Sentences with phrase «dimming by aerosols»

If you refer to the global dimming by aerosols, I don't think it was entirely «unrecognized» beforehand.

Not exact matches

It comes from ARM and James Hansen's references to global dimming developing from clouds being enhanced and or formed by pollution, sulfates, and or certain aerosols and so forth.

Human aerosol emissions are also offsetting a significant amount of the warming by causing global dimming.

How about BAU with carbon dioxide buildup partially masked by aerosol - induced global dimming, building climate crisis leading to a major economic recession?

«A rapid cutback in greenhouse gas emissions could speed up global warming... because current global warming is offset by global dimming — the 2 - 3ºC of cooling cause by industrial pollution, known to scientists as aerosol particles, in the atmosphere.»

As an aside, the radiative forcing by aerosols (in both long wave and solar radiation at the tropopause) is not the same as global dimming (which is a solar radiation effect at the surface) though they are related.

These are at the moment causing warming about the same as the dimming produced by sulphate aerosols.

You have one basic misunderstandiing about global dimming, it is not caused by CO2 but by SO2 and particulate pollution, what are called aerosols.

Their belief came about because the optical physics of aerosols, originating from Sagan and introduced to climate modelling by his ex-students, Lacis and Hansen in 1974 at GISS / NAS, predicts the cloud part of «global dimming», the increase of albedo by aerosols supposed to hide present CO2 - AGW.

a) decreases («dimming») until the 1980s, because atmospheric pollutants (aerosols) make the atmosphere more reflective and also clouds, by increasing the number of water droplets in the clouds, which in turn increases the amount of sunlight reflected, and subsequent

Mid-century aerosol «global dimming» and the subsequent partial reduction («global brightening») have been well described in the work by Martin Wild and others.

This result is consistent with the MODIS and MISR AOT records as well as with the recent gradual reversal from brightening to dimming revealed by surface flux measurements in many aerosol producing regions.

Now, how would all of this fit with the idea of GHGs - induced global warming mitigated by aerosols (global dimming)?

(Part of the How to Talk to a Global Warming Skeptic guide) Objection: Scientists claim that global warming from greenhouse gases is being countered somewhat by global dimming from aerosol pollution.

This was likely an aerosol increase from the increased refining of oil in Texas and more local emissions from cars, whose effect on dimming is enhanced by the humid environment in the SE, and perhaps land - use change -LRB-?).

Third: There was no cooling in the 1920s; in fact that was the start of a multidecadal warming trend that lasted until just after World War II (followed by a brief cooling trend, possibly due to increased aerosols dimming incoming sunlight together with some pretty big volcanic eruptions which did the same thing).

Most AGW supporters would argue that the observed sensitivity over the last 30 years has been suppressed by dimming / sulfate aerosols.

The aerosol hypothesis is that sulfate aerosols and black carbon are the main cause of global dimming, as they tend to act to cool the Earth by reflecting and scattering sunlight before it reaches the ground.

(By the way, for those of you who already know about global cooling / dimming and aerosols, I will just say for now that these effects can not be making the blue line go down because the IPCC considers these anthropogenic effects, and therefore in the pink band.