Sentences with phrase «small changes in insolation»

This theory predicts (extremely accurately as it happens) that known variations in the orbit of the Earth bring us closer or move us further away from the sun creating really quite small changes in insolation.

Small changes in insolation driven by changes in the Earth's orbit can push the planet into or out of an ice age through the planet's «climate feedback» mechanisms.

The small changes in insolation will cause earlier and more extensive spring melting of Arctic ice, and indeed less ice formation over winter because northern winters are now shorter and milder than they were in 1750, due to apsidal precession.

This is similar to the error they make when they claim that greenhouse gases can produce temperature increases 3 - 5 times that of the direct radiative effects of doubling CO2 (through the action of non-linear feedbacks), but deny that small changes in insolation can produce effects that are much larger than can predicted from the original forcing.

Not exact matches

Changes in insolation are also thought to have arisen from small variations in solar irradiance, although both timing and magnitude of past solar radiation fluctuations are highly uncertain (see Chapters 2 and 6; Lean et al., 2002; Gray et al., 2005; Foukal et al., 2006).

The ice age orbital correlation is old knowledge; there all those years ago in my high school geology text *, along with the observation that the insolation change is way too small to provide a simplistic explanation.

Re 37 Kevin McKinney — actually, orbitally - forced global annual average changes in TOA solar insolation are very small (in the case of Earth) and depend only on variations in eccentricity (setting aside the idea that there is a plane of dust and the plane of the orbit has a significant effect that way — heard the idea awhile ago, not sure there's much to support it?).

Changes in eccentricity alone have limited impacts on insolation, due to the resulting very small changes in the distance between the Sun and theChanges in eccentricity alone have limited impacts on insolation, due to the resulting very small changes in the distance between the Sun and thechanges in the distance between the Sun and the Earth.

There are Milankovitch cycles of around 21,000, 40,000, 100,000, and 400,000 years — in the 100,000 year cycle involving orbital eccentricities the change in insolation is much smaller than with the 21,000 and 40,000 year cycles.

Small changes in northern summer insolation can not in itself transform the planet.

However, the change in incoming solar radiation — insolation — at this timescale is small, and therefore difficult to reconcile with the amplitude of the glacial cycles.

To compare this with AGW, AR5 Table AII.2 yields an annual average year - round and global forcing increase averaged over the last 30 years of +0.026 Wm ^ -2 / year, many times higher than the part - year, part - globe CSI which is also a small part of the insolation changes over the last 1,000 years, an effect which is adjudged, with or without any omission, to be insignificant in comparison to AGW.

Those for Summer and Winter are not, but the seasonal change in insolation for those times of year is small.

Much higher above I mentioned the possibility — but again the change in insolation over the Holocene (even at 65N) is very small.