Assessing fossil fuel CO2 emissions in California using atmospheric observations and models
| Autor: | Scott J. Lehman, Timothy J. Lueker, S. J. Walker, Kevin R. Gurney, Heather Graven, Sally Newman, K. Brophy, Xinguang Cui, Ralph F. Keeling, W. Paplawsky, Hope A. Michelsen, Christopher Dale Sloop, W. Callahan, John B. Miller, Nicholas C. Parazoo, Seongeun Jeong, Ray P. Bambha, Thomas P. Guilderson, Marc Fischer, Christian Frankenberg, Brian W. LaFranchi |
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| Rok vydání: | 2018 |
| Předmět: |
010504 meteorology & atmospheric sciences
fossil fuel emissions Atmospheric model 010501 environmental sciences Atmospheric sciences 01 natural sciences California law.invention chemistry.chemical_compound Flux (metallurgy) law TRACER Meteorology & Atmospheric Sciences Radiocarbon dating atmospheric inversion 0105 earth and related environmental sciences General Environmental Science Renewable Energy Sustainability and the Environment business.industry Fossil fuel Public Health Environmental and Occupational Health carbon dioxide Fossil fuel emissions chemistry Carbon dioxide radiocarbon Environmental science business |
| Zdroj: | Environmental Research Letters, vol 13, iss 6 |
| Popis: | Analysis systems incorporating atmospheric observations could provide a powerful tool for validating fossil fuel CO_2 (ffCO_2) emissions reported for individual regions, provided that fossil fuel sources can be separated from other CO_2 sources or sinks and atmospheric transport can be accurately accounted for. We quantified ffCO_2 by measuring radiocarbon (^(14)C) in CO_2, an accurate fossil-carbon tracer, at nine observation sites in California for three months in 2014–15. There is strong agreement between the measurements and ffCO_2 simulated using a high-resolution atmospheric model and a spatiotemporally-resolved fossil fuel flux estimate. Inverse estimates of total in-state ffCO_2 emissions are consistent with the California Air Resources Board's reported ffCO_2 emissions, providing tentative validation of California's reported ffCO_2 emissions in 2014–15. Continuing this prototype analysis system could provide critical independent evaluation of reported ffCO_2 emissions and emissions reductions in California, and the system could be expanded to other, more data-poor regions. |
| Databáze: | OpenAIRE |
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