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Western Regional Breakout

Western Regional Breakout. Goal: Regional C budgets for natural and managed lands and anthropogenic emissions Forests dominant in north while agriculture and fossil fuel CO 2 emissions dominant in South Hypotheses: Forest source/sinks vary with disturbance a major factor

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Western Regional Breakout

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  1. Western Regional Breakout Goal: Regional C budgets for natural and managed lands and anthropogenic emissions Forests dominant in north while agriculture and fossil fuel CO2 emissions dominant in South Hypotheses: Forest source/sinks vary with disturbance a major factor Pasture/range largely neutral but climate sensitive Agricultural activities dominated by large carbon exports, uncertain C storage, non-CO2 gases

  2. Current activities: • Bottom up: • Evaluation of model uncertainty in forest carbon exchange • NASA-CASA, BIOM-BGC, MC1, CLM-CN • Summation of comparison of fossil fuel CO2 estimates (VULCAN, CARB, EIA) • Evaluation of Forest Disturbance • TM-based through 1985-2007 (Bob Kennedy) • BIOMBGC - MTBS (USGS) -fire, cutting • Inclusion of state inventories for non-CO2 gases • Top-down: • Tower data limited before 2006: Trinidad, Scripps • ORCA (2006), CALGEM (2007) • non-CO2 synthesis project and state efforts

  3. Future (unfunded) Topics • ffCO2 uncertainty: 14CO2 measurements • Evaluation of river discharge to costal zone (%? NPP) • Pest specific disturbance studies (Pine beetle) • Prediction ? (thinning, fire frequency) • Agriculture diagnosis • Carbon export in crops, residue management • Non-CO2 gas focus (N2O: N-addition CH4:livestock) • Suggestion: Leverage state-funded activities • California AB-32 mandated GHG reductions require verification

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