Sentences with phrase «previous ice cover»

Now bare water is exposed to the sun's rays, and absorbs more light than did the previous ice cover; so the planet heats up a little more.

Not exact matches

The scientists were able to use a test scenario in the Greenland Sea to demonstrate that ALES + returns water levels for ice - covered and open ocean regions which are significantly more precise than the results of previous evaluation methods.

Antarctica's sea - ice cover was also greatly reduced, measuring about 154,000 square miles (398,858 kilometers) smaller than it was in 1986, the previous record - holding year.

At its minimum on September 16, the ice covered an area about the size of India; that is 18 percent smaller than the previous record low, set in 2007.

Previous research estimated that it covered much of western Canada as late as 12,500 years ago, but new data shows that large areas in the region were ice - free as early as 1,500 years earlier.

Images from NASA's Galileo probe a few years ago, coupled with previous observations, suggest that Europa's ice - covered surface may conceal a global, liquid ocean tens of kilometers deep.

Recruitment is related to the winter sea ice cover from the previous year, as diminished sea ice cover reduces habitat available for over-wintering juvenile and adult krill and reduces the size of the food - rich marginal sea ice zone in summer.

When these factors combine in such a way that summers are cool and short enough that they fail to melt back the previous year's winter ice cover to the usual degree, the «permanent» (as in year round) ice extent in the north begins to grow and spread south.

The change in cloud cover between the Maunder Minimum (Little Ice Age) and today would make a difference of ~ 7 W / m2, pretty close to the 7 W / m2 which is lacking at the depth of the previous glacial...

Likewise NOAA's 2014 Arctic Report card also stated the «coverage of multiyear ice in March 2014 increased to 31 % of the ice cover from the previous year's value of 22 %.»

As we did in the previous two posts, we will examine each proxy and reject any that have an average time step greater than 130 years or if it does not cover at least part of the Little Ice Age (LIA) and the Holocene Climatic Optimum (HCO).

«The current Arctic ice cover is thinner and younger than at any previous time in our recorded history, and this sets the stage for rapid melt and a new record low,» said Research Associate Sheldon Drobot, who leads CCAR's Arctic Regional Ice Forecasting System group in CU - Boulder's aerospace engineering sciences departmeice cover is thinner and younger than at any previous time in our recorded history, and this sets the stage for rapid melt and a new record low,» said Research Associate Sheldon Drobot, who leads CCAR's Arctic Regional Ice Forecasting System group in CU - Boulder's aerospace engineering sciences departmeIce Forecasting System group in CU - Boulder's aerospace engineering sciences department.

In reply to David Maddison, this might be of interest as well: A reader's letter in the Sunday Telegraph, page 23 on Tuesday October 1st 2013 from Captain Derek Blacker RN (retd), Director of Naval Oceanography and Meteorology 1982 - 84: «SIR — I was a meteorologist during the Seventies when glaciers in Europe and other continents in Europe had been growing for the previous ten years, and pack ice had been increasing during winters to cover almost all of the Denmark Strait between Iceland and Greenland.

Actual visual observations of sea ice recently made from aircraft during buoy deployment operations over the Arctic by the Naval Oceanographic Office and National Guard confirm that the ice cover is noticeably thinner and that it is more fractured than in previous years.

The extent of Bering Sea ice cover this year has so far exceeded that of the previous two years, he added, because the extraordinary and record - setting low sea - ice formation of the past two winters mainly were due to a couple of short - term factors: a strong El Nino and an unusually persistent warm - water mass in the north Pacific commonly called «The Blob.»

For more on the terrestrial foods topic, see my detailed discussion in this previous post, and this recent (March 30) ScienceNews report on yet another, largely anecdotal «polar bears resort to bird eggs because of declining sea ice» story (see photo below, based on a new paper by Prop and colleagues), which was also covered March 31 at the DailyMail («Polar bears are forced to raid seabird nests as Arctic sea ice melts — eating more than 200 eggs in two hours,» with lots of hand - wringing and sea ice hype but little mention of the fact that there are many more bears now than there were in the early 1970s around Svalbard or that the variable, cyclical, AMO (not global warming) has had the largest impact on sea ice conditions in the Barents Sea).

Even though the seasonal ice cover was formed later in the fall of 2007, the mean thickness of the FY ice cover at the end of March seems comparable to that of the previous two seasons because of lower snow accumulation and thus faster growth i.e., higher ice production.

In two previous postings, we discussed how both satellite and thermometer measurements document the extremely cold regions of Antarctic that are covered by ice sheets, and the fact that for the lost 30 years those areas have experienced a slight cooling.

In addition, even though the seasonal ice cover was formed later in the fall of 2007, the mean thickness of the seasonal ice cover at the end of March was comparable to that of the previous two seasons.

Other in situ and satellite data suggest that even though the seasonal ice cover was formed later in the fall of 2007, the mean thickness of first year ice cover is comparable to that of the previous two seasons because of lower snow accumulation and lower air temperatures and thus, faster growth.

The new report is in line with previous research published in September 2015, which indicated that burning all fossil fuels in the world will be enough to melt the entire ice sheet that covers Antarctica.

Figure 3 shows the temperature reconstructions from Antarctic ice cores for the last 420,000 years covering four previous Interglacials.

For the first time in our records, the North Pole was covered by seasonal ice (i.e., ice that grew since the end of the previous summer).

The area of the Arctic ocean at least 15 % covered in ice is this week about 8.5 m sq kilometres --- lower than the previous record low set in 2007 --- according to satellite monitoring by the US National Snow and Ice Data Centre (NSIDC) in Boulder, Coloraice is this week about 8.5 m sq kilometres --- lower than the previous record low set in 2007 --- according to satellite monitoring by the US National Snow and Ice Data Centre (NSIDC) in Boulder, ColoraIce Data Centre (NSIDC) in Boulder, Colorado.

Daniel Cressey; cross-posted from The Great Beyond The ice sheet covering east Antarctica may have been melting since 2006, according to new research, contradicting previous suggestions that it has remained stable or even grown in mass.

In September, National Snow and Ice Data Center's director Mark Serreze said, «The volume of ice left in the Arctic likely reached the lowest ever level this month» and «I stand by my previous statements that the Arctic summer sea ice cover is in a death spirIce Data Center's director Mark Serreze said, «The volume of ice left in the Arctic likely reached the lowest ever level this month» and «I stand by my previous statements that the Arctic summer sea ice cover is in a death spirice left in the Arctic likely reached the lowest ever level this month» and «I stand by my previous statements that the Arctic summer sea ice cover is in a death spirice cover is in a death spiral.

Within this uncertainty range, this reconstruction suggests that the pronounced decline in summer Arctic sea ice cover that began in the late twentieth century is unprecedented in both magnitude and duration when compared with the range of variability of the previous roughly 1,450 years.

The National Snow and Ice Data Center announced Wednesday that the sea ice covering the Arctic Ocean has smashed the previous record minimum extent set in 2007 by a staggering 18 perceIce Data Center announced Wednesday that the sea ice covering the Arctic Ocean has smashed the previous record minimum extent set in 2007 by a staggering 18 perceice covering the Arctic Ocean has smashed the previous record minimum extent set in 2007 by a staggering 18 percent.

The best current estimate of Southern Hemisphere LGM sea ice cover, by Gersonde et al. (13), is an amalgamation of data from numerous previous studies and highlights substantial information gaps in the subantartic region.

Instead, ice cover was up more than 50 percent over the previous year, and Antarctic sea - ice cover hit its highest point since records began.