[Coral-List] More La Ninia

Jim Hendee Jim.Hendee at noaa.gov
Tue Nov 30 08:31:46 EST 2010

My apologies to Greg for accidentally approving this message.  I read
the former one by Dave, and somehow approved both.  This was originally
a reply to a personal message from Greg to Dave that somehow got
entrained in the thread.  This is not cool.


On 11/30/10 8:16 AM, David M. Lawrence wrote:
> You seem desperate to find any reason to deny, well, reason.  The 
> Southern Hemisphere goes through similar cycles of temperature.  But 
> it's the Northern Hemisphere, with the greater distribution of land and, 
> as a result, terrestrial vegetation, that drives the atmospheric cycles.
> If you need further study, I'll be happy to teach you biology, 
> geography, meteorology, or oceanography sometime.
> Later,
> Dave
> On 11/30/2010 8:11 AM, gchallenger at msn.com wrote:
>> ....and temperature drives the seasonal changes in the biosphere do they not?
>> Amazing how a little emotion can obscure clarity of thinking
>> Sent via BlackBerry by AT&T
>> -----Original Message-----
>> From: "David M. Lawrence"<dave at fuzzo.com>
>> Sender: coral-list-bounces at coral.aoml.noaa.gov
>> Date: Mon, 29 Nov 2010 23:50:36
>> To:<coral-list at coral.aoml.noaa.gov>
>> Subject: Re: [Coral-List] More La Ninia
>> Gene, please get your facts right.  The annual zigzags in the Keeling
>> curve are seasonal changes in atmospheric carbon dioxide levels
>> triggered by seasonal changes in the balance between photosynthesis
>> (which removes carbon dioxide from the atmosphere) and respiration
>> (which releases carbon dioxide to the atmosphere) in northern hemisphere
>> terrestrial ecosystems.
>> In the fall, deciduous species drop their leaves, other species stop
>> growing.  Living plants need energy, and produce it by respiration.
>> Dead plants decompose, the bacteria and fungi responsible for that
>> decomposition produce energy by respiration, too.  Respiration dominates
>> the balance through the winter into the spring -- as it does so,
>> atmospheric CO2 concentrations increase.  In the spring and summer,
>> plants leave out and grow -- photosynthesis dominates the balance, and
>> atmospheric CO2 concentrations decrease.  So, contrary to you comment,
>> it's not temperature driving the seasonal changes in CO2, but the biosphere.
>> You really should invest in a fire extinguisher.  The physics is
>> settled, whether or not you choose to pay attention to it.
>> Dave
>> On 11/29/2010 9:33 AM, Eugene Shinn wrote:
>>>         I suspect that Arhenius did not know that if you raise the
>>> temperature you also raise the CO2 level.(thats the little annual
>>> spikes on the Keeling CO2 curve) Even if it was CO2 causing the
>>> cycles in deep sea cores  described by Arrhenius what caused the CO2
>>> spikes.

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