Sentences with phrase «in ice core data»

Five to seven years ago, climate scientists thought they had found two such smoking guns: one in ice core data going back 650,000 years, and one in Mann's hockey stick using temperature proxy data going back 1,000 years.

Much farther down the curve, there are some peaks for Milankovich frequencies in the ice core data segment.

As far as # 2 goes, ice core data is used for recent paleoclimate data on CO2 concentration, nothing much earlier than about 1000 years ago, because of the errors inherent in the ice core data.

You can see this in the Ice Core Data.

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.

Wrhoward, 8/25/14 @ 7:47 pm, corrected 8/26/14 @ 12:45 am, makes a sweeping accusation that the statements in my fourth reason for having confidence in ice core data «are simply not correct».

Milankovitch removed 40 watts per meter squared from the Northern Hemisphere, above 60 degrees and added 40 watts per meter squared to the Southern hemisphere below 60 degrees over the past ten thousand years and the temperatures recorded in the ice core data in Greenland and Antarctic did stay in the same bounds.

And if Middleton's minimum closure time estimate of 30 years is correct then fluctuations similar to the rise in the Mauna Loa data would be more than halved in the ice core data.

That shows up in the ice core data for Greenland and Antarctic.

This ice has a cycle that is very clearly documented in the ice core data and other proxies.

Early in my research I came across the topic of CO2 lagging behind the temperature data in the ice core data.

When I point out that in the ice core data shows that temperature rises 800-1000 years before CO2, I am met with blank stares, or I am asked to prove it I can cite at least 6 peer reviewed study and cite the page number in the IPCC report where that is stated.

That is in the Ice Core Data.

The evidence for this is in the ice core data.

The reason is that by the time of the movie, better instrumentation and lab procedure had shown that temperature increases in the ice core data actually preceeded CO2 increases by 800 or more years.

This cycle is clearly in the ice core data for Greenland and the Antarctic.

Mind you, just about everything that I think I know about the future of climate is based on the temperature history that is in the ice core data.

We are at or near the upper boundary of temperature as shown in the ice core data for the past ten thousand years.

These large CO2 deserts cover the northern ice sheets with dust, as is recorded in the ice core data, and the ice sheet albedo is lowered sufficiently so that the next insolation maxima can melt the ice sheets.

Consequently, atmospheric CO2 is increasing ten times faster than any rate detected in ice core data over the last 22,000 years.

Is the aforementioned ~ 9 month lag in CO2 after temperature consistent with the ~ 600 year lag in CO2 after temperature observed in ice core data?

This is consistent with the ~ 600 year lag of CO2 after temperature in the ice core data (Different cycle lengths have different inherent lag times).

That would change if the Quilotoa eruption also showed up in ice core data at around 20 + years later than the still - a-bit mysterious 1258 CE event.

What the medical «experts» have missed is the fact that someone receiving a diagnosis of cancer will tend to smoke even more in an effort to calm himself down, setting up a feedback similar to what we see in the ice core data.

Global cooling after volcanic eruptions has been recorded in ice core data and thermometers,: 1809, 1815, 1883, 1980 etc. and others.

Not exact matches

Using data from 16 ice cores collected from widely spaced locations around the Antarctic continent, including the South Pole, a group led by Joe McConnell of the Desert Research Institute (DRI) in Reno, Nevada, created the most accurate and precise reconstruction to date of lead pollution over Earth's southernmost continent.

It is much cheaper to test ice cores, which capture years of data in one core, than to do repeated air sampling over time.

«In any case, the results of our model study give a clear indication that the bipolar variability of sulfate deposits must be taken into consideration if the traces of large volcanic eruptions are to be deduced from ice cores,» says Dr. Krüger, «Several research groups that deal with this issue have already contacted us to verify their data through our model results.»

Data from the new ice core array illustrates that Antarctic lead concentrations reached a peak in 1900 and remained high until the late 1920s, with brief declines during the Great Depression and the end of World War II.

To get to the bottom of things, he mapped the ages and locations of 1,323 woolly mammoth remains and 576 archaeological sites, and he merged them with data from plant and pollen records, and climate change information from ice cores in Greenland.

The team, led by Dr Kira Rehfeld and Dr Thomas Laepple, compared the Greenland data with that from sediments collected in several ocean regions around the globe, as well as from ice - core samples gathered in the Antarctic.

