Now here is a far more interesting trend than Mauna Loa or any other carbon dioxide atmospheric content! It seems some scientists have detected a reduction in the net sunlight reaching Earth. Instead of adjusting the greenhouse multiplier for carbon dioxide in his model, maybe Al Gore should adjust albedo. There is real data behind it! But what for; Al Gore can sell the model no matter how far it deviates from reality. Maybe the greater the error, the better it sells anyway. (Spell albedo, Al; and you can look).
Palle et al: Earthshine Trends 1999-2007
In this paper, we have demonstrated that the agreement between earthshine and CERES reflectances have shown a dramatic improvement after CERES data were re-calibrated and earthshine data were re-analyzed. In the common period, earthshine, CERES along with ISCCP-FD data show a trendless albedo. However, preceding CERES, earthshine and ISCCP-FD reflectances show a significant increase before flattening and holding the increase. This implies a reduction in the net sunlight reaching Earth.
Figure 3. Earthshine changes in albedo shown in blue, ISCCP-FD shown in black and CERES in red. A climatologically significant change before CERES followed by a long period of insignificant change.
Update, also from the report: “However, a long-term, global albedo database does not exist.” I guess such a database would not be helpful in selling carbon credits. It could however be helpful in understanding Earth’s climate; another good reason not to have one.
H/T: Curious Anomalies in Climate Science (below the fold)
What could be the mechanism for such a change? Read The Chilling Stars by Svensmark and Calder for thorough elucidation.