Sentences with phrase «higher during interglacial»

Not exact matches

During the last interglacial, sea levels were about 3 - 9 meters higher than they are now.

A recent study by Robert Kopp at Princeton University (Nature, DOI: 10.1038 / nature08686) suggests sea levels were 8 to 9 metres higher than now during the last interglacial, in part due to the west Antarctic ice sheet melting.

Previous estimates suggested that peak temperatures during the warmest interglacial periods — which occurred at around 125,000, 240,000 and 340,000 years ago — were about three degrees higher than they are today.

Other studies indicate that the peak sea level during the latest interglacial was a few metres higher than today, implying that peak temperatures were higher.

Finally, deep - sea bottom temperatures have also exhibited systematic glacial - low, interglacial - high patterns during the Plio - Pleistocene (Dwyer et al., 1995; Martin et al., 2002; Sosdian and Rosenthal, 2009; Elderfield et al., 2010).

ABSTRACT BODY: The high - latitude, shallow ESAS has been alternately subaerial and inundated with seawater during glacial and interglacial periods respectively.

The difference between the last glacial maximum (20,000 yrs ago) and today is about 120 meters (400 ft), but the high levels during some of the warmest interglacials were 6 - 9 meters (20 to 30 feet) higher than today.

For example, Hansen & Sato argued that since GAT during the Eemian (last interglacial before the present) was only slightly higher (less than 1 degree C) and sea levels 4 - 6 meters higher, a 2 degree rise in GAT in the near future will result flooding very quickly.

During the previous interglacial, the Eemian, temperatures were about 2 K warmer than now and the sea highstand was 4 — 6 meters higher than the current level, depending upon location measured.

The temperature gradient between equator and poles is higher during ice ages than during interglacials...

There is lots of evidence out there which suggests that rapid mluti - meter SLR does occur: High rates of sea - level rise during the last interglacial period http://www.nature.com/ngeo/journal/v1/n1/full/ngeo.2007.28.html

The highest values are encountered during several past interglacial periods (stage 19, about 800,000 years ago; stage 9.3, about 300,000 years ago).

In fact, the literature is pretty clear that the better analog for the Holocene is actually MIS11 (Droxler), around 400 kya, when orbital eccentricity was quite low as it is today, resulting in a longer interglacial (Berger) with sea levels higher than during the Eemian.

The 12 — 21 cm higher sea level stand during the MWP is likely the highest sea level since the previous interglacial period 110,000 years ago, and was produced by an extended period of warming, allowing time for glaciers and thermal expansion to reach a climatic balance.

During the last interglacial before the present the sea level was probably 7 - 8 or more meters higher: Kopp et al. (2009); see also Dutton and Lambeck (2012), Dutton et al. (2015).

Global average sea level was likely between 4 and 6 m higher during the last interglacial period, about 125,000 years ago, than during the 20th century, mainly due to the retreat of polar ice -LRB-

Global average sea level was likely between 4 and 6 m higher during the last interglacial period, about 125,000 years ago, than during the 20th century, mainly due to the retreat of polar ice (Figure TS.21).

And during the Eemian, the previous interglacial, temperatures were 1 - 2 degr.C higher than today, thus a constant increase of 5 ppmv / yr during about 15,000 years would give an increase of 75,000 ppmv CO2... That is physically impossible.

At the beginning of MIS 19, CO2 attains its local maximum of 261 p.p.m.v., which is similar to the highest levels during MIS 13 and 15 but substantially lower than during the four recent interglacials.

During the Eemian (the interglacial before this one about 100,000 or so years ago) sea level was about 9 meters higher than now, presumably because the Earth was warmer than now and there was then enough water.

Quantitatively, Vasskog et al. estimate that during this time (the prior interglacial) the GrIS was «probably between ~ 7 and 60 % smaller than at present,» and that that melting contributed to a rise in global sea level of «between 0.5 and 4.2 m.» Thus, in comparing the present interglacial to the past interglacial, atmospheric CO2 concentrations are currently 30 % higher, global temperatures are 1.5 - 2 °C cooler, GrIS volume is from 7 - 67 % larger, and global sea level is at least 0.5 - 4.2 m lower, none of which observations signal catastrophe for the present.

In sum, the conclusion of the Kopp study that 20th century sea level rise was extremely likely faster than during any of the 27 previous centuries is not substantiated, although there is little doubt that sea levels are higher than they have been since the last interglacial period, the Eemian, about 115,000 to 130,000 years ago.

There is very high confidence that maximum global mean sea level during the last interglacial period (~ 129 to 116 ka) was, for several thousand years, at least 5 m higher than present and high confidence that it did not exceed 10 m above present, implying substantial contributions from the Greenland and Antarctic ice sheets.

