uid=PIE,o=EDI,dc=edirepository,dc=org all public read MON-PR-MBYSI2018 Year 2018, 15 minute interval, water quality measurements of water column temperature, salinity, oxygen, and depth in the upper Parker River Estuary near Middle Road Bridge, Newbury, MA. Nathaniel Weston Villanova University (610) 519-8009 nathaniel.weston@villanova.edu http://nweston.org/ http://orcid.org/0000-0002-6837-360X Anne Giblin Marine Biological Laboratory (508) 289-7488 (508) 457-1548 agiblin@mbl.edu http://orcid.org/0000-0003-3851-2178 Plum Island Ecosystems LTER http://pie-lter.ecosystems.mbl.edu/ Hap Garritt (508) 289-7485 (508) 457-1548 hgarritt@mbl.edu http://orcid.org/0000-0001-5912-0769 data manager Sam Kelsey Marine Biological Laboratory 508-289-7735 skelsey@mbl.edu associated researcher Erin Vanderjeugdt 508-289-7583 evanderjeugdt@mbl.edu associated researcher 2022 English
Year 2018, water quality sonde data.15 minute readings of water column temperature, salinity, oxygen and depth in the upper Parker River Estuary near Middle Rd Bridge, Newbury, MA
dissolved oxygen organic matter Massachusetts salinity depth conductivity water temperature conductivity dataloggers PIE LTER Plum Island Ecosystems primary productivity disturbance LTER Controlled Vocabulary
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https://pie-lter.ecosystems.mbl.edu/content/year-2018-15-minute-interval-water-quality-measurements-water-column-temperature-salinity YSI water quality sonde near Middle Rd (Thurlow's Bridge) on Parker River, Byfield (Newbury) MA, moved off bridge ~100m upstream in 2014 -70.901908874512 -70.901908874512 42.758216857910 42.758216857910 2018-04-09 2018-11-09 Version 01: March 3, 2022 original upload of 2018 data and metadata. Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 28/12 8:18 PM for QA/QC to EML 2.1.0 Plum Island Ecosystems LTER http://pie-lter.ecosystems.mbl.edu/ Plum Island Ecosystems LTER http://pie-lter.ecosystems.mbl.edu/ Plum Island Ecosystems
Measurements are made using a YSI 6600 water quality datalogging sonde. YSI Sonde sensors consist of 6150 optical dissolved oxygen probe, 6560 conductivity/temperature probe (thermistor) and non-vented cable with level depth sensor (stainless steel strain gauge).   Sensors are calibrated according to the instrument manual: (https://www.ysi.com/file%20library/documents/manuals/069300-ysi-6-series...).   Missing data or blank values typically result from periods when the sonde is out of the water for maintenance or during very low tides, noted in the Comments field, or when logged values do not pass post-deployment quality control evaluations.   Raw data are screened in R for outliers using a spike detection equation following Papale et al., 2006 (https://www.biogeosciences.net/3/571/2006/), which flags differences between sequential datapoints that exceed the median difference found in the data series.  Values flagged by this screen are noted in the Comments field.   NOTES: Conductivity and Specific Conductivity The conductivity cell may short due to blockage by detrital material or fouling organisms, resulting in lower than expected conductivity.  Poor/inaccurate conductivity values cause erroneous dissolved oxygen values.   Oxygen YSI recognizes two conventions regarding calibration of the oxygen sensor: “DOsat%” and “DOsat%Local” (see Appendix J in Manual).  We calibrate to ambient pressure, as per the manual, but in addition to the YSI 6600 default parameter DOsat%, we also report output for DOsat%Local.   DOsat% represents values of % saturation of oxygen standardized to a calibration of 100% in water-saturated air at 1 ATM or 760 mmHg. DOsat%Local represents values from ODO sensor calibration in water-saturated air where 100% saturation was set relative to ambient air presure at time of calibration.  