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US EPA, Newport, OR LI-COR PAR sensor and OSU dock YSI data sonde dataset from the Pacific Coastal Ecology Branch
Citation:
Mochon Collura, T Chris AND Cheryl A. Brown. US EPA, Newport, OR LI-COR PAR sensor and OSU dock YSI data sonde dataset from the Pacific Coastal Ecology Branch. U.S. Environmental Protection Agency, Washington, DC, 2019.
Impact/Purpose:
Providing photosynthetically active radiation (PAR) and multiparameter water quality data to researcher at Oregon State University. The EPA data are very helpful to their research studies of Dulse and other seaweeds. By assisting university partners, EPA promotes collaboration and relationship with academia.
Description:
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: 4941424.908 North, 417278.744 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., “190708” represents a data file ending on 8 July 2019. Data from each file are plotted 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. The maximum expected value was not exceeded during the time period requested: 3 June to 8 November 2019. Sensors are factory calibrated every two years as recommended by the manufacturer. A Yellow Springs Inc. (YSI) datasonde model number 6600 V2-4 was deployed off the OSU pumphouse dock at the following UTM coordinates: 4941737.6 North, 417258.8 East (Zone: 10 North). Temperature, salinity, pH and depth data were collected from 30 May to 4 October 2019 by the US EPA. The YSI sondes were replaced approximately monthly with newly calibrated instruments (calibrated following standard operating procedures) and were deployed at a fixed depth off the bottom. Upon retrieval, the YSI instrument was returned to the laboratory where its performance was checked. When the instrument was serviced in the field, an independent meter was used to collect independent readings for verification. The calibration and post-calibration data have been reviewed, and bad readings identified (e.g., when instrument out of the water during transport to and from field site). However, these data were collected using automated instrumentation and other bad readings may be present (esp due to biofouling).