We find that the net
effects of cloud masking and cloud PRP on atmospheric absorption are both substantial.
Not exact matches
However, there is a price
of sorts — while locally the Asian Brown
Cloud amplifies the greenhouse
effect, globally it
masks the greenhouse
effect due to the aerosol - induced global dimming.
This, even though over the Indian Ocean basin Ramanathan's team found that sooty brown
clouds enhance heating by half
of CO2's claimed
effect, not
masking it by half as had previously been thought.
Similarily, the uncertainty in aerosols is mostly in the data (and then
cloud effects), the «
masking»
effect is a result
of the model's physics it isn't just parameterized and fed in.
«Fig. 1a shows an averaged IRIS
cloud - cleared... and land / island areas have been
masked out... Figure 1c shows the component
of the simulated spectrum that includes only the
effect of trace - gas changes between 1970 and 1997 (omitting..
The partial radiative perturbations (PRPs) due to changes in
cloud and due to the
effects of the pre-existing climatological
cloud distribution on non-
cloud changes, known as «
cloud masking», are calculated when atmospheric CO2 concentration is doubled for the HadSM3 and MIROC models and for a large ensemble
of parameter perturbed models based on HadSM3.