[asa] Pictures of a Warming Planet

Sometimes a picture is worth a thousand words. The question is whether there
is global warming and whether anthropogenic greenhouse gases caused it. The
temperature trend by itself doesn't answer the question. But, there is also
a trend for higher nighttime lows and lower stratospheric temperatures (with
two spikes for volcanic eruptions). Both of these trends speak against solar
forcing as a cause. The fact that CO2 went way up in the same time frames
also speaks volumes. See the graphs for yourself here:

http://www.nytimes.com/imagepages/2007/01/13/weekinreview/20070114_BASICS_GRAPHIC.html

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Received on Mon Jan 15 18:19:57 2007