Sentences with phrase «average sea ice extent for»

Average sea ice extent for July 2011 was 3.06 million square miles, 81,000 square miles lower than the previous record low, set in July 2007.

The average sea ice extent for the month of September was 4.28 million square kilometers (1.65 million square miles), the lowest September on record, shattering the previous record for the month, set in 2005, by 23 percent (see Figure 1).

Figure 1: This image compares the average sea ice extent for September 2007 to September 2005; the magenta line indicates the long - term median from 1979 to 2000.

Not exact matches

We have much better — and more conclusive — evidence for climate change from more boring sources like global temperature averages, or the extent of global sea ice, or thousands of years» worth of C02 levels stored frozen in ice cores.

Substantial reductions in the extent of Arctic sea ice since 1978 (2.7 ± 0.6 percent per decade in the annual average, 7.4 ± 2.4 percent per decade for summer), increases in permafrost temperatures and reductions in glacial extent globally and in Greenland and Antarctic ice sheets have also been observed in recent decades.

Antarctic: On the opposite pole, the Antarctic sea ice extent for August was 7.41 million square miles, 420,000 square miles (6.0 percent) above the 1981 - 2010 average.

Arctic: The average Arctic sea ice extent for August was 2.40 million square miles, 390,000 square miles (13.9 percent) below the 1981 - 2010 average and the seventh smallest August extent since records began in 1979 but the largest since 2009, according to the National Snow and Ice Data Centice extent for August was 2.40 million square miles, 390,000 square miles (13.9 percent) below the 1981 - 2010 average and the seventh smallest August extent since records began in 1979 but the largest since 2009, according to the National Snow and Ice Data CentIce Data Center.

But over the past decades, the melt season has grown longer and the average extent of Arctic sea ice has diminished, changing the game for many Arctic marine mammals — namely beluga, narwhal and bowhead whales; ringed, bearded, spotted, ribbon, harp and hooded seals; walruses; and polar bears.

A composite image shows how the extent of Arctic sea ice in September 2016 compared with a 30 - year average for the month (yellow line).

Though slightly larger than last year, the minimum sea ice extent 2017 is average for the past ten years and far below the numbers from 1979 to 2006.

Through satellite images, researchers have observed a steep decline in the average extent of Arctic sea ice for every month of the year.

The Antarctic sea ice extent for June was 40,000 square miles below the 1981 — 2010 average.

Arctic sea ice extent for February 2018 averaged 13.95 million square kilometers (5.39 million square miles).

Arctic sea ice extent was below normal for the 11th consecutive April this year, covering an average of 5.7 million square miles (14.7 million square kilometers) 2.1 percent below the 1979 - 2000 average extent and the 15th smallest April extent since records began in 1979.

The NSIDC announced on Monday that Arctic sea ice hit its maximum extent for the winter on March 24, when it averaged 5.607 million square miles.

Current predictions [5], [6] suggest that trends in sea ice extent will alter in the second half of this century and that the annual average sea ice extent will diminish by 33 %; most of this retreat is expected to occur in winter and spring [5], [6], with attendant risks for emperor penguins.

The average Arctic sea ice extent for November 2016 was 750,000 square miles (17.7 percent) below the 1981 — 2010 average, according to analysis by the National Snow and Ice Data Center using data from NOAA and NAice extent for November 2016 was 750,000 square miles (17.7 percent) below the 1981 — 2010 average, according to analysis by the National Snow and Ice Data Center using data from NOAA and NAIce Data Center using data from NOAA and NASA.

The average Arctic sea ice extent for October 2016 was 980,000 square miles (28.5 percent) below the 1981 — 2010 average, according to analysis by the National Snow and Ice Data Center using data from NOAA and NAice extent for October 2016 was 980,000 square miles (28.5 percent) below the 1981 — 2010 average, according to analysis by the National Snow and Ice Data Center using data from NOAA and NAIce Data Center using data from NOAA and NASA.

