Sentences with phrase «degree by the aerosols»

On top of that, the murky signal is also apparently compensated to a substantial degree by the aerosols that we are creating.

Not exact matches

Aerosols are already known to reduce global warming: The vast clouds of sulfates thrown up in the 1991 eruption of Mount Pinatubo in the Philippines, for example, reduced average global temperatures by about half a degree Celsius.

This contains the quote that quadrupling aerosols could decrease the mean surface temperature (of Earth) by as much as 3.5 degrees K.

If you want to assume that aerosols resulting from pollution produced by the burning of fossil fuels were responsible for the cooling evident from 1940 through the late 70's, then you have no reason to claim ANY degree of warming due to CO2 forcing during any earlier period.

This is a peer reviewed paper by respected scientists who are saying that aerosol forcing means that the majority of the warming caused by existing co2 emission has effectively been masked thus far, and that as aerosols remain in the atmosphere for far shorter a duration of time than co2, we will have already most likely crossed the 2 degree threshold that the G8 politicians have been discussing this week once the cooling effect of aerosols dissipate.

Let's see... many models show that aerosols could have been artificially keeping the world's average surface temperature cooler by about 3 - 5 degrees C from 1900 - 2000 --(sulfate aerosols certainly have some certifiable cooling effects cancelling out the warming effects of CO2).

... and all by itself... woops... a possible isolated, independent temperature rise of 3 - 5 degrees C average world surface temperatures by 2100, not even including any other positive forcings, because the forcing is already there waiting for the cancelling aerosol cooling effect to be removed...

We can, to some degree, remove the influence of volcaninc aerosols just by computing 10 - point moving averages.

In tentative estimates, in order to bring down the temperature in the troposphere by one degree, it is necessary to throw into it about a million tons of aerosols or burn 300,000 tons of sulfur.

However, I am not a «warmista» by any means — we do not know how to properly quantify the albedo of aerosols, including clouds, with their consequent negative feedback effects in any of the climate sensitivity models as yet — and all models in the ensemble used by the «warmistas» are indicating the sensitivities (to atmospheric CO2 increase) are too high, by factors ranging from 2 to 4: which could indicate that climate sensitivity to a doubling of current CO2 concentrations will be of the order of 1 degree C or less outside the equatorial regions (none or very little in the equatorial regions)- i.e. an outcome which will likely be beneficial to all of us.

And the fact that they each «run hot» to a different degree unless fiddled by use of a completely arbitrary «aerosol cooling» strongly suggests that none of them emulates the climate system of the real Earth.

For example, under the ranges stated by the IPCC, the world might well have cooled 0.1 degrees over the six decades — greenhouses gasses could have produced 0.5 degrees of warming and aerosols -0.6 degrees — and Nuccitelli would still be worrying about global warming.

There is medium confidence that this difference between models and observations is to a substantial degree caused by unpredictable climate variability, with possible contributions from inadequacies in the solar, volcanic, and aerosol forcings used by the models and, in some models, from too strong a response to increasing greenhouse - gas forcing.

The degree of spatial heterogeneity can be seen by considering the aerosol optical depth for a number of aerosol species as shown by model results in Figure 4 - 1.

In all these regions, greenhouse gases are estimated to have caused generally increasing warming as the century progressed, balanced to a greater or lesser degree, depending on the region, by cooling from sulfate aerosols in the middle of the century.»

To have a cooling effect of.5 - 1.0 C (which is what they needed, at a minimum, to make their models work running backwards) would imply aerosols were cooling these selected areas of effect by 6 - 12 degrees Celsius, which was totally improbable.

One recent study estimated it would take 6,700 business jet flights per day — outfitted with spraying equipment — to keep enough aerosols in the stratosphere to cool the climate by one degree Celsius.

Given these areas, for the whole world to be cooled 1 degree C by aerosols and black carbon, the areas in orange and red would have to cool 15 or 20C, which absolutely no one has observed.