Satellite observations of atmospheric methane and their value for quantifying methane emissions
Daniel J. Jacob,Alexander J. Turner,Joannes D. Maasakkers,Jian-Xiong Sheng,Kang Sun,Xiong Liu,Kelly Chance,Ilse Aben,Jason McKeever,Christian Frankenberg +9 more
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In this paper, the authors review the value of current, future, and proposed satellite observations to better quantify and understand methane emissions through inverse analyses, from the global scale down to the scale of point sources and in combination with suborbital (surface and aircraft) data.Abstract:
. Methane is a greenhouse gas emitted by a range of natural and anthropogenic sources. Atmospheric methane has been measured continuously from space since 2003, and new instruments are planned for launch in the near future that will greatly expand the capabilities of space-based observations. We review the value of current, future, and proposed satellite observations to better quantify and understand methane emissions through inverse analyses, from the global scale down to the scale of point sources and in combination with suborbital (surface and aircraft) data. Current global observations from Greenhouse Gases Observing Satellite (GOSAT) are of high quality but have sparse spatial coverage. They can quantify methane emissions on a regional scale (100–1000 km) through multiyear averaging. The Tropospheric Monitoring Instrument (TROPOMI), to be launched in 2017, is expected to quantify daily emissions on the regional scale and will also effectively detect large point sources. A different observing strategy by GHGSat (launched in June 2016) is to target limited viewing domains with very fine pixel resolution in order to detect a wide range of methane point sources. Geostationary observation of methane, still in the proposal stage, will have the unique capability of mapping source regions with high resolution, detecting transient "super-emitter" point sources and resolving diurnal variation of emissions from sources such as wetlands and manure. Exploiting these rapidly expanding satellite measurement capabilities to quantify methane emissions requires a parallel effort to construct high-quality spatially and sectorally resolved emission inventories. Partnership between top-down inverse analyses of atmospheric data and bottom-up construction of emission inventories is crucial to better understanding methane emission processes and subsequently informing climate policy.read more
Citations
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TL;DR: In this paper, the authors present a new data set of annual historical (1750-2014) anthropogenic chemically reactive gases (CO, CH4, NH3, NOx, SO2, NMVOCs), carbonaceous aerosols (black carbon BC, and organic carbon OC), and CO2 developed with the Community Emissions Data System (CEDS).
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TROPOMI on the ESA Sentinel-5 Precursor: A GMES mission for global observations of the atmospheric composition for climate, air quality and ozone layer applications
J.P. Veefkind,J.P. Veefkind,Ilse Aben,K McMullan,H Forster,J. de Vries,Gerard Otter,J. Claas,Henk Eskes,J. F. de Haan,Quintus Kleipool,M. van Weele,Otto Hasekamp,Ruud W. M. Hoogeveen,Jochen Landgraf,Ralph Snel,Paul J. J. Tol,P. Ingmann,Robert Voors,Bob Kruizinga,Rob Vink,HC Visser,Pieternel F. Levelt,Pieternel F. Levelt +23 more
TL;DR: The European Space Agency's Sentinel-5 Precursor (S-5 P) is a low Earth orbit polar satellite to provide information and services on air quality, climate and the ozone layer in the timeframe 2015-2022 as discussed by the authors.
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