MCRLdata Sensor Details

This page provides detailed information about the deployed sensors, including a timeline of data availability. Most of this information is embedded in metadata fields on the standardized NetCDF files provided with longer dataset requests. The following chart shows timelines for deployments with gaps when data collection was interrupted more than two weeks:

Water Dynamics

Tide Gauge - Nile YSI Micropilot FMR51

• Location: PNNL-Sequim Pier Railing
• Parameters:
• Water Surface Level (m, NAVD88); Accuracy = ±2 mm
• Sapling Rate: 5-minute average every 5 minutes
• Start of Dataset: 4 March 2021
• Sensors:
• Serial Number: P9000615134, Calibrated: 4 March 2021
• Quality Controls:
• Water Surface Level: Flag 1 = Missing value, Flag 2 = value below -2 m, Flag 4 = value above 5 m
• Weekly despiking algorithm and smoothing (only on NetCDF files)

ADCP - Nortek 400kHz 2D Horizontal Profiler

• Location: PNNL-Sequim Pier Pile, pointed across channel, 98 m range (1.47m above the seafloor)
• Parameters:
• Water Velocity (m/s) at 1-8m bin size; Accuracy = ±1% of measured value ±0.5 cm/s
• Additional parameters: internal pressure, internal temperature, depth, pitch, roll, heading, amplitude
• Sapling Rate: 5-minute average every 15 minutes
• Start of Dataset: 8 September 2021
• Sensors:
• Serial Number: WHV7496, Calibrated: 1 February 2021
• Serial Number: WHV8445, Calibrated: 8 February 2023
• Quality Controls:
• Water Velocity: Flag 1 = Missing value, Flag 2 = value below -5 m/s, Flag 4 = value above 5 m/s
• Weekly smoothing (only on NetCDF files)
• Verify pitch/roll never exceeds 0.5° and heading never exceeds 2°; verify internal temperature correlates with CTD; verify depth correlates with tide gauge

Hydrophone - Ocean Sonics icListen RB9-ETH

• Location: PNNL-Sequim Pier Pile (1.2m above the seafloor)
• Parameters:
• Frequency spectra (dB) (Range: 10 Hz- 200 kHz); Resolution = -178 dB re 1 V/µPa
• Additional parameters: internal humidity, internal temperature
• Sapling Rate: 5-minute average every 15 minutes
• Start of Dataset: 8 September 2021
• Sensors:
• Serial Number: 6660; Calibrated: 10 September 2024
• Serial Number: 6661; Calibrated: 10 September 2024
• Past Sensor: Ocean Sonics icListen SC2-ETH-X2 (SN: 1856)
• Quality Controls:
• Sound Pressure Level: Flag 1 = Missing value, Flag 2 = value below 50 dB re 1µPa, Flag 4 = value above 150 dB re 1µPa

Water Quality

CTD - Seabird SBE 37-SMP-ODO MicroCAT

• Location: PNNL-Sequim Floating Dock Cage (~41" below surface)
• Parameters:
• Conductivity (mS/cm) -> Salinity (ppt); Accuracy = ±0.0003 mS/cm (0.0003 mS/cm monthly drift); Resolution = 0.0001 mS/cm
• Temperature (°C); Accuracy = ±0.002°C (0.0002°C monthly drift); Resolution = 0.0001°C
• Dissolved Oxygen (mg/L); Accuracy = ±0.1 mg/L (0.07 mg/L drift per 100,000 samples); Resolution = 0.007 mg/L
• Sapling Rate: One sample every 5 minutes
• Start of Dataset: 5 August 2021
• Sensors:
• Serial Number: 13897; Calibrated: 8 Febraury 2023, 2 July 2019
• Serial Number: 26094; Calibrated: 26 July 2023
• Quality Controls:
• Salinity: Flag 1 = Missing value, Flag 2 = value below 25 ppt, Flag 4 = value above 35 ppt
• Temperature: Flag 1 = Missing value, Flag 2 = value below 0°C, Flag 4 = value above 25°C
• Dissolved oxygen: Flag 1 = Missing value, Flag 2 = value below 0 mg/L, Flag 4 = value above 20 mg/L
• Verify temperature correlates with ADCP