The average Arctic sea ice extent for December was 4.67 million square miles, according to analysis by the National Snow and Ice Data Center based on data from NOAA and NAice extent for December was 4.67 million square miles, according to analysis by the National Snow and Ice Data Center based on data from NOAA and NAIce Data Center based on data from NOAA and NASA.

There was a USGS 2010 paper by D Douglas that predicted «For the Bering Sea, median March ice extent is projected to be about 25 percent less than the 1979 — 1988 average by mid-century and 60 percent less by the end of the century» But if Bering ice is driven by the PDO I suspect that prediction will fail.

If you plot the average Arctic Sea Ice extent for 20 years, the you should also plot the monthly maximum and minimum values on the same figure so that we can get some perspective on where the 2007 and 2008 data falls in the context of annual variability, or examine for trends.

There was a USGS 2010 paper by D Douglas that predicted «For the Bering Sea, median March ice extent is projected to be about 25 percent less than the 1979 — 1988 average by mid-century and 60 percent less by the end of the century» But if Bering ice is d»

The graph below (high - resolution copy) shows the range of the forecasts for early September, the point when the sea ice typically reaches its minimum extent, compared to recent years and the average over the period of precise satellite measurement.

Global Weather Climate Logistics, 5.55, Statistical (same as June) Our forecast for average September 2015 sea ice extent is 5.55 million sq. km.

(08/10/2011) Average Arctic sea ice extent hit a new record low for July according to the National Snow and Ice Data Center (NSIDice extent hit a new record low for July according to the National Snow and Ice Data Center (NSIDIce Data Center (NSIDC).

Why, because the current sea ice extent is already lower than the average minimum for the decade of the 90s?

As of September 5, sea ice extent remains below average everywhere except for a small area within the Laptev Ssea ice extent remains below average everywhere except for a small area within the Laptev SeaSea.

bozzza @ 424, For one theory see: http://forum.arctic-sea-ice.net/index.php/topic,724.msg60178.html#msg60178 I believe that the current downward fluctuation in Antarctic Sea Ice Extent if likely associated with the influence of our currently strong El Nino on the average location of the Amundsen Bellingshausen Sea Low.

In both the Arctic and the Antarctic «natural causes» (the seasons) are responsible for the seasonal decrease / increase in sea ice extent, which are, of course, much larger than the average annual change.

; North Pole Cam 1 & 2; Arctic Sea Ice Extent Averaging Below 2007 Anomaly; Paleoclimate Implications for Human - Made Climate Change; UN Security Council Addresses Considers Global Security and Climate Change; New study details glacier ice loss following ice shelf collapse; Climate Change To Spawn More Wildfires; Gingrich Says 2006 Climate Change Ad He Starred In Was «Misconstrued&raqIce Extent Averaging Below 2007 Anomaly; Paleoclimate Implications for Human - Made Climate Change; UN Security Council Addresses Considers Global Security and Climate Change; New study details glacier ice loss following ice shelf collapse; Climate Change To Spawn More Wildfires; Gingrich Says 2006 Climate Change Ad He Starred In Was «Misconstrued&raqice loss following ice shelf collapse; Climate Change To Spawn More Wildfires; Gingrich Says 2006 Climate Change Ad He Starred In Was «Misconstrued&raqice shelf collapse; Climate Change To Spawn More Wildfires; Gingrich Says 2006 Climate Change Ad He Starred In Was «Misconstrued»

NSIDC 5 day averaged Arctic sea ice extent has been at a record low level for the date for quite a while:

What is also stunning are sea - ice daily extent figures averaging ice loss of more than 100,000 square kilometres per day for the last four days.

For the month of November, the Arctic sea ice extent averaged 9.08 million square kilometers, which is 1.95 million square kilometers below the recorded 1981 to 2010 long - term average for the said monFor the month of November, the Arctic sea ice extent averaged 9.08 million square kilometers, which is 1.95 million square kilometers below the recorded 1981 to 2010 long - term average for the said monfor the said month.

The figure below shows the average Arctic sea ice extent for each week of the year for every year between 1978 and 2017.

