In a long comments section this gem turns up: http://tamino.wordpress.com/2007/07/30/surface-stations/#comment-3701
"Figure 10., http://capita.wustl.edu/capita/CapitaReports/EmisTrends/sox10.gif There is a steep drop in sulfur emissions In North America, starting after the 1929 Crash [the purple section of that chart], which amounts to a 30-40% reduction from the peak then. It didn't recover to that peak level until ~1940. Other things being equal, one would expect that a USA-localized drop in sulfate aerosols in the mid-1930s should yield upward pressure on temperatures there." http://data.giss.nasa.gov/gistemp/graphs/Fig.D_lrg.gif Is this likely to be real? Useable for assessing the impact of sulphate aerosols on temperature? --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups Global Change ("globalchange") newsgroup. Global Change is a public, moderated venue for discussion of science, technology, economics and policy dimensions of global environmental change. Posts will be admitted to the list if and only if any moderator finds the submission to be constructive and/or interesting, on topic, and not gratuitously rude. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/globalchange -~----------~----~----~----~------~----~------~--~---
