Sentence examples for background level of methane from inspiring English sources

"Look at that — that's a sizable plume, about 140 parts per billion above the background level of methane," Mr. Rella said as a hillside dotted with Chevron petroleum storage tanks receded in the rearview mirror.

The new study of 11,309 drinking water wells in northeastern Pennsylvania concludes that background levels of methane in the water are unrelated to the location of hundreds of oil and gas wells that tap hydraulically fractured, or fracked, rock formations.

Its first big surprise: background levels of methane are rising over large areas of the arctic ocean.

"Based on earlier observations, we were expecting to land on Mars and measure background levels of methane of at least several parts per billion, but saw nothing," Webster told SPACE.com.

From in situ measurements made over a 20-month period by the Tunable Laser Spectrometer (TLS) of the Sample Analysis at Mars (SAM) instrument suite on Curiosity at Gale Crater, we report detection of background levels of atmospheric methane of mean value 0.69 ± 0.25 ppbv at the 95% confidence interval (CI).

Dissolved methane is not toxic, and drinking water often contains significant background levels of the gas from natural sources.

A non-smoker group provided background levels of BoE.

Background levels of genetic alterations.

The higher level of methane is not a local safety or a health issue for residents, but is a factor in overall global warming.

One military search team was sent deep into the woods today to investigate when their sensor equipment picked up a high level of methane gas.

The target level of methane productivity or better methane yield can be used as a first indicator of M&C requirements.