41
The Environment / "Another Hockey Stick Illusion"?
« on: 19/04/2011 12:45:36 »
Hi yor_on, I had wondered if it would be long before you turned up here. I have seen comments of yours relating to questions about both “climate change” and “Physics, Astronomy & Cosmology” topics and the impression that I get is that you have a good understanding of the latter. I expect that you would even be able to make a worthwhile contribution to the work that Professor Andrew White is doing at CERN (my comment on 17th @ 11:36:14).
It seems to me that you express opinions on the former from a position of ignorance comparable to mine, so may have more to learn from the exchanges here than to contribute. Of course I may be wrong so, even though you use a false name, are you prepared to disclose the extent of your scientific expertise in the subject of molecular dynamics beyond that you may be a good runner (http://www.thenakedscientists.com/forum/index.php?action=profile;u=9199)?
Your 1612-word comment quotes from and links to some very interesting stuff about those attempts to reconstruct past atmospheric CO2 content using air “trapped” in ice for decades, centuries and millennia (although I am always suspicious of anything that appears in that “Hockey Team” blog Realclimate) but it does nothing that answers my simple question.
You ask
So, your
Your
I have already had discussions with Professors Richard Alley, Severinghaus and Bender about the other proxies such as
You may find the article “Uncertainty in Climate Change (WP)” by A.T. Grove and E. Lopez-Gunn (http://www.realinstitutoelcano.org/wps/portal/rielcano_eng/Content?WCM_GLOBAL_CONTEXT=/elcano/elcano_in/zonas_in/dt25-2010) of interest but that really is another question which I suggest that you raise separately if you wish to learn something about those other proxies.
Best regards, Pete Ridley
It seems to me that you express opinions on the former from a position of ignorance comparable to mine, so may have more to learn from the exchanges here than to contribute. Of course I may be wrong so, even though you use a false name, are you prepared to disclose the extent of your scientific expertise in the subject of molecular dynamics beyond that you may be a good runner (http://www.thenakedscientists.com/forum/index.php?action=profile;u=9199)?
Your 1612-word comment quotes from and links to some very interesting stuff about those attempts to reconstruct past atmospheric CO2 content using air “trapped” in ice for decades, centuries and millennia (although I am always suspicious of anything that appears in that “Hockey Team” blog Realclimate) but it does nothing that answers my simple question.
You ask
Quote
Why not try to see if you can shorten your question instead?but how much shorter than
Quote
.. why do paleo-climatologists use collision diameter in preference to kinetic diameter when considering the migration of air molecules through firn and ice ..do you need? I stated that simple question in my opening comment on The Naked Scientists blog and have repeated it twice on this very page, only yesterday at 10:04:48 then again at 18:59:37. Have you bothered to read this thread before commenting or have you simply jumped in blind? How you can paraphrase that simple question as
Quote
it's a question of if we can prove that the ice samples containing air bubbles can be guaranteed to have the exact same atmosphere (and CO2 concentration?) As there was in the atmosphere when the ice layers came to be historically?is beyond me.
So, your
Quote
Anyway, you got some references I hope. If that now was your question?is way off beam because you have simply provided quotations and links that contributed to answering your own mistaken interpretation of my question.
Your
Quote
As for kinetic diameter, versus collision diameter? Well, exactly how should we construct that experiment? over what time period?again has nothing to do with my simple question. As far as I am aware I have not asked for any experiment about kinetic v collision diameter so please would you point to where you think that I have done so. What I have done is ask Professor Jeff Severinghaus, one of the “experts”, if they have run their model substituting kinetic for collision diameter.
I have already had discussions with Professors Richard Alley, Severinghaus and Bender about the other proxies such as
Quote
.. trees, rocks, sediment etc of course ..and my scepticism about the statistical manipulations used to make them
Quote
.. fit/correlate to each other
You may find the article “Uncertainty in Climate Change (WP)” by A.T. Grove and E. Lopez-Gunn (http://www.realinstitutoelcano.org/wps/portal/rielcano_eng/Content?WCM_GLOBAL_CONTEXT=/elcano/elcano_in/zonas_in/dt25-2010) of interest but that really is another question which I suggest that you raise separately if you wish to learn something about those other proxies.
Best regards, Pete Ridley