Sentences with phrase «strong aerosol cooling»

To which the response will be: Yes but the aerosol components are so uncertain and tunable that we will shortly demonstrate how a strong aerosol cooling effect is consistent with a lack of mid-century aerosol cooling, so there's no need to doubt the hypothesis of strong CO2 warming.

If there's much less mid-century cooling, that will conflict with an assumed strong aerosol cooling effect in the models, and by implication, a strong CO2 warming effect.

If the global models are correct in this respect, the implication is that much of the observed recent excess warming of the Atlantic is due either to internal mechanisms (variability in the Atlantic Overturning circulation, for example) or non-greenhouse gas external forcing (e.g. recovery from strong aerosol cooling).

Not exact matches

One could also argue that the stratosphere isn't being loaded with all sorts of aerosols right now because of «social interia» and that the «correct interpretation of climate science» is therefore that there's a strong cooling commitment.

In the troposphere, major volcanic events have a strong cooling effect, as stratospheric aerosols reflect away some incoming solar radiation before it enters the troposphere.

During that period, moreover, there were no constraints on the burning of coal whatsoever, thus no constraints on the production of the sort of aerosols currently claimed to have a cooling effect on the atmosphere strong enough to offset the effect of CO2 emission.

The low net historical iRF efficacy result appears to be dominated by very strong cooling aerosol efficacy.

Cox seems to be straightforward in saying that reduced aerosol effects (cooling) will result in greater warming (from GHGs) and that the cooling effect now is stronger than normally supposed.

Owing to long - range aerosol transport, higher cloud frequency and susceptibility, the cooling over ocean is stronger than over land, resulting in an ocean - to - land ratio of 1.3.

Your estimates of climate sensitivity come from the IPCC, which assumes that aerosols will continue to provide a very strong cooling effect that offsets about half of the warming from CO2, but you are talking about time frames in which we have stopped burning fossil fuels, so is it appropriate to continue to assume the presence of cooling aerosols at these future times?

«When eruptions are powerful enough to reach the stratosphere (18 km or more above the surface at the equator), these sulphate aerosols can stay aloft for a number of years and have a strong cooling effect on the climate.»

The IPCC people must have seen all this and still somehow concluded that anthropogenic aerosols do have a strong cooling effect.

Dirt particles in the atmosphere, especially sulphate aerosols, have created a certain cooling effect and has prevented a stronger temperature increase at the moment.

You say» Needless to say, one would expect a strong cooling effect of the aerosols over that station.

«In our mor recent global model simulations the ocean heat - uptake is slower than previously estimated, the ocean uptake of carbon is weaker, feedbacks from the land system as temperature rises are stronger, cumulative emissions of greenhouse gases over the century are higher, and offsetting cooling from aerosol emissions is lower.

In addition to reduced aerosol cooling and increased black carbon warming there is the IPCC's new admission of strong evidence for some mechanism of solar forcing substantially stronger than TSI (p. page 7 - 43): «Many empirical relationships have been reported between GCR or cosmogenic isotope archives and some aspects of the climate system (e.g., Bond et al., 2001; Dengel et al., 2009; Ram and Stolz, 1999).

That is, there is still a fair chance that we can «hold the 2 °C line», if strong mitigation of greenhouse gases is combined with the following three actions: (i) a slow, rather than instant, elimination of aerosol cooling, (ii) a directed effort to first remove warming aerosols like black carbon, and (iii) a concerted and sustained programme, over this century, to draw - down excessive CO2 (geo - and bio-engineering) and simultaneously reduce non-CO2 forcings, such that the final equilibrium temperature rise will be lower than would otherwise be expected on the basis of current concentrations.

Based on discussions with my colleagues Rong Zhang and Mike Winton, this seems to be a consequence of an AMOC (Atlantic Meridional Overturning Circulation) which builds in strength when the aerosol cooling is strong, trying to balance a part of the cooling at the surface with warm waters advected in from the tropics, but also — by a process that is not particularly straightforward — cools the subsurface waters.