kyr

According to IPCC Jansen et al., 2007, “it is possible to derive time series of atmospheric trace gases and aerosols for the period from about 650 kyr thousand years to the present from air trapped in polar ice and from the ice itself.”

Eli can retire 1 EliRabett 2010

According to IPCC Jansen et al., 2007, “it is possible to derive time series of atmospheric trace gases and aerosols for the period from about 650 kyr thousand years to the present from air trapped in polar ice and from the ice itself.”

Archive 2010-03-01 EliRabett 2010

Under a natural CO2 regime (i.e., with the global temperature-CO2 correlation continuing as in the Vostok and EPICA Dome C ice cores), the next glacial period would not be expected to start within the next 30 kyr (Loutre and Berger, 2000; Berger and Loutre, 2002; EPICA Community Members, 2004).

Archive 2009-01-01 EliRabett 2009

Thus the last termination (14.7 – 11.7 kyr) [kyr = thousand years] displays extreme temperature changes on the scale of several degrees C in a few years (Steffensen et al., 2008) to decade scale (Alley, 2003; Kobashi et al., 2008), testifying to an extreme sensitivity of the atmosphere and the possibility of climate impasse tipping points.

The Price of the Earth 2009

Given that current low orbital eccentricity will persist over the next tens of thousand years, the effects of precession are minimised, and extremely cold northern summer orbital configurations like that of the last glacial initiation at 116 ka will not take place for at least 30 kyr Box 6.1.

Rabett Run EliRabett 2009

It is very unlikely that the Earth would naturally enter another ice age for at least 30 kyr.

Archive 2009-01-01 EliRabett 2009

Comparisons between anthropocene (1750-2005), last glacial termination (20 "" 11.7 kyr) and Pliocene (~3 Ma) CO2 levels, climate forcings, mean global temperatures and sea levels.

GLOBE WARMING TOWARD TWO DEGREES CELSIUS: THE EU'S UPPER LIMIT 2009

The role of North Atlantic climate change between 70 and 130 kyr ago.

Arctic climate variability prior to 100 years BP 2009

The 8.2 kyr BP event simulated by a global atmosphere-sea-ice-ocean model.

Late-Quaternary changes in arctic terrestrial ecosystems, climate, and ultraviolet radiation levels 2009

Given that current low orbital eccentricity will persist over the next tens of thousand years, the effects of precession are minimised, and extremely cold northern summer orbital configurations like that of the last glacial initiation at 116 ka will not take place for at least 30 kyr Box 6.1.

Archive 2009-01-01 EliRabett 2009