Sentences with phrase «vostok nafta»

So the prediction from Vostok is for a natural temperature response about the same as IPCC predicts for man doubling atmospheric CO2 content after turning off the on - going natural processes.

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

Despite multiple careful studies, uncertainties in the ice — gas age differences for the Vostok ice core remain of the order of 1 kyr.

Studying the Vostok data carefully during the interglacial period identifies that CO2 was always «short» of «equilibrium» and this explains the development from C3 to C4 species.

But in the near by Vostok location, for many centuries, there has been absolutely no sign of the MWP?

From the Vostok Ice Core, it is clear that the Earth is subjected to many levels of NATURAL «warmings»: JUST one «category «10» warming of 9 + with an ~ 12000y duration every 120,000 y; several category «6» warmings of 5 - 6C peaking ~ every 7500y after each category «10» event; many category «3» warmings of 2 - 3C peaking ~ every 5000y; and a multitude of category «2» warmings of 1 - 2C peaking on decade and century scales.

Global with South Pole; but Vostok doubted.

My other point to him at the time was that the Industrial Revolution was actually quite limited and that it wasn't until the forties last century that industry spread, but he ignored this as he ignored the email about getting rid of the MWP and LIA and when I found the Vostok data, and began to appreciate the great cycles within our Ice Age, he dismissed these too and came back to the claim that our temps had been «flat normal» and our fault that we were changing this by our increased production of carbon dioxide as the Hockey Stick showed.

The current global warming signal is therefore the slowest and among the smallest in comparison with all HRWEs in the Vostok record, although the current warming signal could in the coming decades yet reach the level of past HRWEs for some parameters.

The blue graph (vostok) has approx 23 years between data points.

To that issue, I have visited the Vostok Ice Cores data.

Before 1850 the atmosphere contained some 600 GtC (gigatonnes of carbon), an amount that the Vostok ice cores showed had not previously changed significantly for several thousand years.

* An exponential fit hindcasts absurdly, namely to zero when the ice core data from Vostok etc. would suggest 280 - 290 as a more reasonable hindcasting target.

«The coldest surface air temperature ever measured on Earth was at the Vostok Station in 1983, a reading of T = -89.2 C (or 184K), which is reasonably close to CO2 snow deposition temperature of 133K (1 bar)...»

To be consistent you should object to the Vostok ice - core data on the ground that it smooths out anything faster than a couple of centuries.

BioCab.org — Click the pic to view at source 2,000 Years — «Loehle and McCulloch 2008 Graph Background Craig Loehle, Ph.D. and J. 2,000 Years — J. J. 2,000 Years Christiansen 2,100 Years — Law Dome O18 Climate Audit — Law Dome — Click the pic to view at source 2,500 Years — GISP2 — Alley, 2000 Photobucket.com — Click the pic to view at source 3,000 Years — GISP2 — Alley, 2000, Moberg, Keigwin & HadCRUT3 10,000 Years — Vostok E. Lindzen, Soon and Spencer debunked?

It is all very well for Agee et al to talk about Vostok, but they suggest that the plants go on the coast.

The coldest surface air temperature ever measured on Earth was at the Vostok Station in 1983, a reading of T = -89.2 C (or 184K), which is reasonably close to CO2 snow deposition temperature of 133K (1 bar) or 152K (10 bars).

280 ppmv is the traditional value, the Vostok ice cores registered 284.7 in 342 BC (Petit et al, Nature v. 399 (6735) pp 429 - 436, 1999), and I used 280 when fitting the CDIAC data directly to the Keeling curve here on the assumption that 44 % of emissions remained in the atmosphere.

Carbon dioxide measurements on Dome C ice, focusing on the interval 390 to 650 kyr before present, bp (2,700 — 3,060 m) 4, confirmed the strong coupling between CO2 and Antarctic temperature found1 in the Vostok ice core for the past 420 kyr.

From Peru: You've complimented me by sharing my project (the vostok viewer) on this blog, but I should add that that project began here a couple years ago when I asked Tamino to define climatic precession.

A site that show the astronomical cycles, solar insolation, CO2, CH4 and temperature record is the Vostok Viewer:

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

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.

They also showed a range in CO2 about 30 % smaller (180 to 260 p.p.m.v.) than for the Vostok interval (180 to 300 p.p.m.v.) related to cooler interglacials in the earlier period10.

Ritz, C., Rommeleare, V. & Dumas, C. Modeling the evolution of Antarctic ice sheet over the last 420,000 years: implications for altitude changes in the Vostok region.

Pepin, L., Raynaud, D., Barnola, J. M. & Loutre, M. F. Hemispheric roles of climate forcings during glacial — interglacial transitions as deduced from the Vostok record and LLN - 2D model experiments.

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

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).

He used to just unfold a plot of the Vostok results, and now he goes up in a hydraulic lift, but, yes, I think it is fairly done.

Vostok Data The Vostok ice core sample was obtained by drilling down into the ice above Lake Vostok to a depth of 3623m.

What will be presented in this article is an in depth look at data from research done at the Vostok station in the Antarctic.

The graph built from the Vostok ice core data shows us the relationship between CO2 in the atmosphere and global temperature.

See the Vostok plot here:

The 420,000 years Vostok ice core also shows a ratio of 8 ppmv / °C, a little more than the 3 ppmv / °C which is seen in the modulation of the CO2 increase today.

This process has been happening for the past 420,000 years according to the data collected at Vostok.

I have spent more than my share of time analyzing paleo data such as Vostok because it is so dang interesting.

We understand from Vostok ice core data that there is a ~ 600 year lag in CO2 after temperature.

Contrary to current belief today, the Vostok data shows us that CO2 increases lag behind temperature increases by about 800 years.

The Vostok core clearly indicates that when the temperature reaches 2 °C a mechanism kicks in which sets the temperature falling again and initiates an ice - age.

If we look to roughly 325,000 years ago, based on the Vostok data above, we see that Earth was at the peak of a warm interglacial period.

«Climate and Atmospheric History of the Past 420,000 Years from the Vostok Ice Core, Antarctica.»

The Vostok ice core for the Eemian shows a 100ppm rise in CO2 (starting at 190ppm) after temperature started to rise (not the other way around).

Since the data from Vostok is a data point every 20 years or so it is important to compare to 20 year averages.

The Vostok data going back 450,000 years shows that CO2 lags temperature by several hundred years, so was obviously not the «driver».

Mauna Loa has only been in operation since 1959, but Vostok ice core estimates (cited by IPCC) put the CO2 level at around 280 ppmv in 1850.

The lag between movements in temperature and movements in CO2 levels may even between 800 — 1000 years if Vostok ice core studies are correct.

I worked the standard deviation of a 10,000 year period from the Vostok ice core.

In the websites from the Siple and Vostok sites you can find that it takes 60 - 80 meters for the snow (fern) to be compressed to form ice which has bubbles trapped.

You can't derive that purely from the Vostok curves.