Vertical tree air temperature measurements within the canopy of the HJ Andrews Experimental Forest, 2011-2019

  • Creator(s): Sarah J. K. Frey, Julia A. Jones
  • PI(s): Julia A. Jones
  • Originator(s): Sarah J. K. Frey
  • Other researcher(s): Mark D Schulze, Adam Scott Hadley, Matthew G Betts, Adam M Kennedy
  • Dates of data collection: Jul 1 2011 - Jun 30 2019
  • Data collection status: Study continues and further data collection is planned
  • Data access: Restricted: proprietary (publication issues)
  • DOI:
  • Access constraint: Data from years 2018 and 2019 are restricted due to publication in process. Data can be obtained from Sarah Frey.
  • Last update: Feb 18 2020 (Version 2)
<Citation>     <Acknowledgement>     <Disclaimer>    
Frey, S.; Jones, J. 2020. Vertical tree air temperature measurements within the canopy of the HJ Andrews Experimental Forest, 2011-2019. Long-Term Ecological Research. Forest Science Data Bank, Corvallis, OR. [Database]. Available: Accessed 2023-03-23.
Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 2025755), US Forest Service Pacific Northwest Research Station, and Oregon State University.
While substantial efforts are made to ensure the accuracy of data and documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is". The Andrews LTER shall not be liable for damages resulting from any use or misinterpretation of data sets.
Vertical air temperature from 11 trees in the Andrews Forest has been collecting beginning in 2011. The trees are at a variety of elevations and are of various species and ages. The 11 trees were selected form the H.J Andrews phenology study air temperature network (MS045). This study examines air temperatures at multiple heights in each tree. The first sensor is at 1.5 m and subsequent sensors measure every 5 m up the tree. Each sensor includes a light (illumination) sensor, which can be used to assess the value of the data. This is not a measurement of the actual light conditions.

Study Description Study Site Map Download Study Location Information: (CSV)
Ecological Metadata Language: (EML)
1Fine temporal resolution air temperature and light intensity data (Jul 11 2011 - Jun 30 2019)METADATADATA

 HOBO workflow - Includes PDF files that describe the steps from field deployment through the production of raw data, which is input into the Python code, instructions to offload data from the shuttle, and download data from the logger with the shuttle.
 Python workflow for vertical tree data - Includes instructions on how to run the Python code for vertical tree data, including yaml and wheel files, which can be adjusted by the user to change the flagging of the data, and the definition of flags used in the Python QAQC file.
 Vertical tree HOBO information - Information on each site with an instrumented tree (includes coordinates, elevation, number of loggers, height of highest logger, tree species and dbh)
 Sunrise-sunset table - Table by day of year for sunrise and sunset times in Pacific Daylight Time
 hja_hobo_clean Python program - The repository that hosts the code needed to process, flag and clean HOBO-collected data records from the H.J. Andrews Experimental Forest.

 Air temperature at core phenology sites and additional bird monitoring sites in the Andrews Experimental Forest, 2009-2018 (MS045)
 Cold air drainage transect studies at the Andrews Experimental Forest, 2002 to Present (MS036)