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California Greenhouse Gas Emission Inventory Program

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Climate Change, Air Pollution
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Air Quality Planning and Science Division

CARB is responsible for preparing, adopting, and updating California’s greenhouse gas inventory under Assembly Bill 1803 (2006). The Global Warming Solutions Act of 2006 (AB 32), also tasks CARB with determining the statewide 1990 greenhouse gas (GHG) emission level and approving a statewide greenhouse gas emissions limit, equal to the 1990 level, to be achieved by 2020. CARB has developed many resources to estimate, understand, evaluate, and track greenhouse gas emissions from industrial, mobile, natural, and other sources of emissions.
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California Greenhouse Gas Emission Inventory & Trends

The California Greenhouse Gas Emissions for 2000 to 2020 – Trends of Emissions and Other Indicators report has been released, including supporting documentation, data, and the entire inventory.

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Annual Statewide GHG Inventory
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Forest & Other Land Inventory
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Wildfire Emissions

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2020 saw steepest drop in carbon pollution due to the pandemic

California’s latest Greenhouse Gas Inventory indicated that in 2020 – when many Californians stayed home due to COVID-19 – carbon pollution saw the single largest decline as a percentage of the previous year’s total in the more than 20 years the state has been tracking emissions. Greenhouse gas emissions in the state fell by 35.3 million metric tons (MMT) of carbon dioxide equivalent (CO2e). This reduction of 9% exceeds the second-largest drop the state experienced between 2008 and 2009 when GHG emissions dropped 6% during the height of the Great Recession.

News Release, October 26, 2022

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