When using the Local convention, the software of the instrument “remembers” the barometric pressure input at the time of calibration for use in later calculation of the DO concentration in mg/L. Depth: Depth is depth of water above the non-vented strain gauge transducer on the sonde, with the sonde placed as near bottom as practicable: sonde depth ≠ absolute depth.   Depth is calibrated in air to ambient surface pressure before deployment.  The non-vented transducer does not account for changes in ambient atmospheric pressure during deployment.  Corrections that account for these changes may be made using 15-minute barometric pressure data from the Marshview Farm (MFM) weather station to compute correction factors at the same time intervals as the sonde time intervals: https://pie-lter.ecosystems.mbl.edu/content/year-2014-meteorological-dat... Ambient pressure changes correspond to the following water level changes, 1 mb = 0.0102 meters of water. Example: Sonde is calibrated in air at ambient pressure to the corresponding depth at pressures relative to 1 ATM   1 ATM = 760 torr = 760mmHg = 1013.25 mBar (I Torr  = 1.333224 mB).    1mB = 0.0102 meters of water If ambient air is 1014.58 mB pressure then sonde should be calibrated to 0.0134 m: Ambient pressure in mB - standard pressure in mB)  * 0.0101m/mB ,   or (1014.58 - 1013.25) * .0102 = .0134m An offset to the depth data (post collection) is then applied based on concurrent measures of barometric pressure Offset Example table is below. Ambient ATM (Torr)  Ambient ATM (mB)  Offset  meters 755  1006.58  -.0.0680 756  1007.92  -0.0544 757  1009.25  -0.0408 758  1010.58  -0.0272 759  1011.92  -0.0136 760  1013.25  0.000 761  1014.58  0.0136  
MON-PR-MBYSI2018_v1_csv Year 2018, 15 minute interval, water quality measurements of water column temperature, salinity, oxygen, and depth in the upper Parker River Estuary near Middle Road Bridge, Newbury, MA. MON-PR-MBYSI2018_v1.csv 1583869 fb584ba9ccfaad9500781b1817698bde 6b9fcca2d525940d915633da4d1ca80ad59c4bf2 1 \r\n column , https://pie-lter.ecosystems.mbl.edu/sites/default/files/data/MON-PR-MBYSI2018_v1.csv Date Date Date of sampling (YYYY-MM-DD) date YYYY-MM-DD Time Time Time of sampling (eastern standard time EST, 24 hour) date hh:mm:ss Station Station Name of sampling station string Name of sampling station Temp Temp Temperature of site water celsius real NA data not available SpCond SpCond Conductivity of site water compensated to 25oC millisiemenPerCentimeter real NA data not available Cond Cond Conductivity of site water, uncompensated for temperature millisiemenPerCentimeter real NA data not available Salinity Salinity Salinity of site water partPerThousand real NA missing DOsat% DOsat% Percent saturation of dissolved oxygen in site water, standardized to 100% at 1ATM percent real NA data not available DOsat%Local DOsat%Local Percent saturation of dissolved oxygen in site water, with calibration set relative to local atmospheric pressure percent real NA data not available DO Conc DO Conc Dissolved oxygen concentration in river water milligramPerLiter real NA data not available Depth Depth Near-bottom water column depth, uncorrected for non-vented sonde pressure transducer meter real NA data not available Comments Comments Comments about specific data string Comments about specific data 20551 MON-PR-MBYSI2018_v1_xlsx Excel metadata and data file associated with the csv data source file. Excel file after downloading is to be used for adding/editing new metadata and data. MON-PR-MBYSI2018_v1.xlsx 1643418 e17948d2cb5c97468487c2fccec7e2d7 a119e3474e971797276e66bf8d6c7bace5fcf458 application/vnd.openxmlformats-officedocument.spreadsheetml.sheet https://pie-lter.ecosystems.mbl.edu/sites/default/files/data/MON-PR-MBYSI2018_v1.xlsx document
A common unit of temperature millisiemen per centimeter, electrolytic conductivity of a solution ratio of two quantities as percent composition (1:100) milligrams / liter SI unit of length