Presentation on theme: "1 Carbon Dioxide Monitoring Update Dustin Goto Monitoring and Laboratory Division California Air Resources Board AMTAC April 12, 2011."— Presentation transcript:
1 Carbon Dioxide Monitoring Update Dustin Goto Monitoring and Laboratory Division California Air Resources Board AMTAC April 12, 2011
2 Recap The California Global Warming Solutions Act of 2006 (AB 32) requires the California Air Resources Board to report and verify the statewide greenhouse gas emissions inventory. As an initial response, we installed CO2 analyzers at our Roseville, Fresno, and Bakersfield air monitoring stations. Intended as a pilot study to get a CO2 baseline. Ended the pilot study in February 2011.
3 THERMO 410i CO2 Analyzer Uses infrared spectroscopy as principle of operation. PROS: easy to use/read interface, easily integrated into existing monitoring stations, stable CONS: nitrogen purge cylinder, need CO2 free zero air for calibrations
4 Data Mean CO2 concentrations: Roseville 424 PPM Fresno 428 PPM Bakersfield 441 PPM Mauna Loa Observatory 390 PPM
7 Where do we go from here? Finalizing data. Writing final report intended for journal publication looking at seasonal and diurnal patterns. Draft of report for peer review this summer. Evaluate a rural network away from localized sources using new technology (cavity ring- down spectroscopy) with the Picarro G1301. The Picarro analyzers measure CH4 and CO2.