Last winter, sea ice extent was on the low side, but the melting trajectory looks pretty average for the decade of the 2000's.

The average Arctic sea ice extent for December was 4.67 million square miles, according to analysis by the National Snow and Ice Data Center based on data from NOAA and NAice extent for December was 4.67 million square miles, according to analysis by the National Snow and Ice Data Center based on data from NOAA and NAIce Data Center based on data from NOAA and NASA.

Arctic sea ice extent June 1 — October 1 for 2007, 2012, 2013, 2014 and 1981 - 2010 average (+ / - 2 st. dev.

However, the pace of decline returned to near - average rates by July, and the end - of - summer minimum sea ice extent, recorded on September 10, eventually tied for second lowest with 2007 (2012 remains the lowest in the satellite time series by more than 600,000 square kilometers or 232,000 square miles).

Stern: My estimate for September average sea ice extent (4.67 million square kilometers) was simply based on extrapolation of the 10 - year trend (1989 - 2008).

The average arctic sea ice monthly extent for September 2012 was the lowest observed in the satellite era at 3.6 million square kilometers, based on National Snow and Ice Data Center (NSIDC) estimates — 50 % lower than the 1979 - 2000 average of 7.0 million square kilometeice monthly extent for September 2012 was the lowest observed in the satellite era at 3.6 million square kilometers, based on National Snow and Ice Data Center (NSIDC) estimates — 50 % lower than the 1979 - 2000 average of 7.0 million square kilometeIce Data Center (NSIDC) estimates — 50 % lower than the 1979 - 2000 average of 7.0 million square kilometers.

Daily sea ice extent timeseries for April through September for 2015 (light blue, through 17 August), 2012 (dashed green), and the 1981 - 2010 average (black) and standard deviation (gray).

Geophysical Fluid Dynamics Laboratory [GFDL] NOAA (Msadek et al), 5.07 (4.69 - 5.63), Modeling Our prediction for the September - averaged Arctic sea ice extent is 5.07 million square kilometers, with an uncertainty range going between 4.69 and 5.63 million square kilometers.

Thus, when sea ice is retreating or advancing at a high rate over the course of the month, as was the case for December 2016, the Sea Ice Index monthly average can yield a larger extent than from simply averaging daily extent valusea ice is retreating or advancing at a high rate over the course of the month, as was the case for December 2016, the Sea Ice Index monthly average can yield a larger extent than from simply averaging daily extent valuice is retreating or advancing at a high rate over the course of the month, as was the case for December 2016, the Sea Ice Index monthly average can yield a larger extent than from simply averaging daily extent valuSea Ice Index monthly average can yield a larger extent than from simply averaging daily extent valuIce Index monthly average can yield a larger extent than from simply averaging daily extent values.

GFDL NOAA (Msadek et al.), 4.82 (4.33 - 5.23), Modeling Our prediction for the September - averaged Arctic sea ice extent is 4.82 million square kilometers, with an uncertainty range going between 4.33 and 5.23 million km2 Our estimate is based on the GFDL CM2.1 ensemble forecast system in which both the ocean and atmosphere are initialized on August 1 using a coupled data assimilation system.

«Arctic minimum sea ice extent at the end of summer was tied with 2007 for the second - lowest amount during the satellite record starting in 1979, at 33 percent below the long - term average.»

NSIDC 5 day averaged Antarctic sea ice extent is now at a record low level for the date, since satellite measurements began in 1979:

Also in January, the Arctic averaged a stunning 13.5 degrees Fahrenheit above average temperatures, which led to a new record low of Arctic sea ice extent for the month.

Arctic sea ice is now 28 % beneath its historic average extent, setting a record low for October.

To be consistent with the validating sea ice extent index from NSIDC, if possible, please first compute the average sea ice concentration for the month and then compute the extent as the sum of cell areas > 15 %.

If your method predicts sea ice extent (SIE) directly, average it in time and across ensemble members, if you have them, for September (giving values between 0 and 100 % inclusive).