlled imagery), L2 (vegetation indices and ROI statistics), and L3 (daily solar-weighted 
aggregates). Key metrics include Green Chromatic Coordinate (GCC), Red Chromatic Coordinate 
(RCC), and raw RGB channel values, all processed through standardized ROI (Region of Interest) 
analysis. 
The network employs Mobotix cameras (with some exceptions) mounted at standardized heights 
and orientations, with automated image capture every half an hour up to 2 hours during daylight. 
Processing pipelines include solar weighting corrections (based on Lambert's cosine law), 
automated quality assessment flagging poor visibility or extreme conditions, and SITES-
compliant data formatting for seamless integration with the SITES Data Portal. 
 All L2 and L3 products are openly accessible through the SITES Data Portal 
(https://data.fieldsites.se/portal/), following standardized naming conventions and metadata 
schemas. The system ensures interoperability across stations through rigorous protocols for 
platform naming, instrument IDs, and product codes. 
The phenocam data supports research on vegetation-climate feedback, phenological trend 
analysis, validation of satellite observations, and ecosystem productivity modelling. The high 
temporal resolution (sub-daily to daily) fills critical gaps in understanding rapid ecosystem 
responses to environmental changes. 
Creation Date: 2025 02 25 
Last Modified: 2026-01-27""";
  <http://purl.org/dc/terms/title> "Phenocam Data User Manual";
  <http://purl.org/dc/terms/creator> <https://meta.fieldsites.se/resources/organizations/sitesSpectral> .