DOI: 10.25919/5f880ea67ca96
title: CCS - CCS8 Mooring data November 2019 deployment -fCO2-

description: 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 various 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. --o-- Description: rements are made with a Battelle Seaology pCO2 monitoring system (MApCO2), a Seabird Seaphox (for dissolved oxygen, pH, Seawater Temperature and Salinity), mounted on a surface buoy similar to the system described in Sutton et al. (2014). The seawater sensor intakes for the MapCO2 and Seaphox are located at about 1m water depth. The CO2 measurement uses a bubble equilibrator (Sutton et al., 2014), where the air from the equilibrator headspace is circulated through a LI-COR 820 non-dispersive infrared detector (NDIR) for measurement of CO2. The system carries out an automated measurement sequence every 2 hours and starts on the even UTC hour, which is the sample time that is recorded. Relevant component details: make, model, serial number, firmware version, settings: Sensor | Make | Model | Serial Number | Calibration fCO2 sensor | Battelle | MApCO2 | 191 | Pre and post deployment calibration; Continuous (see below). pH, DO,T and S sensor | Seabird Seaphox | SeaFET | 1002 |2019-04, factory calibrated pH, DO,T and S sensor | Seabird Seaphox | SBE-37-SMP-ODO | 15567 | 2019-04, factory calibrated pH, DO,T and S sensor | Seabird Seaphox | SBE-63 | 1683 | 2019-04, factory calibrated Calibration Information (if applicable) Battelle: 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. Seaphox: 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 netcdf files is flagged questionable for the pre-deployment calibrated data due to possible calibration changes which can occur after deployment Location: 38.2564S 147.3372E