Sentences with phrase «greater changes in solar radiation»

If greater changes in solar radiation occur — as seems probable based on what is known of climate and solar activity in the past — the Sun needs to be considered in long - term climate projections.

Not exact matches

Warming is greater in the northern hemisphere, over land, and at night, greater in the troposphere and cooler in the stratosphere, all indications of greenhouse warming rather than warming from solar radiation changes or other «natural» causes.

The great thing is that, since we can make good estimates of the changes in solar radiation, changes in the Earth's albedo due to melting ice, and changes in atmospheric CO2 concentration during the ice ages, scientists can directly calculate the sensitivity of the climate to changes in the atmospheric CO2 concentration.

Three - dimensional (3D) planetary general circulation models (GCMs) derived from the models that we use to project 21st Century changes in Earth's climate can now be used to address outstanding questions about how Earth became and remained habitable despite wide swings in solar radiation, atmospheric chemistry, and other climate forcings; whether these different eras of habitability manifest themselves in signals that might be detected from a great distance; whether and how planets such as Mars and Venus were habitable in the past; how common habitable exoplanets might be; and how we might best answer this question with future observations.