[EMAIL PROTECTED] wrote:
> Michael Tobis presented a link to a presentation and summarised it as
> showing a recent decline in Chinese aerosol forcing. Without having
> read the presentation, I thought that might be due to lower sulphur
> coal or recent pollution abatement efforts. After reading the
> presentation, I think it was only based on the well known dip in
> Chinese coal use at the end of the 1990's recorded by official Chinese
> statistics, which was followed by a near unbelievable doubling within
> five years.
Coincidentally, I heard a presentation a few days ago from our
atmospheric chemistry group here on this subject. The speaker said there
were 3 sets of widely differing statistics (ranging from a large drop to
a very small one that is really more of a temporary levelling off), but
their opinion (based on modelling and observations of pollutants) seemed
to be that reality was at or beyond the upper end of this range, with no
dip at all.
I think this paper covers it:
Hajime Akimoto, Toshimasa Ohara, Jun-ichi Kurokawa, and Nobuhiro Horii,
Verification of energy consumption in China during 1996?2003 by using
satellite observational data, Atmospheric Environment, 40(40),
7663-7667, 2006.
James
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