Of the three decades of satellite data, they look at
just 6 years.  Then, they hand (cherry) pick 15 periods
within those data.  Call me a skeptic.

-.-. --.-  Roger
=-=-=-=-=-=
Cirrus Disappearance: Warming Might Thin Heat-trapping Clouds

ScienceDaily (Nov. 5, 2007) - The widely accepted (albeit unproven)
theory that manmade global warming will accelerate itself by creating
more heat-trapping clouds is challenged this month in new research
from The University of Alabama in Huntsville.

Instead of creating more clouds, individual tropical warming cycles
that served as proxies for global warming saw a decrease in the
coverage of heat-trapping cirrus clouds, says Dr. Roy Spencer, a
principal research scientist in UAHuntsville's Earth System Science
Center.
That was not what he expected to find.

[ . . . ]

The team analyzed six years of data from four instruments aboard three
NASA and NOAA satellites. The researchers tracked precipitation
amounts, air and sea surface temperatures, high and low altitude cloud
cover, reflected sunlight, and infrared energy escaping out to space.

When they tracked the daily evolution of a composite of fifteen of the
strongest intraseasonal oscillations they found that although rainfall
and air temperatures would be rising, the amount of infrared energy
being trapped by the cloudy areas would start to decrease rapidly as
the air warmed. This unexpected behavior was traced to the decrease in
cirrus cloud cover.

Please see:
http://www.sciencedaily.com/releases/2007/11/071102152636.htm


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