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Carbon Dioxide Monitoring Update

Carbon Dioxide Monitoring Update. Dustin Goto Monitoring and Laboratory Division California Air Resources Board AMTAC April 12, 2011. Recap.

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Carbon Dioxide Monitoring Update

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  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

  5. 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.

  6. Questions

  7. Contact Information • Dustin Goto dgoto@arb.ca.gov (916) 327-4757

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