This led us in turn to examine how these areas changed when surface temperature

This led us in turn to examine how these areas

This preview shows page 227 - 229 out of 323 pages.

This led us, in turn, to examine how these areas changed when surface temperature changed—rather than tofocus on such quantities as mean cloudiness and mean humidity. After attempting to use data from low orbit satellites, it became clear that time and space resolution was inadequate. At this point, mycolleague, Ming-Dah Chou, proposed using geostationary data from the Japanese GMS5 satellite. Fortunately, he had access to such data by way of Taiwan. Also, our previousefforts focused on water vapor which is hard to measure.Focusing on cloudinessproved somewhat easier. Could you summarize the significance of your paper in layman's terms? The results, thus far, suggest that cloudy-moistregions contract when the surface warms and expand when the surface cools.Ineach case, the change acts to oppose the surface change, and thus presents astrong negative feedback to climate change.The name "iris" refers to the analogy with the eye's iris which opens and closes in response tolight levels. The physical foundation for the effect in the climate system seems to hinge on the fact that precipitation forms more efficiently in warmer cumulus towers, and hence leaves lessunprecipitated moisture and ice to form layer clouds outside of the towers. If the mechanism is correct, then the response of the climate toincreased anthropogenic greenhouse gases is much reduced.It should be added, that currentmodels fail to replicate the observed behavior of clouds, and this remains trueregardless of remaining uncertainties in the iris hypothesis.
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Heat Venting/Iris Solves Warming And, Natural Heat Vents Act as A Thermostat for the Climate – Checks Any Warming Carlisle in ‘01(John, Carlisle is director of The National Center for Public Policy Research's Environmental Policy Task Force “Natural Heat Vent May Counter Global Warming,” National Policy Analysis #336, May 2001, pg online @ //um-ef)Just recently, a team of scientists led by Dr. Richard Lindzen of the Massachusetts Institute of Technology published a paper in which they theorize that there could be a natural"vent" in the Earth's atmosphere that releases heat into space.The authors caution that more research needs to bedone to verify the phenomenon. But they say that, if true, the existence of a de factoatmospheric thermostat that helpskeep the Earth's temperature on an even keel would require global warming theoriststo significantly scale back their predictions of warming allegedly caused by thebuildup of greenhouse gases.1 The study, published in theMarch 2001 issue of the Bulletin of theAmerican Meteorological Society, examines the behavior of high cirrus clouds over a large section of the western tropical Pacific Ocean.
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