methane_map_barkley

methane_map_barkley

map of north central PA with methane emissions charted

Results of methane testing along state roads in north-central Pennsylvania on July 18, 2014. The taller and more red the bars, the higher the methane concentration measured by researchers. The very high levels at far right were recorded near a natural gas compressor station. Fuzzy yellow dots indicate natural gas wells.

IMAGE: Map courtesy of Google Earth; data courtesy Zach Barkley, Davis Lab