Keywords: SummerSolstice65N-future.png chart en Past and future of daily average insolation at top of the atmosphere on the day of the summer solstice at 65 N latitude as derived from orbital parameters http //aom giss nasa gov/srorbpar html The current interglacial may last an unusually long time http //amper ped muni cz/gw/articles/html format/orb_forc html advocates we may need to wait 620 00 years for sufficient reduction in insolation to trigger an ice age Blue dot is current condition at 2 ky AD 2000 AD Own Incredio 2009-06-02 Astronomical diagrams |