Sun drives almost every aspect of our world's climate system and makes possible life as we know it.
changing Earth's exposure to sunlight forces climate to change. According to scientists' models of Earth's orbit and orientation toward the Sun indicate that our world should be just beginning to enter a new period of cooling -- perhaps the next ice age.
Siten aletaan tarinoida ympäripyöreitä myös aerosoleista ja ihmisen osuudesta jne, tiiätte kyllä mihin mahdollisesti johtaa tämä,
-70 luvun toisintoon teeseineen, eli ihmisen aiheuttamaan jääkausialaarmiin jota heikko aurinko nyt vahvistaa...
http://science.nasa.gov/earth-science/b ... riability/
Other important forcings of Earth's climate system include such "variables" as clouds, airborne particulate matter, and surface brightness. Each of these varying features of Earth's environment has the capacity to exceed the warming influence of greenhouse gases and cause our world to cool. For example, increased cloudiness would give more shade to the surface while reflecting more sunlight back to space. Increased airborne particles (or "aerosols") would scatter and reflect more sunlight back to space, thereby cooling the surface. Major volcanic eruptions (such as that of Mt. Pinatubo in 1992) can inject so much aerosol into the atmosphere that, as it spreads around the globe, it reduces sunlight and cause Earth to cool. Likewise, increasing the surface area of highly reflective surface types, such as ice sheets, reflects greater amounts of sunlight back to space and causes Earth to cool.