Sentences with phrase «ice showing rapid»

Not exact matches

Evidence for these rapid warming events, on the order of 10 degrees Celsius in just 30 or so years, has shown up in the Greenland ice core, said Kim Cobb, the paper's second author.

«Detailed chemical measurements in Antarctic ice cores show that massive, halogen - rich eruptions from the West Antarctic Mt. Takahe volcano coincided exactly with the onset of the most rapid, widespread climate change in the Southern Hemisphere during the end of the last ice age and the start of increasing global greenhouse gas concentrations,» according to McConnell, who leads DRI's ultra-trace chemical ice core analytical laboratory.

Other recent research shows that without the channelized underbelly of the ice shelf and glacier, melting would be even more rapid.

Current changes in the ocean around Antarctica are disturbingly close to conditions 14,000 years ago that new research shows may have led to the rapid melting of Antarctic ice and an abrupt 3 - 4 metre rise in global sea level.

Main results show that ice cap melt on Greenland and / or Antarctica injects fresh water into oceans near respective continents causing rapid sea level rise and shuts down AMOC and / or SMOC leading to enormous global climate disruption, including massive storms.»

Our results thus show that, indeed, recent decades in West Antarctica, which have been characterized by very rapid warming, and very rapid loss of ice from the West Antarctic Ice Sheet, are highly unusuice from the West Antarctic Ice Sheet, are highly unusuIce Sheet, are highly unusual.

See the GISP2 Ice core charts of temperature for the last 10,000 years -LRB-- data available at WDC) where it shows that the normal cooling and warming mode is for a rapid temperature change of 1.5 to 2 degrees within a few hundred years.

Colaprete et al in Nature 2005 (subscription required) showed, using the Mars GCM, that the south polar climate is unstable due to the peculiar topography near the pole, and the current configuration is on the instability border; we therefore expect to see rapid changes in ice cover as the regional climate transits between the unstable states.

And a quick scan of those articles doesn't show much hint of predicting an ice age, or talking about rapid change.

«We showed that high - latitude wetlands are inactive during the ice age but can be rapidly reactivated during rapid warming events,» Fischer told environmentalresearchweb.

... According to the marine records, the Eemian interglacial (William: Eemain is the name of the last interglacial period, the current interglacial period is called the Holocene) ended with a rapid cooling event about 110,000 years ago (e.g., Imbrie et al., 1984; Martinson et al., 1987), which also shows up in ice cores and pollen records from across Eurasia.

Other recent research shows that without the channelized underbelly of the ice shelf and glacier, melting would be even more rapid.

In 1975 Wallace Broeker (the guy who first used the phrase «global warming», predicted a rapid transition to warming in the 1980s, caused by a combination of rapidly rising CO2 emissions and a natural temperature cycle (derived from work on Greenland ice cores at Camp Century) which showed a rapid warming phase up to 1940, followed by the cooling phase which was attenuated by CO2.

Sea ice extent also continued its rapid decline with the Japanese Space Agency showing 4,800,000 square kilometers of sea ice extent, about equal to the third lowest measurement set in 2008.

The latest movie movie (5) shows the rapid retreat of arctic sea ice in summer 2007 and 2008.

-LSB-...] In fact, the global sea - ice record shows virtually no change throughout the past 30 years, because the quite rapid loss of Arctic sea ice since the satellites were watching has been matched by a near - equally rapid gain of Antarctic sea ice.

The Arctic (North Pole) has shown the most rapid rate of warming, with dramatic effects such as shrinking of this region's glaciers, ice caps, ice sheets, and permafrost.

exactly... i recall seeing a graph produced from ice core samples in which the CO2 content of thousands of years past was measured against tree ring data... what it showed was CO2 levels rising 300 years after rapid vegetative growth (natural warming) and incidently the PPM of CO2 measured higher than current levels.

This is based on the ice core record, but there are other measures of CO2 that strongly disagree with the ice core record: for example, the leaf stomata record generated by Wagner et al shows significant variation in the Holocene period, indicating that rapid fluctuations do occur and that 370ppm is «high» but not outside typical variability.

In their 2015 Science paper, Rhodes et al. presented an ice core methane record of unprecedented resolution, which showed rapid emissions of methane in response to Heinrich events.

The contributions from ice sheets include the contributions from ice - sheet rapid dynamical change, which are also shown separately.

In fact, one study showed that warming in the western Arctic owing to the rapid retreat of sea ice is 3.5 times greater than at other times and places not affected by dramatic retreat.16 This warming has been known to affect up to 932 square miles (1,500 square kilometers), with the effect peaking in autumn.16

Ice core analysis by Dansgaard's group, confirmed by the Americans, showed rapid oscillations of temperature repeatedly at irregular intervals throughout the last glacial period.

Satellite images — comparing average ice loss from 2003 to 2007 with the 2003 - 2009 average — show rapid loss around the perimeter of the ice sheet, reflecting the melting of outlet glaciers.10

Then in the 80s, the ice cores showed rapid change in the past, not as rapid as we are inducing this century, but change didn't have to take millennia as was once thought.

Simple climate models show that, when the Earth becomes cold enough for the ice cover to approach the tropics, the amplifying albedo feedback causes rapid ice growth to the Equator: «snowball Earth» conditions [100].

Measurements of air in ice cores show that for the past 800,000 years up until the 20th century, the atmospheric CO2 concentration stayed within the range 170 to 300 parts per million (ppm), making the recent rapid rise to nearly 400 ppm over 200 years particularly remarkable [figure 3].

Measurements of air in ice cores show that for the past 800,000 years up until the 20th century, the atmospheric CO2 concentration stayed within the range 170 to 300 parts per million (ppm), making the recent rapid rise to nearly 400 ppm over 200 years particularly remarkable (see Figure 3).

The models (and there are many) have numerous common behaviours — they all cool following a big volcanic eruption, like that at Mount Pinatubo in 1991; they all warm as levels of greenhouse gases are increased; they show the same relationships connecting water vapour and temperature that we see in observations; and they can quantify how the giant lakes left over from the Ice Age may have caused a rapid cooling across the North Atlantic as they drained and changed ocean circulation patterns.

shows a rapid, and strong (even surprising for how strong it is this year) growing trend in Arctic ice since 2007.

The 30 % concentration graph, the DMi graph, one that is weightier than the 15 % because it shows what is happening at the heart of the Arctic, and not just what is happening (for the moment) around the circumference of the ice, shows a rapid, and strong (even surprising for how strong it is this year) growing trend in Arctic ice since 2007.