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Harvard Forest Data Archive

HF158

PhenoCam Images and Canopy Phenology at the Harvard Forest EMS Tower since 2008

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Data

Overview

  • Lead: Andrew Richardson
  • Investigators: William Munger
  • Contact: Information Manager
  • Start date: 2008
  • End date: 2021
  • Status: ongoing
  • Location: Prospect Hill Tract (Harvard Forest)
  • Latitude: +42.54
  • Longitude: -72.17
  • Elevation: 340 meter
  • Taxa:
  • Release date: 2021
  • Revisions:
  • EML file: knb-lter-hfr.158.14
  • DOI: digital object identifier
  • EDI: data package
  • DataONE: data package
  • Related links:
  • Study type: long-term measurement
  • Research topic: ecological informatics and modelling; forest-atmosphere exchange; ; regional studies
  • LTER core area: primary production, populations
  • Keywords: canopies, imagery, leaves, phenology, remote sensing
  • Abstract:

    The PhenoCam Network uses imagery from digital cameras to track vegetation phenology and seasonal changes in vegetation activity in diverse ecosystems across North America and around the world. Imagery is uploaded to the PhenoCam server at the University of New Hampshire, where it is made publicly available in near-real time, every 30 minutes from sunrise to sunset, 365 days a year.

    The data are processed using simple image analysis tools to yield a measure of canopy greenness, from which phenological metrics are extracted, characterizing the start and end of the growing season. These transition dates have been shown to align well with on-the-ground observations of tree phenology at Harvard Forest (HF003). Long-term PhenoCam data can be used to track the impact of climate variability and change on the rhythm of the seasons.

    This dataset contains one mid-day image for each camera. Please see the PhenoCam Network website (http://phenocam.sr.unh.edu) for more information and additional images.

  • Methods:

    Webcams at this location record images at 30-minute intervals during daylight hours. These images are then uploaded to the project archive at the University of New Hampshire.

    EMS Tower 1

    The first EMS Tower camera (since 2008) is mounted on the EMS Tower at a height of 30 meters with a view toward the north.

    EMS Tower 2

    The second EMS Tower camera (since 2021) is mounted on the EMS Tower at a height of 30 meters with a view toward the north.

    EMS Below Canopy

    The Below Canopy camera (since 2009) is mounted on the EMS Tower at a height of 15 meters and pointed toward the ground.

  • Use:

    This dataset is released to the public under Creative Commons CC0 1.0 (No Rights Reserved). Please keep the dataset creators informed of any plans to use the dataset. Consultation with the original investigators is strongly encouraged. Publications and data products that make use of the dataset should include proper acknowledgement.

  • Citation:

    Richardson A. 2021. PhenoCam Images and Canopy Phenology at the Harvard Forest EMS Tower since 2008. Harvard Forest Data Archive: HF158 (v.14). Environmental Data Initiative: https://doi.org/10.6073/pasta/d486bc1e9ec079dfd7a2cac3f54aba2f.

Detailed Metadata

hf158-01: EMS Tower 1 images

  • Compression: zip
  • Format: jpeg
  • Type: image

hf158-02: EMS Tower 2 images

  • Compression: zip
  • Format: jpeg
  • Type: image

hf158-03: EMS Tower below canopy images

  • Compression: zip
  • Format: jpeg
  • Type: image