Still too hot

时间:2019-03-06 03:07:11166网络整理admin

HIGHER temperatures will slow the increase in levels of the greenhouse gases methane and ozone, suggests a model created by Britain’s Meteorological Office. Unfortunately, this will only slightly decrease the global warming expected over the next century, says David Stevenson, now at Edinburgh University. Warming will add more water vapour to the air, accelerating the reaction that destroys ozone in the lower atmosphere—where it is harmful—and producing more hydroxyl (OH) radicals, which react with methane. Rising temperatures will also increase the rates of methane-destroying reactions ( Geophysical Research Letters, vol 27, p 2073). “We’re just on the start of the road of understanding how it all interacts,