"The number of detections of large XCH4 enhancements around the world, each associated
with an ultra-emitter, totals more than 1,800 single observed anomalies over two years
(2019-2020), a large fraction of them located over Russia, Turkmenistan, the United States
(excluding the Permian basin where regional enhancements comprise many small to medium
emitters), the Middle East and Algeria (Fig. 1). Detections vary in magnitude and number
between 50 to 150 per month, most of them corresponding to O&G production facilities (about
two thirds of the detections, or ~1,200) while ultra-emitters from coal, agriculture and waste
management only represent a relatively small fraction (33%) of the total detections (cf. SI).
Ultra-emitters attributed to O&G infrastructures appear along major pipelines and over most of
the largest O&G basins representing more than 50% of the total onshore natural gas production
over the globe (IEA, 2021). Offshore emissions remain invisible to TROPOMI, hence excluded
from our analysis (cf. Supp. Info.)."
It's amazing to me how there is not a single ultra-emitter from Europe, Australia or offshore. Surely this is evidence that regulatory regime is critically important?