California's methane super-emitters
Duren, R.M., et al.
Nature
Urban Farm DB summary
Using an airborne imaging spectrometer to survey more than 272,000 infrastructure elements, this study measured methane point-source emissions across California. Net methane point-source emissions were estimated at 0.618 teragrams per year (95% CI 0.523-0.725), equivalent to 34-46% of the state's total methane inventory. Ten percent of point sources contributed roughly 60% of point-source emissions, with landfills accounting for 41% of point-source emissions, dairies 26%, and oil and gas 26%.
Extracted facts
5 factsOnly numbers and their conditions are stored, as structured data — never the source's own sentences. Metric and condition names stay in English, as coded.
- 0.618 teragrams_per_year
net point source emissions(methane point sources)
Climate- region
- US-CA
- ci 95
- 0.523-0.725
- years
- 2016-2018
- 34–46 %
share of state methane inventory(methane point sources)
Climate- region
- US-CA
- year
- 2016
- 41 %
share of point source methane emissions(landfill)
Climate- region
- US-CA
- years
- 2016-2018
- 26 %
share of point source methane emissions(dairy)
Climate- region
- US-CA
- years
- 2016-2018
- 60 %
top 10pct share of point source emissions(methane point sources)
Climate- region
- US-CA
- note
- approximate, 'roughly 60 percent'
Direction of conclusions
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- Carbon / GHGSupportsWith caveats
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