uid=HFR,o=lter,dc=ecoinformatics,dc=org all public read doi:10.6073/pasta/714fcf73dd3c8bcdbe976113775833bb Jim Tang https://orcid.org/0000-0003-2498-9012 Mary Heskel https://orcid.org/0000-0003-3227-2978 Researcher Zhunqiao Liu https://orcid.org/0000-0001-5902-6043 Researcher Jonathan Michelsen Researcher Hualei Yang Researcher Xi Yang Researcher 2023 English

Vegetation fluorescence, a very small amount of radiation emitted as a byproduct of photosynthesis, is a direct indicator of plant physiology. Monitoring the solar-induced plant fluorescence provides a powerful tool to understand how the plant photosynthesis responds to environmental factors such as solar radiation, temperature and precipitation as well as to stress and disturbance. We installed the ground-based fluorescence observation system to explore the Franhofer lines in the solar spectrum to monitor the canopy fluorescence. Fluorescence data could also be used to link with eddy covariance data in flux towers, the digital camera data and solar radiation data, providing a good supplementary to numerous data collected at Harvard Forest.

canopies carbon cycling fluorescence phenology photosynthesis LTER controlled vocabulary primary production LTER core area Harvard Forest HFR LTER USA HFR default

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.

Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html CC0-1.0 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf283 Prospect Hill Tract (Harvard Forest). Coordinates based on WGS84 datum. -72.185 -72.180 +42.542 +42.539 355 380 meter 2013 2014 complete Information Manager Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 hf-im@lists.fas.harvard.edu Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu

The system consists of two parts: the tower part and the ground part. The tower part consists of two fiber optics and conduits to protect the fiber. The fiber optics will be installed at 30 m height that connected to a spectraradiometer placed on the ground. The conduits (pipes) will be 0.5 inches in diameter. Each pipe will be 10 feet long and connected with connectors. The 'boom' for the fiber optics will be a PVC pipe. They face north. The pipes will be zip-tied (or use metal clamp) to attach to the tower. The ground part includes a laptop and an electric cooler, both of which will be kept in a water-proof box.

Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu https://ror.org/059cpzx98 pointOfContact The Harvard Forest Long-Term Ecological Research (LTER) program examines ecological dynamics in the New England region resulting from natural disturbances, environmental change, and human impacts. National Science Foundation LTER grants: DEB-8811764, DEB-9411975, DEB-0080592, DEB-0620443, DEB-1237491, DEB-1832210. hf283-01-sif-30.csv solar induced fluorescence data measured at Harvard Forest Barn Tower in 2013 hf283-01-sif-30.csv 211963 2075013fde3cbf7738359ce26887f86e 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p28/hf283/hf283-01-sif-30.csv datetime date and time of measurement YYYY-MM-DDThh:mm 1 minute NA missing value doy day of year in 2013 nominalDay 0.0000001 real NA missing value sif.30 solar induced fluorescence at 30 minute average milliwattPerMeterSquaredPerSteradianPerNanometer 0.000000001 real NA missing value 6240 hf283-02-canopy-sif-2014.csv solar induced fluorescence data measured at Harvard Forest Barn Tower in 2014 hf283-02-canopy-sif-2014.csv 3642 00fbc0ed0e3811606db1fb10da98baaa 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p28/hf283/hf283-02-canopy-sif-2014.csv date date of measurement YYYY-MM-DD 1 day NA missing value doy day of year in 2014 nominalDay 1 natural NA missing value canopy.sif solar induced fluorescence milliwattPerMeterSquaredPerSteradianPerNanometer 0.0001 real NA missing value 174 atmosphere long-term measurement milliwattPerMeterSquaredPerSteradianPerNanometer