[Coral-List] More La Ninia

David M. Lawrence dave at fuzzo.com
Tue Nov 30 08:35:37 EST 2010

The other point I should have made -- again, evidence of obscured 
clarity of thinking on someone's part (not mine) -- is that according to 
Challenger's challenge, as temperatures RISE in the Northern Hemisphere, 
atmospheric carbon dioxide levels FALL, which is the opposite of what he 
(and Gene) claim.

If anyone bothers to look at the monthly averages in the Keeling Curve, 
atmospheric CO2 concentration hits a peak about April or May before the 
growing season takes off and months before temperatures hit their annual 
highs.  As vegetation in the Northern Hemisphere grows, it removes CO2 
from the atmosphere -- as temperatures approach their annual highs, 
atmospheric CO2 concentrations are DROPPING and they continue to do so 
until hitting a low in November or December.


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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