Sentences with phrase «vostok ice core records»

He felt the Vostok ice core records of CO2 and temperature as presented in the movie were «a pretty good match,» and asked Chevron's counsel to comment on that.

My role at the meeting was mainly to hold up his one chart (of the Vostok ice core record, that then unfolded to the much higher projected CO2 levels — a chart the USGCRP [U.S. Global Change Research Office] office that I led at the time had helped the OSTP [White House Office of Science and Technology Policy] to get made for him).

The Vostok ice core record suggests CO2 levels have not been this high in the last 800,000 years, but if Salby is right, and temperature controls CO2, then CO2 levels ought to have been higher say, 130,000 years ago when the world was 2 — 4 degrees warmer than it is now.

According to Ruddiman (not a direct link to the literature), it was actually the release of methane from rice paddies and other forms of agriculture starting about 5,000 years ago that prevented the same sort of fairly rapid decay in temperature seen in the Vostok ice core record of previous interglacials.

Not exact matches

As yet, no one has touched the waters of a subglacial lake with so much as a drill bit, but a Russian group that has been coring ice over Lake Vostok to get ancient climate records is coming close.

How do Vostok, Dome C and other Antarctic and Greenland ice core records of historic levels of atmospheric CO2 compare with changes in THC and the AMO?

Similarly, I've got the Vostok ice core temperature record heading your way soon.

The ice core recovered from Vostok, Antarctica, records over 400,000 years of climate history.

So far, the Antarctic Vostok and EPICA Dome C ice cores have provided a composite record of atmospheric carbon dioxide levels over the past 650,000 years1, 2,3,4.

Here we use ice - core data from the Antarctic Vostok core to reconstruct a complete atmospheric carbon dioxide record for MIS 11.

The dD record is directly related to the temperature of most of the SH oceans, where the pecipitation of the Vostok ice core originated.

Records of CO2 (green) and temperature (blue) over the past 350,000 years from the Vostok ice core, after [Petit et al., 1999].

A very good example of Antarctic monitoring of global warming is an ice core two kilometres long and equivalent to 150,000 - year record of warmth, cold and warmth, that a French - Soviet drilling team at Vostok Station in central Antarctica produced in 1985.

The highest recorded value in the Vostok ice core is 298.7 ppmv which was for YBP 323,485.

But let's do a real rough check, based on the HadCRUT surface temperature record, the Mauna Loa measurement of atmospheric CO2 (after 1958) and the IPCC estimated CO2 level based on the Vostok ice cores (prior to 1958):

Then, in another study of the 420,000 - year Vostok ice - core record, Mudelsee (2001) concluded that variations in atmospheric CO2 concentration lagged variations in air temperature by 1,300 to 5,000 years. . .»

These do not address the issue of the distrust in ice core data resulting from the mismatch between the Vostok records and the Keeling Curve.

In 2008, research on Antarctic Vostok and EPICA Dome C ice cores revealed that methane clathrates were also present in deep Antarctic ice cores and record a history of atmospheric methane concentrations, dating to 800,000 years ago.

In particular, you could start with my articles on how we know that the CO2 rise is anthropogenic and why the GHG / temperature record in the Vostok ice cores does not imply that CO2 doesn't drive temperature.

Figure 1: Antarctic (Vostok) ice core records of temperature, CO2 (upper) and CH4 (lower) including time - scale adjustment to account for ice - gas age difference associated with the time for air bubbles to be sealed (Petit et al. 1999) and corrected for variations of climate in the water vapor source regions (Vimeux et al. 2002) as described in Supporting Text of Hansen and Sato (2004).

The Vostok ice core proxy record shows that there has been substantial variability in temperature near the south pole throughout the Holocene.