Sir, Pilita Clark (“Climate Science looks to unlikely ally”, March 17) is incorrect in arguing that President Donald Trump’s pro natural gas policies may help mitigate climate change.
Clark misses two key problems associated with natural gas policies in the Trump administration. First, methane leakage. Numerous studies (see for example the US Environmental Protection Agency’s recent inventory; the Environmental Defense Fund’s excellent studies; and the National Oceanic and Atmospheric Administration’s surprising 2014 study) and meta-analyses have found that most, and perhaps all, of the reduced carbon dioxide emissions associated with increased natural gas
use and production are offset by increased methane emissions.
The Republican leadership in Congress has weakened the Obama administration's efforts to reduce methane emissions. Congress recently invalidated critical EPA regulations that targeted a subset of upstream methane emissions. Congress is currently considering the invalidation of a US Bureau of Land Management regulation that addressed natural gas venting, flaring, and leakages on federal and tribal lands.