The authors find «a relatively low contribution to Last Interglacial sea level rise from Greenland melting... The resistance of Greenland to thaw despite much higher temperatures [8 C] during the last interglacial led warmist blogger Andy Rivkin of the NY Times to remark,»... Greenland doesn't need «sInterglacial sea level rise from Greenland melting... The resistance of Greenland to thaw despite much higher temperatures [8 C] during the last interglacial led warmist blogger Andy Rivkin of the NY Times to remark,»... Greenland doesn't need «sinterglacial led warmist blogger Andy Rivkin of the NY Times to remark,»... Greenland doesn't need «saving»

Sea level was 3 to 5 meters higher than it is now during the previous interglacial (Sangamonian / Eemian ~ 130 kya).

Temporal and spatial structure of multi-millennial temperature changes at high latitudes during the Last Interglacial.

Persistent influence of ice sheet melting on high northern latitude climate during the early Last Interglacial.

During the last three such warm (interglacial) periods, temperatures at high latitudes were as much as 5 degrees warmer than today's.

During the Eemian interglacial some 125K years ago, temperatures were 2 or 3 degrees higher and sea levels were 4 to 7 metres higher.

During the interglacials there were higher temperatures without any kind of «runaway» disturbance....

[31] About Greenland IPCC SPM § B4 states: «we can say with a very high confidence level that the maximum mean sea level during the last interglacial (129 ka to 116 ka) has been at least 5 m above today's seal level....

During the last interglacial about 125,000 years ago, when global average temperatures were not substantially warmer than at present, sea level was 4 - 6 meters (about 13 to 20 feet) higher than at present.

Recent Earth history has featured quasi -100,000-y, glacial − interglacial climate cycles with lower / higher temperatures and greenhouse gas concentrations during glacials / interglacials.

ferd, Are you suggesting that the true CO2 level during the last interglacial (and during the warmer early part of the Holocene) was actually higher than today?

CO2 minima were reached approximately when the sea level was at a minimum, hence, the extent of the continental ice sheets were at a maximum, and the highest CO2 levels were found during interglacials during the high stands of the sea level.

During the last interglacial (the Eemian), there was a 4 - to 6 - m higher sea level that must have come from Greenland and / or Antarctica.

Today, atmospheric CO2 is much higher; ~ 390 ppm and increasing by ~ 2 ppm yr - 1, giving a higher contribution to radiative forcing than would be expected during the Last Interglacial.

Palaeoclimate studies show that differences in the manner in which the Earth orbited the Sun during the Last Interglacial are sufficient to explain the higher temperatures over most parts of the Northern Hemisphere, particularly due to greater axial tilt and eccentricity compared with the present day orbital configuration.

And of course, CO2 is at the highest levels during any interglacial of the past 800,000 years at least.

Sea level in the Eemian interglacial peaked some 6 — 9 meters higher than it's ever been during the Holocene.

However, those forcings weren't operative during the transition from ice age to interglacial; in order to explain the amplification necessary (rate and magnitude) for the small slow changes in solar influence due to Milankovic cycles to result in the rapid (compared to the descent into an ice age) transition to an interglacial, CO2 sensitivity must be higher.

They could well have been higher over the last 2,000 years, or 10,000 years, and they were certainly higher 100,000 years ago during the Eemian Interglacial, as is shown by the ice cores.

During the Last Interglacial Period (about 129,000 to 116,000 years ago) when peak global warmth was not more than 2 °C above pre-industrial temperatures, and peak global annual sea surface temperatures were 0.7 [0.1 to 1.3] °C warmer (medium confidence), maximum GMSL was at least 5 m higher than at present (very high confidence), but did not exceed 10 m (high confidence).

During that interglacial period, the study states, global average sea level was up to 30 feet higher than it is now, despite a climate that was just about 1 degree Celsius, or 1.8 degrees Fahrenheit, milder than today.

IPCC: Global average sea level in the last interglacial (Eemian) period (130,000 - 111,000 years ago) was likely 13 to 20 feet (4 to 6 meters) higher than during the 20th century, mainly due to the retreat of polar ice.

Dr. James Hansen said at a July 20 press conference that average global temperatures today are less than a degree cooler than they were during the last major interglacial or «Eemian» period 120,000 years ago, when global temperatures were just 2 °C above the pre-industrial climate and sea levels stood at five to nine metres higher than they are today.

We present here a high - resolution record of 10Be in the EPICA Dome C (EDC) ice core from Antarctica during the Marine Interglacial Stage 9.3 (MIS 9.3), 325 — 336 kyr ago, and investigate its spectral properties.

In a new study, marine scientists are surprised to find a disturbing trend in the increasing numbers of a specific type of phytoplankton, coccolithophores, which have been «typically more abundant during Earth's warm interglacial and high CO2 periods.»