Sentences with phrase «through albedo changes»

It could be hiding in melting ice, or through albedo changes there may be no added heat at all.

Not exact matches

Their analysis reveals that the conversion of broadleaved forests to coniferous forests caused significant changes in evapotranspiration, the evaporation of water through leaves, and albedo, the amount of solar energy reflected from the Earth back into space.

A conceptual model is presented where, through a number of synergistic processes and positive feedbacks, changes in the ultraviolet / blue flux alter the dimethyl sulphide flux to the atmosphere, and in turn the number of cloud condensation nuclei, cloud albedo, and thus sea surface temperature.

All it demonstrates is that there is more than one causal factor, as is well known, with aerosols (from fossil fuels and volcanoes), land - use changes (through affecting CH$ and CO2 levels and albedo) and solar irradiance all playing a role.

But by changing the planet's albedo through a large seasonal variation, the total insolation is changed — more sunlight is reflected back into space without being absorbed as heat.

It is not that the polar regions are amplifying the warming «going on» at lower latitudes, it is that any warming going on AT THE POLES is amplified through inherent positive feedback processes AT THE POLES, and specifically this is primarily the ice - albedo positive feedback process whereby more open water leads to more warming leads to more open water, etc. *** «Climate model simulations have shown that ice albedo feedbacks associated with variations in snow and sea - ice coverage are a key factor in positive feedback mechanisms which amplify climate change at high northern latitudes...»

It's looking more and more like most climate change can be pegged to changes in solar output, either directly through additional warming or indirectly as decreases in solar output allow more cosmic rays to reach the atmosphere, causing increased cloud nucleation and therefore increasing the earth's albedo and reflecting more solar radiation.

The Milankovitch cycles are weak from the point of view of net solar forcing, but they affect the albedo through systematic changes in northern ice cover during the months when there is more daylight.

The Arctic provides an early indicator of global climate change through feedback systems associated with factors such as the high albedo of snow and ice [Holland and Bitz, 2003].

The cryosphere derives its importance to the climate system from a variety of effects, including its high reflectivity (albedo) for solar radiation, its low thermal conductivity, its large thermal inertia, its potential for affecting ocean circulation (through exchange of freshwater and heat) and atmospheric circulation (through topographic changes), its large potential for affecting sea level (through growth and melt of land ice), and its potential for affecting greenhouse gases (through changes in permafrost)(Chapter 4).

The natural variability affects also the albedo through changes in clouds.

Broad - scale changes in vegetation in general, and tree loss in particular, have pronounced effects on climate processes through biogeophysical mechanisms such as albedo, evapotranspiration (ET), and carbon dioxide exchange with the atmosphere [11].

Today because there is less energy coming from the sun through reduced incident solar energy and increased albedo from greater cloud formation the Earth is cooling and the OLR will change accordingly.

He takes climate change to be the norm of things and he accepts that humans are influencing climate through many factors and not just through emissions (e.g. how we change the albedo, the reflectivity, of the Earth's surface).

«his refusal to calculate a total year energy balance» - At this stage, no such calculation can be made, because I have calculated in detail only the changes in the incoming energy (the insolation) as a function of time - of - year and latitude; I have estimated also the effect upon the insolation absorption through a change in the Arctic albedo.

Really the big question for me, once aware of all in http://s24.postimg.org/rbbws9o85/overview.gif and much else, is whether or not coming cooling in the 21st century will end with a somewhat brief LIA - like event, or, via amplification of cooling through further albedo change from snow cover rise then, continue far longer into a non-little Ice Age afterwards..

At this point, it sounds like you're saying that no, mankind can not alter the albedo of the Earth through aerosols or soot or changes in land use, and no, greenhouse gases don't exist.

Vegetation cover changes caused by land use can alter regional and global climate through both biogeochemical (emissions of greenhouse gases and aerosols) and biogeophysical (albedo, evapotranspiration, and surface roughness) feedbacks with the atmosphere, with reverse effects following land abandonment, reforestation, and other vegetation recoveries (107).

Other potential causes of climate change include the depletion of stratospheric ozone in recent decades, again through human activities, and global changes in the surface reflectivity — or albedo — of the planet, as we modify the patterns of vegetation that cover the land.

In conclusion, a solar and heliospheric modulation of the cloud system would greatly contribute to climate change through an albedo modulation (see Eq.

We can also suppose that internal variability drives the TOA further through cloud albedo change.

The proposed explanation (see article: Evidence mounts that Maya did themselves in through deforestation) based on a slight change in albedo after deforestation and a corresponding decrease in solar energy available for convection does not make sense to us (although as we understand this work has not yet been published so we could not read it in detail).