"Major U.S. cities may be leaking far more methane into the atmosphere than government estimates suggest.
New measurements found that up to twice as much gas is being released from six cities on the East Coast — Washington, D.C.; Philadelphia; Boston; New York; Providence, R.I.; and Baltimore — than estimates recorded by EPA.
Their combined methane emissions are higher than those at some of the nation's biggest natural gas production centers, including the Four Corners region and the Bakken Shale in the Dakotas.
'For context, it's quite a bit of methane for a small number of cities to be emitting,' study co-author Eric Kort, a climate scientist at the University of Michigan, said in an interview with E&E News. 'Does it drive the global budget? No. But is it an important component that potentially drives mitigation opportunities and is potentially important to consider when we consider the footprint of natural gas? Certainly.'"
