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Re: [school-discuss] a way for humans to control global warming without a behavior change ?



hello,

point taken.  i guess i'm fishing for help from someone in a classroom 
situation.  like everyone else on the list :-)

mike eschman, etc ...


On Tuesday 03 September 2002 11:39 am, Cameron Miller wrote:
> Hi Mike,
>
> Maybe the information can be presented in a form more easily directly
> applied to a lecture, lesson plan, class demonstration, or k-12 lab
> exercise.  This could even be posted on a website so future schoolforge
> readers can have a ready reference to use when forging a k-12 science
> course.  Future posts can be about a new piece of global warming course
> material being added to that website.
>
> As it was presented, I missed the point of the post being source
> material for k-12 science teachers, (as you noticed).
>
> - cameron
>
> mike eschman wrote:
> > hello,
> >
> > this post was for k-12 science teachers, not you.
> > the people on the global warming mailing list know about this stuff.
> > sorry it didn't interest you,
> >
> > thanks.
> >
> > mike eschman, etc ...
> >
> > On Tuesday 03 September 2002 11:07 am, Cameron Miller wrote:
> >>Logic.  And this semester, Internet Server Security.
> >>
> >>- cameron
> >>
> >>mike eschman wrote:
> >>>hello Cameron,
> >>>
> >>>what do you teach ?
> >>>
> >>>mike eschman, etc ...
> >>>
> >>>On Tuesday 03 September 2002 10:47 am, Cameron Miller wrote:
> >>>>Maybe this stuff can be better directed to some of the 28,000 sites
> >>>>listed here:
> >>>>
> >>>>http://www.google.com/search?q=Global+Warming+Mailing+List
> >>>>
> >>>>- cameron
> >>>>
> >>>>mike eschman wrote:
> >>>>> Media Alerts Stories Archive --->
> >>>>>http://earthobservatory.nasa.gov/Newsroom/MediaAlerts/2002/20020820103
> >>>>>67 . html
> >>>>>
> >>>>>August 20, 2002
> >>>>>
> >>>>>LIVERMORE RESEARCHERS SHOW DEPTH OF INJECTED CO2 INTO THE OCEAN
> >>>>> CRITICAL AS A GLOBAL WARMING SOLUTION
> >>>>>
> >>>>>LIVERMORE, Calif. ? Researchers from the Lawrence Livermore National
> >>>>>Laboratory have determined that the depth of an injection of carbon
> >>>>>dioxide into the deep ocean is a good predictor of how effective that
> >>>>>location is at sequestering carbon away from the atmosphere.
> >>>>>
> >>>>>Direct injection of CO2 into the deep ocean has been proposed as a way
> >>>>>to slow the accumulation of carbon dioxide in the atmosphere, one of
> >>>>>the causes of global warming. In the direct injection scenario,
> >>>>>fossil-fuel carbon dioxide is injected into the ocean interior,
> >>>>>bypassing the mixing processes that would otherwise cause a relatively
> >>>>>slow transfer of excess atmospheric CO2 in to the deep ocean.
> >>>>>
> >>>>>In a study released today in Geophysical Research Letters, Ken
> >>>>> Caldeira and Philip Duffy of the Climate and Carbon Cycle Modeling
> >>>>> Group and Michael Wickett of the Center for Applied Scientific
> >>>>> Computing, all at Livermore, show that the depth, rather than
> >>>>> radiocarbon, is a relatively good predictor of the effectiveness of
> >>>>> CO2 injection.
> >>>>>
> >>>>>The researchers studied both radiocarbon dating (typically used to
> >>>>> date anthropologic items) and the depths of injection to determine
> >>>>> the effectiveness of direct CO2 injection as a carbon sequestration
> >>>>> strategy.
> >>>>>
> >>>>>Scientists used one-dimensional box-diffusion models and
> >>>>>three-dimensional simulations run under the radiocarbon and
> >>>>>sequestration scenarios described in Livermore's Ocean Carbon-cycle
> >>>>>Model
> >>>>>Intercomparison Project protocols.
> >>>>>
> >>>>>"These simulations indicate that the amount of time it takes for a
> >>>>> water parcel to return to the ocean surface increases with depth, but
> >>>>> is not related to the amount of time since that parcel was last at
> >>>>> the surface," Duffy said.
> >>>>>
> >>>>>Injections were simulated at 800 meters, 1500 meters and 3000 meters
> >>>>> for 100 years near the Bay of Biscay, New York City, Rio de Janeiro,
> >>>>> San Francisco, Tokyo, Jakarta and Bombay.
> >>>>>
> >>>>>The models showed that injection at 3000 meters is quite effective at
> >>>>>sequestering carbon from the atmosphere for several centuries while
> >>>>>injections at shallower depths are less effective. In general,
> >>>>>injections into the Pacific Ocean (San Francisco and Tokyo) were more
> >>>>>effective than injection at the same depth in the Atlantic Ocean (New
> >>>>>York City, Rio de Janeiro and the Bay of Biscay).