Sentences with phrase «little changes in solar activity»

Even little changes in solar activity affect Earth's temperature — but climate change is by far the more pressing problem.

Not exact matches

A change in solar activity may also, for example, have contributed to the post Little Ice Age rise in global temperatures in the first half of the 20th Century.

This conclusion is, in retrospect, not too surprising; we've learned from satellite measurements that solar activity changes the brightness of the sun very little.

a) atmospheric CO2 from human activity is a major bause of observed warming in the 1980's and 1990's, c) that warming is overstated due to a number of factors including solar effects and measurement skew d) the data going back 150 years is of little reliability because it is clustered so heavily in northeast america and western europe rather than being global e) the global climate has been significantly shifting over the last thousand years, over the last ten thousand years, and over the last hundred thousand years; atmospheric CO2 levels did not drive those changes, and some of them were rapid.

«A new NASA computer climate model reinforces the long - standing theory that low solar activity could have changed the atmospheric circulation in the Northern Hemisphere from the 1400s to the 1700s and triggered a «Little Ice Age» in several regions including North America and Europe.»

Fluctuations in solar activity, including magnetic field - powered sunspots and solar flares, have been linked to past changes in climate, including, controversially, the Little Ice Age.

The Little Ice Age following the Medieval Warm Period ended due to a slight increase in solar output (changes in both thermohaline circulation and volcanic activity also contributed), but that increase has since reversed, and global temperature and solar activity are now going in opposite directions.

«Since irradiance variations are apparently minimal, changes in the Earth's climate that seem to be associated with changes in the level of solar activity — the Maunder Minimum and the Little Ice age for example — would then seem to be due to terrestrial responses to more subtle changes in the Sun's spectrum of radiative output.

This conclusion is, in retrospect, not too surprising; we've learned from satellite measurements that solar activity changes the brightness of the sun very little.

The BEST team found that greenhouse gases and volcanic eruptions could account for most of the observed temperature change, and suggest that the remainder of the variability is fairly consistent with the Atlantic Multidecadal Oscillation (AMO), an ocean cycle, and very little contribution from changes in solar activity (Figure 2).

While there is little change since 1980, solar activity now is higher than in the 1930's.