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From:Atmospheric Chemistry and Physics (Vol. 22, Issue 6) Peer-ReviewedWe present a method for estimating fossil fuel methane emissions using observations of methane and ethane, accounting for uncertainty in their emission ratio. The ethane:methane emission ratio is incorporated as a...
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From:Atmospheric Chemistry and Physics (Vol. 22, Issue 5) Peer-ReviewedTop-down greenhouse gas measurements can be used to independently assess the accuracy of bottom-up emission estimates. We report atmospheric methane (CH.sub.4) mole fractions and [delta].sup.13 CH.sub.4 measurements from...
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From:Atmospheric Chemistry and Physics (Vol. 21, Issue 21) Peer-Reviewed
Atmospheric observations consistent with reported decline in the UK's methane emissions (2013-2020).
Atmospheric measurements can be used as a tool to evaluate national greenhouse gas inventories through inverse modelling. Using 8 years of continuous methane (CH.sub.4) concentration data, this work assesses the United... -
From:Atmospheric Chemistry and Physics (Vol. 21, Issue 16) Peer-ReviewedNational greenhouse gas inventories (GHGIs) are submitted annually to the United Nations Framework Convention on Climate Change (UNFCCC). They are estimated in compliance with Intergovernmental Panel on Climate Change...
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From:Geoscientific Model Development (Vol. 9, Issue 9) Peer-ReviewedAtmospheric trace gas inversions often attempt to attribute fluxes to a high-dimensional grid using observations. To make this problem computationally feasible, and to reduce the degree of under-determination, some form...
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From:Atmospheric Chemistry and Physics (Vol. 19, Issue 15) Peer-Reviewed
We reconstruct atmospheric abundances of the potent greenhouse gas c-C.sub.4 F.sub.8 (perfluorocyclobutane, perfluorocarbon PFC-318) from measurements of in situ, archived, firn, and aircraft air samples with...
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From:Atmospheric Chemistry and Physics (Vol. 19, Issue 22) Peer-ReviewedWe present Î.sup.14 CO.sub.2 observations and related greenhouse gas measurements at a background site in Ireland (Mace Head, MHD) and a tall tower site in the east of the UK (Tacolneston, TAC) that is more strongly...
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From:Proceedings of the National Academy of Sciences of the United States (Vol. 114, Issue 21) Peer-ReviewedCitation Only
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From:Atmospheric Chemistry and Physics (Vol. 18, Issue 16) Peer-Reviewed
We describe the motivation, design, and execution of the Greenhouse gAs Uk and Global Emissions (GAUGE) project. The overarching scientific objective of GAUGE was to use atmospheric data to estimate the magnitude,...
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From:Atmospheric Chemistry and Physics (Vol. 19, Issue 15) Peer-Reviewed
Since 1850 the concentration of atmospheric methane (CH.sub.4 ), a potent greenhouse gas, has more than doubled. Recent studies suggest that emission inventories may be missing sources and underestimating emissions....
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From:Earth System Science Data (Vol. 13, Issue 5) Peer-ReviewedReliable quantification of the sources and sinks of greenhouse gases, together with trends and uncertainties, is essential to monitoring the progress in mitigating anthropogenic emissions under the Paris Agreement. This...
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From:Geoscientific Model Development (Vol. 13, Issue 4) Peer-ReviewedWe present a method to infer spatially and spatio-temporally correlated emissions of greenhouse gases from atmospheric measurements and a chemical transport model. The method allows fast computation of spatial emissions...
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From:Proceedings of the National Academy of Sciences of the United States (Vol. 110, Issue 6) Peer-ReviewedAbstract Only
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From:Atmospheric Chemistry and Physics (Vol. 19, Issue 13) Peer-Reviewed
We present a new modelling approach for assessing atmospheric emissions from a city, using an aircraft measurement sampling strategy similar to that employed by previous mass balance studies. Unlike conventional mass...
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From:Proceedings of the National Academy of Sciences of the United States (Vol. 112, Issue 19) Peer-ReviewedAbstract Only
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From:Nature (Vol. 433, Issue 7025) Peer-ReviewedAuthor(s): Stefan Reimann (corresponding author) [1]; Alistair J. Manning [2]; Peter G. Simmonds [3]; Derek M. Cunnold [4]; Ray H. J. Wang [4]; Jinlong Li [4]; Archie McCulloch [3]; Ronald G. Prinn [5]; Jin Huang [5];...
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From:Proceedings of the National Academy of Sciences of the United States (Vol. 112, Issue 45) Peer-ReviewedAbstract Only
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From:Atmospheric Chemistry and Physics (Vol. 20, Issue 12) Peer-ReviewedWe report a 40-year history of SF.sub.6 atmospheric mole fractions measured at the Advanced Global Atmospheric Gases Experiment (AGAGE) monitoring sites, combined with archived air samples, to determine emission...
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From:Atmospheric Chemistry and Physics (Vol. 17, Issue 12) Peer-ReviewedHigh methane (CH.sub.4) mixing ratios (up to 4 ppm) have occurred sporadically at our measurement site in Haddenham, Cambridgeshire, since July 2012. Isotopic measurements and back trajectories show that the...
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From:Atmospheric Chemistry and Physics (Vol. 19, Issue 5) Peer-Reviewed
Atmospheric inverse modelling has become an increasingly useful tool for evaluating emissions of greenhouse gases including methane, nitrous oxide, and synthetic gases such as hydrofluorocarbons (HFCs). Atmospheric...