Check out this recent (3/5/09) study by Garth Paltridge, et al. at:
http://www.icecap.us/ ... Well, it has been moved from this site, so here is the relevant quote from the abstract of the article:
Negative trends in q (specific humidity) as found in the NCEP (National Centers for Environmental Prediction) data would imply that long-term water vapor feedback is negative — that it would reduce rather than amplify the response of the climate system to external forcing such as that from increasing atmospheric CO2.
And here is another link to the article:
http://wattsupwiththat.com/2009/03/05/negative-feedback-in-climate-empirical-or-emotional/
The IPCC models all incorporate positive reinforcements. Otherwise, (and this is not controversial) the global temperature rise from twice the current levels of CO2 over the next century would only be 1° C. Yet common sense says that if that were true, the Earth's climate would have already experienced a runaway greenhouse effect like that on Venus due to our having 10 times the current amount of CO2 in earlier geologic periods. Here is a new scientific study (and there are others) that point to negative feedbacks that will tend to stabilize our climate.
http://www.icecap.us/ ... Well, it has been moved from this site, so here is the relevant quote from the abstract of the article:
Negative trends in q (specific humidity) as found in the NCEP (National Centers for Environmental Prediction) data would imply that long-term water vapor feedback is negative — that it would reduce rather than amplify the response of the climate system to external forcing such as that from increasing atmospheric CO2.
And here is another link to the article:
http://wattsupwiththat.com/2009/03/05/negative-feedback-in-climate-empirical-or-emotional/
The IPCC models all incorporate positive reinforcements. Otherwise, (and this is not controversial) the global temperature rise from twice the current levels of CO2 over the next century would only be 1° C. Yet common sense says that if that were true, the Earth's climate would have already experienced a runaway greenhouse effect like that on Venus due to our having 10 times the current amount of CO2 in earlier geologic periods. Here is a new scientific study (and there are others) that point to negative feedbacks that will tend to stabilize our climate.
"Praise the Lord for the expanding grandeur of creation, worlds known and unknown, galaxies beyond galaxies, filling us with awe and challenging our imaginations." 2007 Reform Siddur
