Sentences with phrase «back ice samples»

Not exact matches

for example... you can go back in ice core samples as far as 800,000 years, and still locked in the ice is a tiny amount of the atmoshpere from that time, telliing us volumes of information.

Doc We have ice core samples going back 800,000 years.

Also, Ice core samples that go back as far as 800,000 years have atmospheric gasses trapped within, so give a source to determine the make - up of the air, showing consistant level of carbon... directly refuting the AiG site that claimns the air has changed.

Farooqi drove to London, took more blood samples, packed them in a bucket of ice, and sped back to Cambridge.

But the 100 ice core samples in Greenland and Antarctica going back 800,000 years including over two dozen inter-glacials when large differences in CO2 levels and temperatures were measured.

Data on greenhouse gas abundances going back beyond a million years, that is, beyond the reach of antarctic ice cores, are still rather uncertain, but analysis of geological samples suggests that the warm ice - free periods coincide with high atmospheric CO2 levels.

«It potentially does,» admits Jones, but says that analyses using other methods — proxy temperature markers from ice core samples, for example — still show much the same temperature change over the past 1,000 years, backing up Mann's hockey stick.

Turn the lights out go back to the stone age climate change has been changing for thousands of years look at ice core samples.

Scientists dig deep into the rock and sand of the sea floor to sample Earth's climate history many millions of years ago, since the oldest ice cores go back only 850,000 years.

The facility, which has some ice samples going as far back as 1958, is meant to be a permanent repository, but it's running out of room.

And scientists can sample ice cores, permafrost records, and tree rings to make some assumptions about the sea ice extent going back 1,500 years.

SD: We have actual samples of air from ice cores going back over 800,000 years, and CO2 has never been this high in that time.

«They're talking about the instrumental data which is unaltered — but they're talking about proxy data going further back in time, a thousand years, and it's just about how you add on the last few years, because when you get proxy data you sample things like tree rings and ice cores, and they don't always have the last few years.

He said scientists have been able to correlate changes in atmospheric temperature with changes in levels of carbon dioxide going back more than 500,000 years by analyzing ice core samples and the CO2 bubbles trapped inside.

More importantly, in all the «small cycle» warming seen in the past millions of years, based on data taken from samples of ice going back that far, we have never seen warming ramping up this far.

Ice core samples become very hard to analyze the further one goes back in time, so I am not sure exactly how good it is for determining climate in the deep past.