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- Newsgroups: alt.activism
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!rtech!ingres!rogerl
- From: rogerl@Ingres.COM (Roger Leuthner)
- Subject: Re: FEATURE: "Energy Without Oil" Executive Summary
- Message-ID: <1993Jan26.175846.109@pony.Ingres.COM>
- Followup-To: alt.activism.d
- Keywords: energy environment oil press
- Reply-To: rogerl@Ingres.COM (Roger Leuthner)
- Organization: Ask Computer Systems Inc., Ingres Division, Alameda CA 94501
- References: <Greenpeace.19Jan1993.0937@naughty-peahen> <Greenpeace.19Jan1993.2006@naughty-peahen> <1993Jan20.211328.14871@pony.Ingres.COM> <C18M48.9yz@news.cso.uiuc.edu>
- Date: 26 Jan 93 17:58:46 GMT
- Lines: 52
-
- In article <C18M48.9yz@news.cso.uiuc.edu> britzel@uxh.cso.uiuc.edu (ritzel brian jay) writes:
- >rogerl@Ingres.COM (Roger Leuthner) writes:
- >
- >>It doesn't matter whether carbon dioxide is emitted by the burning of oil
- >>vs the burning of 'biofuels'. I suppose it is more PC to burn something
- >>called a 'biofuel' instead of gasoline (when in reality the waste products
- >>are similar).
- >
- >
- >Try thinking of the carbon incorporated in biomass as a "flow" and
- >the carbon in petrofuels as a "stock" when contemplating the global
- >carbon cycle...
- >
- >Switching to biofuels may not lead to a decrease in atmospheric carbon,
- >but I believe the operative word in the original post was "stabilization",
- >not "decrease."
-
- Sure.
-
- I'll disregard, for the moment, the fact that the "stock" of carbon in
- fossil fuels is already part of the overall pool - give or take a few
- million years, and assume that there was a state of equilibrium [before
- mans impact] achieved by the earth's natural systems, in terms of carbons
- - carbohydrates on the surface and carbon dioxide in the atmosphere.
-
- The problem is not that there is more carbon being put into the biosphere,
- it is that the equilibrium has been upset, and now there is [apparently]
- more carbon being emitted than being absorbed. The gross size of the pool
- is irrelevant, unless either (or both) solid or gaseous carbon is itself
- nearing depletion - in which case the introduction of carbon from outside
- the pool would be important.
-
- Switching to biofuels will not lead to a "stabilization" of the
- atmospheric carbon. The amount of carbon in the air will increase
- regardless of its original source; this is because we are exceeding the
- capacity of the biosphere to incorporate gaseous carbon into their
- structure. Going a little further (shakily, I admit) it is possible that
- the conversion of [say] plants into compost with accompanying emission of
- methane [which is later burned] is meaningfully reducing the ability of
- the biosphere to work towards equilibrium.
-
- Looking at it from a stock/flow perspective, burning biofuels will
- preserve the current amount of carbon in the _biosphere_. It will still
- increase the _atmospheric_ levels of carbon dioxide, since the capacity
- for absorption is fairly constant [in the context of this argument]. In
- other contexts, as noted weakly above, using biofuels may be reducing the
- ability of the biosphere to absorb carbon dioxide.
-
- >--------------------------------------------------------------------------------
- >Brian Jay Ritzel britzel@uxh.cso.uiuc.edu
- >Department of Civil Engineering
- >University of Illinois
-