Using data from a 3053 - meter - long core of ice and bedrock collected from the center of the island in 1993, Schaefer's team has found valuable clues to what the period held.

The ice core data also shows that CO2 and methane levels have been remarkably stable in Antarctica — varying between 300 ppm and 180 ppm — over that entire period and that shifts in levels of these gases took at least 800 years, compared to the roughly 100 years in which humans have increased atmospheric CO2 levels to their present high.

Ice core data from the poles clearly show dramatic swings in average global temperatures, but researchers still don't know how local ecosystems reacted to the change.

However, the carbon dioxide concentration in the atmosphere — roughly 290 ppm (parts per million)-- was ca. 110 ppm lower than the current level, as ice core data from the Antarctic shows.

Ambrose also cites Greenland ice core data that suggest sulfur stuck around in the atmosphere longer than just a few years and that Earth had already entered a cold snap.

The study, by an international team of scientists led by the University of Cambridge, examined how changes in ocean currents in the Atlantic Ocean were related to climate conditions in the northern hemisphere during the last ice age, by examining data from ice cores and fossilised plankton shells.

Analysing new data from marine sediment cores taken from the deep South Atlantic, between the southern tip of South America and the southern tip of Africa, the researchers discovered that during the last ice age, deep ocean currents in the South Atlantic varied essentially in unison with Greenland ice - core temperatures.

In order to predict future changes in climate, scientists verify and refine their models against paleoclimate data from the ice cores Taylor and others pull uIn order to predict future changes in climate, scientists verify and refine their models against paleoclimate data from the ice cores Taylor and others pull uin climate, scientists verify and refine their models against paleoclimate data from the ice cores Taylor and others pull up.

These events, known as Dansgaard - Oeschger events, were first identified in data from Greenland ice cores in the early 1990s, and had far - reaching impacts on the global climate.

Patrick Crill, an American biogeochemist at Stockholm University, says ice core data from the past 800,000 years, covering about eight glacial and interglacial cycles, show atmospheric methane concentrations between 350 and 800 parts per billion in glacial and interglacial periods, respectively.

The paleoclimate data, which included mainly changes in the oxygen isotopes of the calcium carbonate deposits, were then compared to similar records from other caves, ice cores, and sediment records as well as model predictions for water availability in the Middle East and west central Asia today and into the future.

All data are from a depth of 580 meters in a sample from the WAIS Divide ice core.

For example see figure 1 in Alley's paper that shows the GISP2 ice core data (The wiggle lines indicate a massive increase in sea salt and dust that is being transported to the Greenland Ice sheet, as compared to the current climaice core data (The wiggle lines indicate a massive increase in sea salt and dust that is being transported to the Greenland Ice sheet, as compared to the current climaIce sheet, as compared to the current climate.

These data are the accumulation rate history for the WAIS Divide ice core in central West Antarctica.

In this paper, we use the Spitzer c2d ice survey, complimented with data sets on ices in cloud cores and high - mass protostars, to determine standard ice abundances and to present a coherent picture of the evolution of ices during low - and high - mass star formatioIn this paper, we use the Spitzer c2d ice survey, complimented with data sets on ices in cloud cores and high - mass protostars, to determine standard ice abundances and to present a coherent picture of the evolution of ices during low - and high - mass star formatioin cloud cores and high - mass protostars, to determine standard ice abundances and to present a coherent picture of the evolution of ices during low - and high - mass star formation.

[Further Response: Our estimates of the magnitude of future global warming do not come from ice core data, and do not depend on it in any way.

In summary, the ice core data in no way contradict our understanding of the relationship between CO2 and temperature, and there is nothing fundamentally wrong with what Gore says in the filIn summary, the ice core data in no way contradict our understanding of the relationship between CO2 and temperature, and there is nothing fundamentally wrong with what Gore says in the filin no way contradict our understanding of the relationship between CO2 and temperature, and there is nothing fundamentally wrong with what Gore says in the filin the film.

Indeed, Gore could have used the ice core data to make an additional and stronger point, which is that these data provide a nice independent test of climate sensitivity, which gives a result in excellent agreement with results from models.

That the ice core data do not change the answer demonstrates that there is not very likely anything missing in our understanding.