[asa] Re: short question on the environment stuff

Good question. I believe that the emission controls affect mostly CO
and NOX not CO2 emissions. Car emission standards were meant to reduce
smog not necessarily the emission of greenhouse gases such as CO2.
I need to do additional research to give you the full answer though

On 1/6/07, Dawsonzhu@aol.com <Dawsonzhu@aol.com> wrote:
> Hi,
>
> It is difficult to devote the time needed on researching
> this. One question, that may have been in one of the
> reports,
>
> We have had some emission controls on cars already, so
> does that show up in any way in the data? But then, maybe
> that is overwhelmed by economic growth elsewhere. Anyway,
> I think Denver was much dirtier looking 30 years ago, and
> the last time I was there, it looked much cleaner than
> I remember it (for example). So emissions from cars (due
> to regulation which our resident troll faithfully ignores)
> probably have diminished since the early 70s. But whether
> that is detectable in tree rings etc, I don't know.
>
> Anyway, if you know something on that, or you stumble on
> it, or you've already posted it 20 times and I still have miss it,
> please post it or let me know where to find it.
>
> WD

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Received on Sat Jan 6 22:44:49 2007