publication . Article . 2012

Long-term decline of global atmospheric ethane concentrations and implications for methane

Isobel J. Simpson; Mads P. Sulbaek Andersen; Simone Meinardi; Lori Bruhwiler; Nicola J. Blake; Detlev Helmig; F. Sherwood Rowland; Donald R. Blake;
Open Access
  • Published: 21 Aug 2012
The longest continuous record of global atmospheric ethane levels is presented, showing that global ethane emission rates decreased by 21 per cent from 1984 to 2010, probably owing to decreased venting and flaring of natural gas in oil fields; decreased venting and flaring also account for at least 30 to 70 per cent of the decrease in methane emissions over the same period. Ethane is the most abundant non-methane hydrocarbon in the remote atmosphere and is a precursor to tropospheric ozone. This paper presents the longest continuous record of global atmospheric ethane levels assembled so far and finds that global ethane-emission rates decreased by 21% between 19...
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free text keywords: Multidisciplinary, Atmospheric sciences, Biofuel, Environmental science, Hydrocarbon, chemistry.chemical_classification, chemistry, Fossil fuel, business.industry, business, Methane, chemistry.chemical_compound, Atmospheric methane, Tropospheric ozone, Fugitive emissions, Natural gas, Environmental chemistry
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