An increase in methane emissions from tropical Africa between 2010 and 2016 inferred from satellite data
@article{Lunt2019AnII, title={An increase in methane emissions from tropical Africa between 2010 and 2016 inferred from satellite data}, author={Mark F. Lunt and Paul I. Palmer and Liang Feng and Christopher M. Taylor and Hartmut Boesch and Robert J. Parker}, journal={Atmospheric Chemistry and Physics}, year={2019} }
Abstract. Emissions of methane (CH4) from tropical ecosystems, and how they
respond to changes in climate, represent one of the biggest
uncertainties associated with the global CH4 budget. Historically,
this has been due to the dearth of pan-tropical in situ measurements,
which is particularly acute in Africa. By virtue of their superior
spatial coverage, satellite observations of atmospheric CH4
columns can help to narrow down some of the uncertainties in the
tropical CH4 emission budget. We…
52 Citations
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References
SHOWING 1-10 OF 100 REFERENCES
Atmospheric observations show accurate reporting and little growth in India’s methane emissions
- Environmental ScienceNature Communications
- 2017
Growth has been overestimated in India but likely due to ruminant and waste sectors, in contrast to another major economy, China, which has shown significant growth in recent years due to increasing fossil fuel emissions.
Three decades of global methane sources and sinks
- Environmental Science
- 2013
Methane is an important greenhouse gas, responsible for about 20% of the warming induced by long-lived greenhouse gases since pre-industrial times. By reacting with hydroxyl radicals, methane reduces…
Global distribution of methane emissions, emission trends, and OH concentrations and trends inferred from an inversion of GOSAT satellite data for 2010–2015
- Environmental ScienceAtmospheric Chemistry and Physics
- 2019
Abstract. We use 2010–2015 observations of atmospheric methane columns from
the GOSAT satellite instrument in a global inverse analysis to improve
estimates of methane emissions and their trends over…
Global distribution of methane emissions, emission trends, and OH concentrations and trends inferred from an inversion of GOSAT satellite data for 2010–2015
- Environmental Science
- 2019
Abstract. We use 2010–2015 observations of atmospheric methane columns from the GOSAT satellite instrument in a global inverse analysis to improve estimates of methane emissions and their trends over…
Variability and quasi-decadal changes in the methane budget over the period 2000–2012
- Environmental ScienceAtmospheric Chemistry and Physics
- 2017
Abstract. Following the recent Global Carbon Project (GCP) synthesis of the decadal methane (CH4) budget over 2000–2012 (Saunois et al., 2016), we analyse here the same dataset with a focus on…
Estimating regional methane surface fluxes: the relative importance of surface and GOSAT mole fraction measurements
- Environmental Science
- 2012
We use an ensemble Kalman filter (EnKF), to- gether with the GEOS-Chem chemistry transport model, to estimate regional monthly methane (CH4) fluxes for the pe- riod June 2009-December 2010 using…
Large-Scale Controls of Methanogenesis Inferred from Methane and Gravity Spaceborne Data
- Environmental ScienceScience
- 2010
A combination of satellite data, which indicate water table depth and surface temperature, and atmospheric methane concentrations are used to determine the location and strength of methane emissions from wetlands, the largest natural global source, and tropical and higher-latitude CH4 variations are largely described by Γ and TS variations, respectively.
Estimating global and North American methane emissions with high spatial resolution using GOSAT satellite data
- Environmental Science
- 2015
Abstract. We use 2009–2011 space-borne methane observations from the Greenhouse Gases Observing SATellite (GOSAT) to estimate global and North American methane emissions with 4° × 5° and up to 50 km…
Attribution of recent increases in atmospheric methane through 3-D inverse modelling
- Environmental ScienceAtmospheric Chemistry and Physics
- 2018
Abstract. The
atmospheric methane (CH4) growth rate has varied considerably in
recent decades. Unexplained renewed growth after 2006 followed 7 years of
stagnation and coincided with an isotopic…
Variability in Atmospheric Methane From Fossil Fuel and Microbial Sources Over the Last Three Decades
- Environmental ScienceGeophysical Research Letters
- 2018
Atmospheric measurements show an increase in CH4 from the 1980s to 1998 followed by a period of near‐zero growth until 2007. However, from 2007, CH4 has increased again. Understanding the variability…