“If you are turning the information over to decision-makers, you have to be sure.” Focusing on the Region “The important thing is to determine whether emissions are increasing or declining, and for that it’s helpful to have more than one approach,” said Yadav, whose study employs two techniques. That two studies could use different techniques to identify and quantify emissions trends is crucial for generating confidence in the conclusions drawn from methane observations, added Vineet Yadav, a JPL data scientist and lead author of the first paper. “These papers demonstrate that methane reductions are not only possible, they’re measurable through persistent monitoring,” said Andrew Thorpe, lead author of the COVID-period study and a JPL research technologist. Therefore, reducing human-caused emissions of the gas is a particularly effective way to make significant, short-term impacts on global climate change. Methane has a much shorter atmospheric lifespan than carbon dioxide – around 12 years, compared to centuries for carbon dioxide – but it absorbs much more energy while it exists in the atmosphere. A February 2023 study by JPL researchers estimated that annual methane emissions in the Los Angeles Basin fell by about 7%, or 33 million pounds (15 million kilograms), possibly due to better management of natural gas pipelines and equipment as well as improved infrastructure at a large landfill.
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