https://gregladen.com/blog/2013/05/11/dear-elected-official-please-note-the-400-ppm-benchmark/ Mon, 13 May 2013 05:00:38 +0000 hourly 1 https://wordpress.org/?v=6.4.6 https://gregladen.com/blog/2013/05/11/dear-elected-official-please-note-the-400-ppm-benchmark/#comment-487010 Mon, 13 May 2013 05:00:38 +0000 http://scienceblogs.com/gregladen/?p=16582#comment-487010 A benchmark is a reference point. We’ve been using the 400 ppm reference point for years. It is a perfectly good word. But for some reason a few people have complained to me about this word choice. I think maybe there are other aspects of this story that are more important, don’t you think?

]]> https://gregladen.com/blog/2013/05/11/dear-elected-official-please-note-the-400-ppm-benchmark/#comment-487009 Sun, 12 May 2013 20:34:31 +0000 http://scienceblogs.com/gregladen/?p=16582#comment-487009 “Benchmark” seems lika s strange choice of word. Do you mean “landmark”, or “milestone”?

]]> https://gregladen.com/blog/2013/05/11/dear-elected-official-please-note-the-400-ppm-benchmark/#comment-487008 Sat, 11 May 2013 22:29:48 +0000 http://scienceblogs.com/gregladen/?p=16582#comment-487008 Greg, thank you for providing the NOAA link. Yesterday, The Guardian blogger George Monbiot characterized 400 ppm of atmospheric CO2 as a monumental way station on [our doomed civilization’s] “road of idiocy.” A road he calls “the Via Dolorosa of environmental destruction” – which strikes me as an interesting metaphorical use of powerful Christian imagery:
http://www.guardian.co.uk/environment/georgemonbiot/2013/may/10/carbon-dioxide-milestone-climate-change
Thanks again,
Joe M.

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