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CCS - CCS_OA_07 Mooring data May 2018 deployment
Project Overview: A range of solutions will be required to reach globally agreed emissions reductions targets for carbon dioxide (CO2). Carbon capture and storage (CCS) is part of the suite of technologies that will contribute to lowering atmospheric emissions of CO2 from Australia's energy system. There are a wide variety of technologies at var... moreious stages of technical and commercial readiness, with more development underway for cost effective CO2 capture and storage. Our research will provide new knowledge to inform cost-efficient measurement, monitoring and verification (MMV) of the environment of CCS projects in coastal waters.
Measurements are made Seabird Seaphox (for dissolved oxygen, pH, Seawater Temperature and Salinity), mounted on a lander. The Seaphox takes a reading every hour in the UTC hour and is transmitted real time through acoustic and/or 3G modems. The Seaphox consists of a SeaFET (pH) and SBE-37-SMP-ODO CTD (SW temperature, Salinity and Dissolved Oxygen [SBE63]).
Relevant component details: make, model, serial number, firmware version, settings:
Sensor | Make | Model | Serial Number | Calibration
fCO2 sensor | Battelle | 192 | Pre and post deployment calibration; Continuous (see below).
pH | Seaphox | SeaFET | 1003 | 2017-05, factory calibrated, verified by CSIRO lab
DO | Seabird | SBE-37-SMP-ODO | 15643 | as above
T and S | Seabird | SBE-63 | 1697 | as above
Calibration Information (if applicable)
The LI-COR 820 in the Battelle pco2 sensor response is checked before and after each deployment using a range of CO2-in-air reference gases (0, 260, 370, 450 micromol/mol) at CSIRO, Hobart. The sensor measurement using factory calibrations for the LI-CO2 820 is typically within 1 micromol/mol of the reference gas value. If the LI-COR 820 measurements and the CO2-in-air reference gas values are different by more than 2 micromol/mol, a correction is applied to Li-CO2 820 output based the reference gas values. A seawater bath operated over a range of temperatures and CO2 expected in the field is then used to check the MapCO2 system (equilibrator and LI-COR 820 measurement) against a General Oceanics 8050 CO2 sensor to ensure the systems agree within 2 micromol/mol. Pressure measurements are made using the LI-COR 820 pressure sensor, checked against a Druck DPI142 pressure indicator and verified to agree within 0.5 kPa before and after each deployment.
SBE 37 (T, S, DO) and the SeaFET (pH) are calibrated by the factory and verified in the CSIRO laboratory. The pH reported in the files is flagged questionable for the pre-deployment calibrated data due to possible calibration changes which can occur after deployment
pH (calibrated) is further processed after the recovery using in situ bottle sample where available, using Total Alkalinity (TA) and Dissolved Inorganic Carbon (DIC), which will be converted to pH using CO2SYS, where the Lueker k1k2 dissociation constant is used.
Location: -38.2382, 147.4517 less
07 May 2018
11 Nov 2018
CSIRO Data Licence
Van Ooijen, Erik (2019): CCS - CCS_OA_07 Mooring data May 2018 deployment. v1. CSIRO. Data Collection.
All Rights (including copyright) CSIRO 2019.
Access to this collection's metadata and/or files (if any) are restricted until 31 Dec 2025. Although the associated metadata is public, the files (if any) have not been approved for general release. Please phone or email the contact person for this collection to discuss access to the files.
Assessment of MMV methodologies for subsea CCS: seabed and water column monitoring
host of moored sensors
Erik Van Ooijen
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