Sentences with phrase «negative total aerosol»
With the posterior mean less negative than the 95 % point of the prior, the observational data must be pointing to an even less negative total aerosol AF estimate than -0.8 W / m ^ 2, with the wing of the prior pulling the posterior to a more negative mean.
http://julesandjames.blogspot.ru/ Not exact matches
When extra forcing of -0.25 or -0.5 W / m ^ 2 is added his prior mean total aerosol forcing is very substantially more negative than -0.7 W / m ^ 2 (the posterior mean without the extra indirect forcing).
Clearly, there are many positive forcings (warming influences) and negative forcings (cooling influences)-- the total includes methane, N2O, black carbon, small changes in sunlight, aerosols, etc..
Your comment that the total effect of aerosols since the industrial revolution has been negative is largely true only up to 1972.
The total effect of aerosols since the industrial revolution has been negative.
From the IPCC AR4 report, FAQ2.1, Figure 2, the net effect of anthropogenic aerosols is clearly negative (cooling), totalling about -1.2 W / m2 since the dawn of the industrial era in 1750 to 2005.
Whether the total global anthropogenic aerosol forcing is lower (less negative) today than it was in the dimming phase 40 years ago can't be told with certainty.
When extra forcing of -0.25 or -0.5 W / m ^ 2 is added his prior mean total aerosol forcing is very substantially more negative than -0.7 W / m ^ 2 (the posterior mean without the extra indirect forcing).