Fluorometer - Seabird ECO Triplet

• Location: PNNL-Sequim Floating Dock Cage (~36" below surface)
• Parameters:
• Colored Dissolved Organic Matter - CDOM (ppb); Sensitivity = 0.184 ppb
• Chlorophyll (µg/L); Sensitivity = 0.015 µg/L
• Phycoerythrin (ppb); Sensitivity = 0.086 ppb
• Sapling Rate: One sample every 5 minutes
• Start of Dataset: 5 August 2021
• Sensors:
• Serial Number: 5194, Calibrated: 19 September 2018
• Serial Number: 8459, Calibrated: 26 July 2023
• Quality Controls:
• CDOM: Flag 1 = Missing value, Flag 2 = value below 0 ppb, Flag 4 = value above 150 ppb
• Chlorophyll: Flag 1 = Missing value, Flag 2 = value below 0 µg/L, Flag 4 = value above 100 µg/L
• Phycoerythrin: Flag 1 = Missing value, Flag 2 = value below 0 ppb, Flag 4 = value above 100 ppb
• Verify temperature correlates with ADCP

pH - iSAMI-pH

• Location: PNNL-Sequim Floating Dock Cage (~30" below surface)
• Parameters:
• pH; Sensitivity = 0.184 ppb
• Temperature (°C); Accuracy = 0.1°C; Resolution = ±0.01°C
• Sapling Rate: One sample every 15 minutes
• Start of Dataset: 21 September 2023
• Sensors:
• Serial Number: IS0090P, Calibrated: 27 March 2023
• Serial Number: IS0091P, Calibrated: 27 March 2023
• Quality Controls:
• pH: Flag 1 = Missing value, Flag 2 = value below 0, Flag 4 = value above 14
• Temperature: Flag 1 = Missing value, Flag 2 = value below 0°C, Flag 4 = value above 30°C

pCO2 - Battelle Seaology/PMEL MAPCO2 pCO2 Monitor

• Location: PNNL-Sequim Floating Dock
• Parameters:
• Partial Pressure of Carbon Dioxide in water (ppm); Sensitivity = ~1 ppm
• Partial Pressure of Carbon Dioxide in air (ppm); Sensitivity = ~2 ppm
• Oxygen in water (%); Sensitivity = xxx
• Oxygen in air (%); Sensitivity = xxx
• Additional parameters: air pressure, relative humidity, temperature
• Sapling Rate: One sample every 3 hours
• Start of Dataset: 15 August 2023
• Sensors:
• Serial Number: 0205, Calibrated: 17 March 2023
• Quality Controls:
• CO2 in Water: Flag 1 = Missing value, Flag 2 = value below 0 ppm, Flag 4 = value above 10,000 ppm
• CO2 in Air: Flag 1 = Missing value, Flag 2 = value below 0 ppm, Flag 4 = value above 10,000 ppm
• O2 in Water: Flag 1 = Missing value, Flag 2 = value below 0%, Flag 4 = value above 100%
• O2 in Air: Flag 1 = Missing value, Flag 2 = value below 0%, Flag 4 = value above 100%
• CO2 in Air compared with Atmospheric CO2 sensor

Underwater Photosythetically Active Radiation (PAR) - Li-COR LI-193 Spherical Underwater Quantum

• Location: PNNL-Sequim Pier Pile, two sensors (1.75m and 2.75m above the seafloor)
• Parameters:
• Average PAR Flux Density (µmol of photons m-2 s-1); Sensitivity = ~ 7 µA per 10000 µmol s-1 m-2
• Sapling Rate: One sample every 15 minutes
• Start of Dataset: 7 April 2021
• Sensors:
• Serial Number: SPQA6520, Manufactured: 28 February 2023, Calibrated: 1 March 2023
• Serial Number: SPQA6521, Manufactured: 28 February 2023, Calibrated: 1 March 2023
• Serial Number: SPQA6113, Manufactured: 13 January 2021, Calibrated: 14 January 2021
• Serial Number: SPQA1442, Manufactured: 9 February 1993, Calibrated: 4 February 2021
• Quality Controls:
• PAR: Flag 1 = Missing value, Flag 2 = value below 0 µmol s-1 m-2, Flag 4 = value above 500 µmol s-1 m-2

Meteorology - Weather Station

Anemometer - 05108-5A R.M. Young Wind Monitor

• Location: PNNL-Sequim Pier Railing
• Parameters:
• Average Wind Speed (m/s); Accuracy = ±0.3 m/s or 1% of reading
• Wind Gust (m/s); Accuracy = ±0.3 m/s or 1% of reading
• Wind Direction (°); Accuracy = ±3°
• Sapling Rate: Average over 5 minutes of continuous sampling
• Start of Dataset: 15 September 2021
• Sensors:
• Serial Number: WM185170, Calibrated: 22 June 2021
• Quality Controls:
• Wind Speed: Flag 1 = Missing value, Flag 2 = value below 0 m/s, Flag 4 = value above 20 m/s
• Wind Gust: Flag 1 = Missing value, Flag 2 = value below 0 m/s, Flag 4 = value above 30 m/s
• Wind Direction: Flag 1 = Missing value, Flag 2 = value below 0°, Flag 4 = value above 360°

