[Winona Online Democracy]
----- Original Message -----
From: Leslie Hittner
To: c.e. woodford
Sent: Saturday, March 03, 2007 10:30 PM
Subject: Re: [Winona] Where is the CO2 coming from?
I repeat: All of the "natural" sources and a few campfires, I expect.
Natural Sources: Plants, volcanoes, forest fires set by lightning, stored CO2
released out of ice, etc.
-Leslie Hittner
----- Original Message -----
From: c.e. woodford
To: Leslie Hittner
Cc: winona forum winona forum
Sent: Saturday, March 03, 2007 6:22 PM
Subject: Re: [Winona] Where is the CO2 coming from?
[Winona Online Democracy]
------------------------------------------------------------------------------
Mr Hittner,
Thanks for anticipating my next question. Can you answer my question
regarding the Bronze Age before we jump to the next?
Regards,
C.E Woodford
Leslie Hittner <[EMAIL PROTECTED]> wrote:
Mr. Woodford,
In anticipation of your next question, I thought I would offer the
following:
Complex systems consist of a myriad of feedback mechanisms. Some of these
mechanism provide "positive" feedback. Others provide "negative" feedback.
Positive feedback mechanisms reinforce the change that is taking place.
Negative feedback mechanisms diminish that change. A simple example of positive
feedback is the screaming tone from a PA system when the microphone picks up a
bit of the output of a connected loud speaker and amplifies one of the
frequencies (that which is most "in sync" based upon the seperation between the
microphone and the loud speaker) to create the tone. PA system designers,
recognizing this, have introduced negative feedback circuits into their
equipment. SUCH SYSTEMS, HOWEVER, NEVER REACH TRUE EQUILIBRIUM. You can always
observe a very slight ring in PA system that is self-adjusting for positive
feedback.
The example I offered yesterday consisted of several factors that provided
positive feedback to the global climate change taking place - namely warming.
At the same time, negative feedback components are at work. The most
important negative feedback component in global climate control that scientists
have identified are the oceans - specifically the ocean currents driven by
thermal and coreolis affects.
As global temperature increases the ice in the polar regions begins to
melt. This major - unusual - influx of fresh water into the ocean system
reduces the salinity of the seas. Salt in the oceans increases their ability to
transport heat around the world. Reducing salt reduces the effectioveness of
this heat transport mechanism. Less heat is transported away from the
equatorial parts of the Earth and the regions near the poles begin to cool. An
ice age follows. Polar ice builds up. The ocean salinity increases, etc. etc.,
What was unexpected was that polar ice core samples indicate that the
SWITCH (what scientists call a cusp, or a phase transition) takes only about 10
years. In other words, we could go from a period of global warming that lasted
hundreds or thousands of years to a period of global cooling (ice age) that
lasted hundreds or thousands of years within 10 years! The same is true of the
"switch" to a warming cycle, which we have just experienced.
We KNOW that CO2 plays a big part in this complex cycle. We KNOW that
recent human activity has made a BIG impact on the CO2 levels in the
atmosphere. We KNOW that we are in a warming cycle which corelates closely with
the current spiralling CO2 levels.
So...to answer the question I thought you would next ask:
My example global warming event ends with a cooling event. Little warming
events end with little cooling events. Big warming events end with ice ages.
The evidence points to a mighty big warming event...and we might be able to
do something about it. We can't stop it at this point, but the evidence
suggests that we can moderate it. We simply must do so.
-Leslie Hittner
----- Original Message -----
From: c.e. woodford
To: winona@mnforum.org
Sent: Friday, March 02, 2007 4:37 PM
Subject: [Winona] Where is the CO2 coming from?
[Winona Online Democracy]
--------------------------------------------------------------------------
Mrs/Ms Hitner,
I dont know where it is coming from...Can you tell me why there were
spikes in the Bronze age as well? Certainly it was coming from somehere then as
well correct? I need you to clarify that for me so I can better make an
accurate decision.
regards
c.e. woodford
--------------------------------------------------------------------------
Need Mail bonding?
Go to the Yahoo! Mail Q&A for great tips from Yahoo! Answers users.
--------------------------------------------------------------------------
_______________________________________________
This message was posted to Winona Online Democracy
All messages must be signed by the senders actual name.
No commercial solicitations are allowed on this list.
To manage your subscription or view the message archives, please visit
http://mapnp.mnforum.org/mailman/listinfo/winona
Any problems or suggestions can be directed to
mailto:[EMAIL PROTECTED]
If you want help on how to contact elected officials, go to the Contact
page at
http://www.winonaonlinedemocracy.org
------------------------------------------------------------------------------
Get your own web address.
Have a HUGE year through Yahoo! Small Business.
------------------------------------------------------------------------------
_______________________________________________
This message was posted to Winona Online Democracy
All messages must be signed by the senders actual name.
No commercial solicitations are allowed on this list.
To manage your subscription or view the message archives, please visit
http://mapnp.mnforum.org/mailman/listinfo/winona
Any problems or suggestions can be directed to
mailto:[EMAIL PROTECTED]
If you want help on how to contact elected officials, go to the Contact page
at
http://www.winonaonlinedemocracy.org_______________________________________________
This message was posted to Winona Online Democracy
All messages must be signed by the senders actual name.
No commercial solicitations are allowed on this list.
To manage your subscription or view the message archives, please visit
http://mapnp.mnforum.org/mailman/listinfo/winona
Any problems or suggestions can be directed to
mailto:[EMAIL PROTECTED]
If you want help on how to contact elected officials, go to the Contact page at
http://www.winonaonlinedemocracy.org
