Sentences with phrase «september average sea ice extent»

The extraordinary 2012 Arctic sea ice melt has resulted in a September average sea ice extent of 3.61 million sq km, according to the latest monthly data from the National Snow and Ice Data Center (NSIDC), smashing the previous record of 4.30 million sq km set in 2007.

It should be recalled that we are comparing these Outlook values to the September average sea ice extent as provided by the National Snow and Ice Data Center (NSIDC).

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).

Again, we are comparing these Outlook values to the September average sea ice extent as provided by NSIDC.

Not exact matches

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).

Extent of Arctic sea ice in September 2016 versus the 1981 - 2010 average minimum extent (gold Extent of Arctic sea ice in September 2016 versus the 1981 - 2010 average minimum extent (gold extent (gold line).

In fact, the average September Arctic sea ice extent is down almost 1 million square miles from where it was about 30 years ago.

Antarctic sea ice extent during September 2016 was 150,000 square miles (2.0 percent) below the 1981 — 2010 average.

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.

The predicted September monthly average sea ice extent is 5.48 (4.97 - 5.98) million km2 which is same to the result of June Report.

Our model predicts that September 2015 Arctic sea ice extent will be 2.11 million km2 below the 1982 to 2011 observed average extent, but will not reach values as low as those observed in 2007 or 2012.

Li and Li (NMEFC), 5.48 (4.97 - 5.98), Statistical We predict the September monthly average sea ice extent of Arctic by statistic method.

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.

Canadian Ice Service, 3.8, Heuristic Arctic Ocean September sea ice extents (while expected to be well below the 1979 ‐ 2013 average of 6.4 million square kilometres, and while expected to continue to be near or below 4.0 million square kilometres) are therefore expected to experience a slight recovery, preventing a repeat of last year's recoIce Service, 3.8, Heuristic Arctic Ocean September sea ice extents (while expected to be well below the 1979 ‐ 2013 average of 6.4 million square kilometres, and while expected to continue to be near or below 4.0 million square kilometres) are therefore expected to experience a slight recovery, preventing a repeat of last year's recoice extents (while expected to be well below the 1979 ‐ 2013 average of 6.4 million square kilometres, and while expected to continue to be near or below 4.0 million square kilometres) are therefore expected to experience a slight recovery, preventing a repeat of last year's record.

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.

Animation of changes in average September sea ice extent from 1979 through 2016 — with noteworthy natural variability and a long - term decline.

Average September sea ice extent from 1979 to 2000 was 7.04 million square kilometers (2.70 million square miles).

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).

Unless these nine models share common systematic biases, it is thus expected that the average 2014 September Arctic sea ice extent will be in the range 3.95 - 5.6 million km ², and likely above the trend line (5.1 million km ²), a situation similar to 2013.

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.

Our model predicts that September 2014 Arctic sea ice extent will be 1.45 million square kilometers below the 1981 to 2010 observed average extent, but will not reach values as low as those observed in 2007 or 2012.

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.

While the projected 2013 extent remains below the 1979 - 2007 observed average, the model predicts that September Arctic sea - ice extent will recover to a value comparable to that reached in 2006.

This is pretty squishy, but given the current extent and ice conditions in the Beaufort Sea, I think this year's September average will be about 4 million km2.

NMEFC of China (Li and Li), 4.02 (3.10 - 4.57), Statistical We predict the September monthly average sea ice extent of Arctic by statistic method and based on monthly sea ice concentration and extent from National Snow and Ice Data Centice extent of Arctic by statistic method and based on monthly sea ice concentration and extent from National Snow and Ice Data Centice concentration and extent from National Snow and Ice Data CentIce Data Center.

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).

Geophysical Fluid Dynamics Laboratory (GFDL) / NOAA (Msadek et al), 4.95 (4.24 - 5.55), Modeling Our prediction for the September - averaged Arctic sea ice extent is 4.95 million square kilometers, with an uncertainty range going between 4.24 and 5.55 million square kilometers.

For example, additional evidence of a warming trend can be found in the dramatic decrease in the extent of Arctic sea ice at its summer minimum (which occurs in September), decrease in spring snow cover in the Northern Hemisphere, increases in the global average upper ocean (upper 700 m or 2300 feet) heat content (shown relative to the 1955 — 2006 average), and in sea - level rise.

Figure 2: Arctic sea ice extent, September 2017, compared to the record low year of 2012 and the 1981 - 2010 average.

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).

In the 1980's and 199o's, sea ice minimum extent (in September) averaged about 6.5 - 7.5 M sq km.

Average July through September Arctic sea ice extent 1870 — 2008 from the University of Illinois and observational data from the National Snow and Ice Data Center for 2009 — 2ice extent 1870 — 2008 from the University of Illinois and observational data from the National Snow and Ice Data Center for 2009 — 2Ice Data Center for 2009 — 2012

«Dr. Amstrup, however, said that according to the National Snow and Ice Data Center, the average September sea ice extent for the years 2007 to 2017 was 4.5 million square kilometers, «nowhere near the low levels projected it would be by the middle of the century.&raqIce Data Center, the average September sea ice extent for the years 2007 to 2017 was 4.5 million square kilometers, «nowhere near the low levels projected it would be by the middle of the century.&raqice extent for the years 2007 to 2017 was 4.5 million square kilometers, «nowhere near the low levels projected it would be by the middle of the century.»

The average surface air temperature for the year ending September 2017 is the 2nd warmest since 1900; however, cooler spring and summer temperatures contributed to a rebound in snow cover in the Eurasian Arctic, slower summer sea ice loss, and below - average melt extent for the Greenland ice sheet.

Late - summer sea ice followed its long - term downward trend and scientific predictions of September extent averaged out close to the true final values.