Sentences with phrase «effect of clouds depends»

The effect of clouds depends upon their type and the time of day.

Not exact matches

But it's not clear which effect predominates in the Arctic, he explained, since different types of clouds have different effects on climate, depending on whether they're made of ice or snow, whether they're thick or thin, and how high they sit in the atmosphere.

Which of these effects dominates depends on the type, distribution and altitude of the clouds — difficult for climate models to predict.

[Response: Note also that more low clouds would unambiguously mean a cooling effect, but more high clouds could lead to either a warming effect or a cooling effect, depending on the altitude of the clouds and the typical particle size in the GCR - induced clouds (if any).

A typical June Gloom morning consists of marine stratus clouds covering the coast of southern California, [4] extending a varying distance inland depending on the strength of the June Gloom effect that day.

Similarly, we have not been able to tell how much of the aerosol is capable of interacting with liquid or ice clouds (which depends on the different aerosols» affinity for water), and that impacts our assessment of the aerosol indirect effect.

[Response: These feedbacks are indeed modelled because they depend not on the trace greenhouse gas amounts, but on the variation of seasonal incoming solar radiation and effects like snow cover, water vapour amounts, clouds and the diurnal cycle.

The top panel shows the direct effects of the individual components, while the second panel attributes various indirect factors (associated with atmospheric chemistry, aerosol cloud interactions and albedo effects) and includes a model estimate of the «efficacy» of the forcing that depends on its spatial distribution.

During a sun cycle, the global cloud cover changes with + / - 2 %, good for a change of several W / m2 (depending on type of clouds and region), far higher than the effect of insolation change as result of the sun's energy variation.

First, for changing just CO2 forcing (or CH4, etc, or for a non-GHE forcing, such as a change in incident solar radiation, volcanic aerosols, etc.), there will be other GHE radiative «forcings» (feedbacks, though in the context of measuring their radiative effect, they can be described as having radiative forcings of x W / m2 per change in surface T), such as water vapor feedback, LW cloud feedback, and also, because GHE depends on the vertical temperature distribution, the lapse rate feedback (this generally refers to the tropospheric lapse rate, though changes in the position of the tropopause and changes in the stratospheric temperature could also be considered lapse - rate feedbacks for forcing at TOA; forcing at the tropopause with stratospheric adjustment takes some of that into account; sensitivity to forcing at the tropopause with stratospheric adjustment will generally be different from sensitivity to forcing without stratospheric adjustment and both will generally be different from forcing at TOA before stratospheric adjustment; forcing at TOA after stratospehric adjustment is identical to forcing at the tropopause after stratospheric adjustment).

A Lacis: You don't seem to appreciate the fact that water vapor and clouds are feedback effects, which means that the water vapor and cloud distributions depend directly on the local meteorological conditions, and are therefore constrained by the temperature dependence of the Clausius - Clapeyron relation.

You don't seem to appreciate the fact that water vapor and clouds are feedback effects, which means that the water vapor and cloud distributions depend directly on the local meteorological conditions, and are therefore constrained by the temperature dependence of the Clausius - Clapeyron relation.

This «climate sensitivity» not only depends on the direct effect of the GHGs themselves, but also on natural «climate feedback» mechanisms, particularly those due to clouds, water vapour, and snow cover.

Alec Rawls, on the other hand, points out that if his criticism of Chapter 7 of the AR5 is valid, and it has been accepted by the authors of Chapter 7, then the value of climate sensitivity estimated by Nic Lewis is a MAXIMUM value, which could be less depending on the effect of clouds.

Clouds have both a cooling effect and a warming effect, depending on the type of cloud.

Warmer winters (if they have lots of clouds... in winter thick clouds actually warm since there is less daylight and there cooling effect is now reversed to warming by retaining the heat... reflecting more IR than carbon dioxide can do, depending upon the type of cloud).

Which of these effects dominates depends on the type, distribution and altitude of the clouds — difficult for climate models to predict.

The cooling effect of clouds during the daytime depends very much on solar inclination as well as cloud optical thickness and cover.

It all depends on how you model the effects of clouds.

The effect of clouds in the daytime also depends upon cloud type and their height.

«There is nothing inherently wrong with defining aerosol changes to be a forcing, but it is practically impossible to accurately determine the aerosol forcing because it depends sensitively on the geographical and altitude distribution of aerosols, aerosol absorption, and aerosol cloud effects for each of several aerosol compositions.

Which effect predominates depends on the type and location of the clouds, with low clouds tending to cool more than they warm and high clouds tending to warm more than they cool.

«Nature is too complex, they (the authors) say, and depends on too many processes that are poorly understood or little monitored — whether the process is the feedback effects of cloud cover on global warming or the movement of grains of sand on a beach,» the Times article explained.

However, the actual magnitude of the effect depends on many other factors such as cloud change during readjustment.

Depending a bit how you weight the overlapping spectral absorptions of the different greenhouse gases the contribution of CO2 to the total greenhouse effect is about 20 % (with water vapour giving 50 % and 25 % for clouds, which we are sure that Allègre realises are made of condensate (liquid water and ice) and not vapour...).