Barometer - Campbell Scientific BaroVue 10

• Location: PNNL-Sequim Pier Railing
• Parameters:
• Barometric Pressure (hPa); Accuracy = ±0.5 hPa (±0.1 hPa annual drift); Resolution = 0.1 hPa
• Sapling Rate: One sample every 5 minutes
• Start of Dataset: 15 September 2021
• Sensors:
• Serial Number: 1090, Calibrated: 20 July 2021
• Quality Controls:
• Barometric Pressure: Flag 1 = Missing value, Flag 2 = value below 800 hPa, Flag 4 = value above 1100 hPa

Temperature & Humidity Sensor - Campbell Scientific HygroVue 10

• Location: PNNL-Sequim Pier Railing
• Parameters:
• Air Temperature (°C); Accuracy = ±0.1°C (±0.03°C annual drift); Resolution = 0.001°C
• Relative Humidity (%); Accuracy = ±1.5% (±0.5% annual drift); Resolution = 0.001%
• Sapling Rate: One sample every 5 minutes
• Start of Dataset: 15 September 2021
• Sensors:
• Serial Number: E2708, Calibrated: 26 July 2021
• Quality Controls:
• Air Temperature: Flag 1 = Missing value, Flag 2 = value below -20°C, Flag 4 = value above 40°C
• Relative Humidity: Flag 1 = Missing value, Flag 2 = value below 0%, Flag 4 = value above 100%

Photosythetically Active Radiation (PAR) - Li-COR LI-190R

• Location: PNNL-Sequim Pier Railing
• Parameters:
• Average PAR Flux Density (µmol of photons m-2 s-1); Sensitivity = 5 µA to 10 µA per 1,000 µmol s-1 m-2
• PAR total flux (µmol of photons m-2); Sensitivity = 5 µA to 10 µA per 1,000 µmol s-1 m-2
• Sapling Rate: Average over 5 minutes of continuous sampling
• Start of Dataset: 15 September 2021
• Sensors:
• Serial Number: Q114244, Calibrated: 19 March 2021
• Quality Controls:
• Average PAR Flux Density: Flag 1 = Missing value, Flag 2 = value below 0 µmol m-2 s-1, Flag 4 = value above 3000 µmol m-2 s-1
• PAR total flux: Flag 1 = Missing value, Flag 2 = value below 0 µmol m-2, Flag 4 = value above 1500 µmol m-2
• Verify that PAR readings are 0 during the night

Rain Gauge - Campbell Scientific Tipping Bucket TE525

• Location: PNNL-Sequim Pier Railing
• Parameters:
• Rainfall (in); Accuracy = ±1%; Resolution = 0.01 in/tip
• Sapling Rate: Average over 5 minutes of continuous sampling
• Start of Dataset: 15 September 2021
• Sensors:
• Serial Number: xxxx, Calibrated: 3 May 2023
• Quality Controls:
• Rainfall: Flag 1 = Missing value, Flag 2 = value below 0 in, Flag 4 = value above 10 in

Atmospheric CO2 - Li-COR LI-850

• Location: PNNL-Sequim Pier Railing
• Parameters:
• Atmospheric CO2 (ppm); Accuracy = ±1.5%
• Atmospheric H20 (mmol mol-1); Accuracy = ±1.5%
• Barometric Pressure (kPa)
• Air Temperature (°C)
• Sapling Rate: One sample every 5 minutes
• Start of Dataset: 5 April 2024
• Sensors:
• Serial Number: HGA-06886, Calibrated: 2 February 2023
• Quality Controls:
• Atmospheric CO2: Flag 1 = Missing value, Flag 2 = value below 0 in, Flag 4 = value above 10 in
• Atmospheric H2O: Flag 1 = Missing value, Flag 2 = value below 0 in, Flag 4 = value above 10 in
• Barometric Pressure: Flag 1 = Missing value, Flag 2 = value below 0 in, Flag 4 = value above 10 in
• Air Temperature: Flag 1 = Missing value, Flag 2 = value below -20°C, Flag 4 = value above 60°C