U.S. EPA, Newport, OR LI-COR PAR sensor dataset from the Pacific Coastal Ecology Branch
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A LI-COR PAR sensor model number LI-190 is deployed on the US EPA Pacific Coastal Ecology Branch roof at the following UTM coordinates: 4941424.935 North, 417278.968 East (Zone: 10 North). Sensor data are recorded using a LI-COR LI-1400 data logger and are uploaded approximately every 30 to 35 days.
Data are recorded between 0300 and 2200 PST every fifteen minutes. During this time the logger reads data every fifteen seconds and integrates those readings to record at the top of each quarter-hour.
Data files are named with a two-digit Year, Month, Day format representing the last day of the deployment period e.g., “200901” represents data from 6 August 2020 to 1 September 2020. See file name in column E on year tabs.
Data from each spreadsheet are plotted together in 1) full scale to verify that daytime values are not exceeding the expected maximum values (2000 – 2200 µEinsteins (µmol photons m-2 s-1)) and 2) near zero to verify that nighttime values are very close to zero. With rare exceptions in 2016, 2017 and 2021, the maximum expected value (2200) was not exceeded and nighttime values were near zero.
Sensors were factory calibrated every two years as recommended by the manufacturer. Biennial sensor replacement may have been delayed at times due to manufacturer calibration delays. During sensor replacement, "old" and "new" (recently calibrated) sensors were deployed simultaneously, and comparison data were plotted.