Sentences with phrase «possible effects of clouds»

Besides the ones mentioned by pjm in comment 41, one needs to look at the possible effects of clouds.

Not exact matches

Possible reasons include increased oceanic circulation leading to increased subduction of heat into the ocean, higher than normal levels of stratospheric aerosols due to volcanoes during the past decade, incorrect ozone levels used as input to the models, lower than expected solar output during the last few years, or poorly modeled cloud feedback effects.

You also state: «It is possible that GCRs do have an effect on climate through the modulation of clouds, but I don't think it is very strong.»

It's possible that CO2 contributes about a.6 C increase in temperature and that the effects of clouds acts as a negative feedback to moderate further increases.

# 27 CCPO It's possible that CO2 contributes about a.6 C increase in temperature and that the effects of clouds acts as a negative feedback to moderate further increases.

So, we have a solid understanding of the effect of the GH gases, and clouds need to be doing some surprising flip - flops to be the only possible alternative explanation.

Instead, the aim of our Science paper was to illustrate as clearly and as simply as possible the basic operating principles of the terrestrial greenhouse effect in terms of the sustaining radiative forcing that is provided by the non-condensing greenhouse gases, which is further augmented by the feedback response of water vapor and clouds.

Because the earth has clouds with behaviors, and atmos moisture is not uniform or constant, and surface albedo changes constantly, it is possible to have either or amplification or damping of the theoretical CO2 effect (or both via different processes).

A few years ago, Pierce and Adams modeled the potential cloud forming effect of cosmic rays and found it wanting by more than an order of magnitude, even when the most favourable assumptions possible were made.

Increasing the brightness of marine stratocumulus clouds, as proposed by John Latham, would affect about 17 % of the earth's surface, and the Lenton - Vaughan analysis suggests that the whitening effect would have to be considerably more marked than previous work has assumed; but if that brightening could be achieved then a negative forcing that averages more than 3W / m ² should be possible.

This suggests that the aerosol indirect effect and in particular the increase of cloud cover can serve as a possible explanation to the observed changes in surface illumination.

With that as the median of a reasonable prior, the empirical evidence comes down on the side of a value less than 2; this is especially true if the prior includes negative values for ECS, which is possible on some of the much debated effects of clouds.

If the effects of CO2 on water vapor and clouds, or the influence of the sun, have been mis - estimated, then reversal of heating is possible.

We hear about «run - away» greenhouse effect on Venus, without any explanation of how this is possible with 100 % cloud cover if albedo and aerosols works as we think they do.

Several possible anthropogenic mechanisms are discussed; we speculate that aerosol - cloud interactions are the most likely cause of this weekend effect, but we do not rule out others.

The suite of possible impacts of aerosols through the modification of cloud properties is called «indirect effects».

A few groups pursued the study of possible mechanisms, for example elaborating theories of how changes in the atmosphere's electric circuit, which varies with the flux of cosmic rays, affected precipitation in the Arctic, Ram et al. (2009), or devising experiments that they hoped would show a direct and strong effect of cosmic rays on clouds, e.g., Svensmark et al. (2007)(which brought a strong press reaction but proved little).

Although the most advanced theoretical climate models still leave uncertainty, particularly about the sign and magnitudes of the effects, on GHG feedbacks, of some low - and high - clouds, a consensus began to develop that threats of resulting increases in global temperature — and the very large risks associated with their possible consequences — deserved substantial increase in attention.