There's a lot more methane in LA's atmosphere than we thought |

Megacities observing system for Los Angeles. In-situ sensors located around the LA basin provide continuous, high accuracy measurements of greenhouse gas (GHG) mixing ratios of CO2, CH4, and CO. A remote-sensing instrument on Mt. Wilson provides multiple scans per day of the basin to measure slant-column mixing ratios. Another remote-sensing instrument at Caltech provides continuous daytime measurements of column mixing ratios. Aircraft and mobile laboratories provide infrequent but intensive measurements of mixing ratios. Satellites are beginning to provide remote-sensing measurements of LA. Other instruments (not shown) measure winds and boundary layer height.
Los Angeles' annual emissions of methane, a greenhouse gas, are 18 to 61 percent higher than common estimates. Read the rest
http://feeds.boingboing.net/~r/boingboing/iBag/~3/APeFamnxDFA/theres-a-lot-more-methane-in.html
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