Showing posts with label heat-trapping substances. Show all posts
Showing posts with label heat-trapping substances. Show all posts

Thursday, April 23, 2009

In the spirit of accuracy and settling on a common lexicon for climate discourse, I’d like to propose that a certain bit of climate shorthand go away

TO BE NOTED: From the NY Times:


April 23, 2009, 7:03 am

Ending ‘Carbon Emissions’ (the Jargon)

In the spirit of accuracy and settling on a common lexicon for climate discourse, I’d like to propose that a certain bit of climate shorthand go away. It’s the tendency to discuss the climate issue in terms of “carbon emissions.” Just doing a Google search of blogs, I found 322,963 hits for this phrase.

Here’s the problem. First, not all carbon-containing emissions exert a heat-trapping effect on the atmosphere. Carbon monoxide, or CO, for instance, is not a significant greenhouse gas.

Second, and most important, not all greenhouse gases contain carbon! This is true even within the basket of six substances formally included under the 1992 Framework Convention on Climate Change and the 1997 Kyoto Protocol (and whatever addendum to those treaties emerges in months to come). Nitrous oxide and sulfur hexafluoride contain no carbon, yet emissions — measured by estimating how much carbon dioxide would exert the same climate effect — count in countries hitting or missing targets and the like.

It’s a small point. But clarity is important in this arena, where smoke and mirrors are so abundant. Can we start talking about “greenhouse gases,” or “heat-trapping substances” if including black carbon, which of course isn’t a gas?

What do you think? For a chuckle, here’s a very different use of sulfur hexafluoride, illustrated by those inventive investigators at Mythbusters: