Climate models are unable to skillfully model clouds and thus albedo, and use a rough assumption of a 30% global average albedo. If we decrease albedo by 1% from 0.30 to 0.29, the greenhouse equation predicts an increase in surface temperature from 288.433°K to 289.457°K, an increase of 1.024°C warming, mathematically verifying what Dr. Roy Spencer writes in his book,
"The most obvious way for warming to be caused naturally is for small, natural fluctuations in the circulation patterns of the atmosphere and ocean to result in a 1% or 2% decrease in global cloud cover. Clouds are the Earth’s sunshade, and if cloud cover changes for any reason, you have global warming — or global cooling."
|The 2 albedo terms in the equation are notated|
And this is how the sun causes cloudiness changes:ReplyDelete
with this describing the practical consequernces in climate terms: