Mexico emitted 'extreme' amounts of methane from gas pipeline, find scientists

Research paper reveals "extreme" methane emissions from Mexico pipeline in 2019, posing climate threat.

Mexico emitted "extreme" amounts of methane from a natural gas pipeline running through its northern border state Durango in 2019, a research paper published on December 19 showed, citing data collected from satellites.

Methane, a potent greenhouse gas that traps heat in the atmosphere and warms the planet much faster than carbondioxide in the short term, is considered a top threat to the climate.

Scientists from Harvard University, led by Marc Watine and Daniel Varon, identified a hot spot in Durango that released thousands of metric tonnes of methane over two months.

Mr. Watine said the team was able to trace the methane leaks to the El Encino-La Laguna pipeline that passes through the states of Chihuahua and Durango, transporting natural gas from the United States to Mexico.

"Our analysis shows that there were emissions from several different parts of the pipeline between April and May that year," Mr. Watine said in an interview. "Not all of it came from one location."

“On May 12, 2019, between 260 and 550 tonnes of methane were released per hour from one location, totalling 1,130 to 1,380 tonnes over three hours,” the scientists found. It was not clear what caused the emissions or which company was responsible for them.

Government documents showed the pipeline, owned by state-owned power utility CFE, is operated by Fermaca Pipeline El Encino.