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Tuesday, February 13, 2007

Global warming, dimming and brightening

Here's another report which calls into question the conclusions of the IPCC's consensus of climate change.

Gerald Stanhill of the Institute of Soil, Water and Environmental Sciences at the Volcani Center in Bet Dagan, Israel, raises some questions of real concern... which questions are intended, in his words, "to draw attention to the challenge that recently reported changes in solar radiation at the earth's surface, Eg↓, pose to the consensus explanation of climate change."

Stanhill begins his short treatise by noting there was "a widespread reduction in solar radiation at the earth's surface, often referred to as global dimming," which "lasted from the mid-1950s until the mid-1980s when a recovery, referred to as global brightening, started." This dimming over the land surface of the globe led to a 20 W/m2 reduction in Eg↓, between 1958 and 1992, which negative shortwave forcing, in his words, was "far greater than the 2.4 W/m2 increase in the positive longwave radiative forcing estimated to have occurred since the industrial era as a result of fossil and biofuel combustion," which latter forcing, he notes, is "what provides the consensus explanation of global warming."

Reporting that "the cause of these large changes in Eg↓, is not known," but that they totally dwarf the change in longwave radiative forcing claimed to be responsible for 20th-century global warming, Stanhill goes on to further report that "no reference to these findings has appeared in the three massive IPCC [Intergovernmental Panel on Climate Change] assessment reports published during the past 15 years...
Read the rest at CO2 Science

1 comment:

Cedric said...

Before reaching such drastic conclusions, read this.