Sentences with phrase «global cloud cover due»

6) The main cloud bands move more poleward to regions where solar insolation is less intense and total global albedo declines via a reduction in global cloud cover due to shorter lines of air mass mixing.

Not exact matches

If the climate sensitivity is low, for example due to increasing low - lying cloud cover reflecting more sunlight as a response to global warming, then how can these large past climate changes be explained?

For instance, increasing cloud cover due to global warming may change the albedo, but this would be a feedback to a larger warming effect, rather than a cooling.

That was due to increased global moisture content, decreased global average cloud cover and decreased sea ice extent at high latitudes.

Re 9 wili — I know of a paper suggesting, as I recall, that enhanced «backradiation» (downward radiation reaching the surface emitted by the air / clouds) contributed more to Arctic amplification specifically in the cold part of the year (just to be clear, backradiation should generally increase with any warming (aside from greenhouse feedbacks) and more so with a warming due to an increase in the greenhouse effect (including feedbacks like water vapor and, if positive, clouds, though regional changes in water vapor and clouds can go against the global trend); otherwise it was always my understanding that the albedo feedback was key (while sea ice decreases so far have been more a summer phenomenon (when it would be warmer to begin with), the heat capacity of the sea prevents much temperature response, but there is a greater build up of heat from the albedo feedback, and this is released in the cold part of the year when ice forms later or would have formed or would have been thicker; the seasonal effect of reduced winter snow cover decreasing at those latitudes which still recieve sunlight in the winter would not be so delayed).

Svensmark had the nerve to hypothesize that most of the global warming of the 20th Century can be explained by the reduction in cosmic rays due to livelier solar activity, resulting in less low cloud cover and warmer surface temperatures.

As Roy Spencer points out, it doesn't take much of a change in cloud cover to account for global warming due to increased insolation * at the ocean surface *.

, plus the need for Dr Phil Jones to bravely «hide the decline» in the tree ring data (due to the fact tree ring growth is slowed by increased cloud cover / global dimming).

In short, the «skeptic» hypothesis that changes in cloud cover due to internal variability are driving global warming does not hold up when compared to the observational data.

It is logical to presume that changes in Earth's albedo are due to increases and decreases in low cloud cover, which in turn is related to the climate change that we have observed during the 20th Century, including the present global cooling.