Sentences with phrase «ice free period in»

«We have not seen an ice free period in the Arctic Ocean for 2,6 million years.

«We have not seen an ice free period in the Arctic Ocean for 2,6 million years.

«Under the 4 - degree Celsius scenario, we would have a high probability of a three - month ice free period in the summer months by 2050.

Not exact matches

«The combined sea ice data suggest that the seasonal Arctic sea ice cover was strongly reduced during most of the early Holocene and there appear to have been periods of ice free summers in the central Arctic Ocean.

The study, led by researchers at The University of Texas at Austin Jackson School of Geosciences, addresses why the Earth has fluctuated from periods when the planet was covered in ice to times when even the polar regions were ice - free.

I could keep going, but I think you get the point: there is no evidence whatever of ice - free periods in historical times, and a great deal of evidence showing the opposite.

# 200 — Jim, the subject under discussion was allegedly ice - free periods in the Arctic in 1934 and 1953.

The work pointing to periods of recovery on the way to a largely ice - free summer later in the century is still valid....

This afternoon, I asked Marika Holland, a climate and ice modeler at the National Center for Atmospheric Research, to consider recent ice trends in light of her work with Jennifer E. Kay and Alexandra Jahn on a paper finding likely periods of ice recovery on the way to an ice - free Arctic in summer.

During the ice - free period in August and September 2007, the prevailing cyclonic atmospheric circulation deflected the freshwater plume of the River Lena to the east, which increased the salinity on the mid-shelf north of the Lena Delta.

Or how about the changes in sea ice are normal variations, that the Arctic was ice free during other interglacial periods, that sea ice is an anomaly?

In a period when ice covered northern France, Siberia below latitude 60 ° N was ice - free.

For many decades after that it will be a matter of «making hay when the sunshines» in the Arctic summers and the ice free period of those summers will grow longer and longer..

These preliminary results showed that, if current melt rates continue, the Arctic could see ice free periods during summer starting in less than 10 years.

During the glacial periods, D - fir was only sparsely scattered in small ice - free regions.

«The combined sea ice data suggest that the seasonal Arctic sea ice cover was strongly reduced during most of the early Holocene and there appear to have been periods of ice free summers in the central Arctic Ocean.»

Some previous models project an ice - free summer period in the Arctic Ocean by 2040 (Holland et al., 2006), and even as early as the late 2030s using a criterion of 80 % sea ice area loss (e.g., Zhang, 2010).

Longer ice - free periods on the Great Lakes can result in more lake - effect snowfalls.

As sea ice declines, it becomes thinner, with less ice build - up over multiple years, and therefore more vulnerable to further melting.15 Models that best match historical trends project northern waters that are virtually ice - free by late summer by the 2030s.25, 26,12 Within the general downward trend in sea ice, there will be time periods with both rapid ice loss and temporary recovery, 27 making it challenging to predict short - term changes in ice conditions.

Conclusions Early ice breakup in summer and / or late freeze - up in fall can not exclusively be blamed when polar bears struggle to get through the ice - free period.

Also, in Russia there where also documented exceptional high latitude seas free form ice exactly in the same period — 20 ′ and 30 ′.

«Looking ahead, it is still a matter of when, rather than if, the Arctic will become ice - free in summer, but we expect to see periods where the ice melts rapidly and other times where it retreats less fast,» says Ed Hawkins, a climatologist at the University of Reading in the UK, commenting on the study.

This warm - water inflow further enhanced the sea - ice melting, leading to ice - free conditions in the Bering Sea during this period.

The Quaternary is the critical period and even now we are only talking about ice free oceans in the Arctic summer and still a ways to go.

That moment could well coincide with the first practical ice - free period in the Arctic Basin.

In the context of geologic time (billions of years) it is apparent that the earth has been completely ice free (no polar ice caps, no galciers, etc.) for long periods of time.

Under this scenario, photosynthetic organisms in low - ice or ice - free regions could continue to capture sunlight efficiently and survive these periods of extreme cold.