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Discussion papers
https://doi.org/10.5194/essd-2019-127
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-2019-127
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: data description paper 17 Sep 2019

Submitted as: data description paper | 17 Sep 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Earth System Science Data (ESSD).

A global gridded (0.1° × 0.1°) inventory of methane emissions from oil, gas, and coal exploitation based on national reports to the United Nations Framework Convention on Climate Change

Tia R. Scarpelli1, Daniel J. Jacob1, Joannes D. Maasakkers1, Melissa P. Sulprizio1, Jian-Xiong Sheng1, Kelly Rose2, Lucy Romeo2, John R. Worden3, and Greet Janssens-Maenhout4 Tia R. Scarpelli et al.
  • 1Harvard University, Cambridge, MA 02138, USA
  • 2U.S. Department of Energy, National Energy Technology Laboratory, Albany, OR 97321, USA
  • 3Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
  • 4European Commission Joint Research Centre, Ispra (Va), Italy

Abstract. Individual countries report national emissions of methane, a potent greenhouse gas, in accordance with the United Nations Framework Convention on Climate Change (UNFCCC). We present a global inventory of methane emissions from oil, gas, and coal exploitation that spatially disaggregates the national emissions reported to the UNFCCC. Our inventory is at 0.1° × 0.1° resolution and resolves the subsectors of oil and gas exploitation, from upstream to downstream, and the different emission processes (leakage, venting, flaring). Global emissions for 2016 are 41.5 Tg a−1 for oil, 24.4 Tg a−1 for gas, and 31.3 Tg a−1 for coal. An array of databases is used to spatially allocate national emissions to infrastructure including wells, pipelines, oil refineries, gas processing plants, gas compressor stations, gas storage facilities, and coal mines. Gridded error estimates are provided in normal and lognormal forms based on emission factor uncertainties from the IPCC. Our inventory shows large differences with the EDGAR v4.3.2 global gridded inventory both at the national scale and in finer-scale spatial allocation. Use of our inventory as prior estimate in inverse analyses of atmospheric methane observations allows investigation of individual subsector contributions and can serve policy needs by evaluating the national emissions totals reported to the UNFCCC. Gridded data sets can be accessed at https://doi.org/10.7910/DVN/HH4EUM.

Tia R. Scarpelli et al.
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Data sets

Global Inventory of Methane Emissions from Fuel Exploitation T. R. Scarpelli, D. J. Jacob, J. D. Maasakkers, M. P. Sulprizio, J.-X. Sheng, K. Rose, L. Romeo, J. R. Worden, and G. Janssens-Maenhout https://doi.org/10.7910/DVN/HH4EUM

Tia R. Scarpelli et al.
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Short summary
Methane, a potent greenhouse gas, is emitted through the exploitation of oil, gas, and coal resources, and many efforts to reduce emissions have targeted these sources. We have created a global inventory of oil, gas, and coal methane emissions based on country reporting to the United Nations. The inventory can be used along with satellite observations of methane to better understand the contribution of these sources to global emissions and to identify potential biases in emissions reporting.
Methane, a potent greenhouse gas, is emitted through the exploitation of oil, gas, and coal...
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