Methane Levels - The Update
Atmospheric levels of methane, the greenhouse gas which is much more powerful than carbon dioxide, have risen significantly for the last three years running, scientists will disclose today – leading to fears that a major global-warming "feedback" is beginning to kick in...
Now comes the first news that levels of methane in the atmosphere, which began rising in 2007 when an unprecedented heatwave in the Arctic caused a record shrinking of the sea ice, have continued to rise significantly through 2008 and 2009.
The new figures will be revealed this morning at a major two-day conference on greenhouse gases in the atmosphere...the two scientists will reveal that, after a decade of near-zero growth, "globally averaged atmospheric methane increased by [approximately] 7ppb (parts per billion) per year during 2007 and 2008."
They go on: "During the first half of 2009, globally averaged atmospheric CH4 was [approximately] 7ppb greater than it was in 2008, suggesting that the increase will continue in 2009.
Huh? Let's look out the window, yes, we are in 2010. So why are they hypothesising about what may happen in the latter half of 2009? Have they broken their measuring flask?
Luckily the guys at Mauna Loa still have theirs.
Now you have the latest data let us discuss if the levels are "running away".