Sentences with phrase «methane in the atmosphere above»

Another EDF - funded study is also underway in Boston, where Harvard University professor Steven Wofsy and others are working to use measurements of methane in the atmosphere above the city to determine how much of the gas is being released.

Not exact matches

With an increase in pressure, water and carbon dioxide remain stable, but at pressures above 93 gigapascals (0.93 million atmospheres) methane begins to decompose forming heavy hydrocarbons — ethane, butane, and polyethylene.

Duren is involved with the Los Angeles Megacities Carbon Project, a major effort of NASA, the National Oceanic and Atmospheric Administration, and the National Institute of Standards and Technology to thoroughly measure methane and other greenhouse gases in the atmosphere above major urban centers.

Their findings, published March 9 in Proceedings of the National Academy of Sciences, show that groundwater from the seasonal thawing of the «active layer» of soil above the permafrost adds significantly to the overall concentration of methane in the lake and thus influences the emission of this powerful greenhouse gas to the atmosphere.

The process is thought to begin in the high atmosphere, at altitudes above 400 kilometers (250 miles), where ultraviolet light breaks down methane and nitrogen molecules.

What is concerning is the possibility that rapid global warming could occur faster than many people believe is possible, if global warming due to atmospheric carbon dioxide causes the Earth's atmosphere to warm enough to release enormous deposits of frozen methane (CH4) that are stored in the permafrost above the Arctic Circle and in frozen methane ice, known as methane hydrate, underneath the floors of the oceans throughout the world (see: How Methane Gas Releases Due To Global Warming Could Cause Human Extinmethane (CH4) that are stored in the permafrost above the Arctic Circle and in frozen methane ice, known as methane hydrate, underneath the floors of the oceans throughout the world (see: How Methane Gas Releases Due To Global Warming Could Cause Human Extinmethane ice, known as methane hydrate, underneath the floors of the oceans throughout the world (see: How Methane Gas Releases Due To Global Warming Could Cause Human Extinmethane hydrate, underneath the floors of the oceans throughout the world (see: How Methane Gas Releases Due To Global Warming Could Cause Human ExtinMethane Gas Releases Due To Global Warming Could Cause Human Extinction).

Water vapour, carbon dioxide, methane and nitrous oxide — the so - called greenhouse gases (GHGs) in the Earth's atmosphere - create a natural «greenhouse effect» by «trapping» heat between the Earth's surface and the Troposphere (the atmospheric layer 5 to 10 miles above the surface).