Sentences with phrase «september average extent»

Based on June 2017 data, it predicted a September average extent of about 5.4 million km2.

The predicted September average extent for 2016 is 4.30 (± 0.63) million km2.

Projected September daily extents are averaged to calculate the projected September average extent.

The difference between this and the NSIDC September average extent is calculated and estimated with a linear trend.

Talking about Watts: he did some exciting calculations showing a divergence between IJIS and NSIDC September average extent numbers, but he seems to have some trouble with his spreadsheet.

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.

After the 2016 September minimum, the Arctic ice growth was very sluggish, leading to well - below average extent through the 2016/2017 ice - growth season.

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

Because the 2008 low was so far below the September average, the negative trend in September extent has been pulled downward, from — 10.7 % per decade to — 11.7 % per decade (Figure 3).

«Of the 17 responses, all suggest that the extent will remain lower than the historical average (i.e., mean 1979 — 2000 September values) of 7.0 million square kilometers.

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.

The monthly average is then calculated from the September daily extents.

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.

Randles, 4.3 + / -1.1, Statistical This method attempts to predict the residual from a Gompertz fit of NSIDC average September Extent by linear regression using the residual from a Gompertz fit of Cryosphere Today area at 31May.

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.

NASA GMAO (Cullather et al.), 5.03 (+ / - 0.41), Modeling The GMAO seasonal forecasting system predicts a September average Arctic ice extent of 5.03 ± 0.41 million km2, about 4.7 percent less than the 2014 value.

Based on this hypothesis the PIOMAS April average volume is calculated from PIOMAS gridded data and the relationship between April volume and September extent is used as a predictor.

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 Sea.

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 record.

The two lowest September ice extents (2007 and 2012) were also both later than average; this year's minimum is the fourth lowest (see chart below).

Last year also saw a new record for highest average extent from April to September.

The minimum ice extent in September 2009 was greater than the past two Septembers, but again fell below the long - term average.

A value equal to or slightly greater than the average extent observed in September 2008 is expected.

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.

The mean ice extent in September, averaged across all ensemble members, is our projected ice extent.

The September daily extents are averaged to calculate the monthly extent.

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

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

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).

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).

Specifically, the estimate is calculated by multiplying the average (for the period 1985 - 2007) amount of ice that does not survive the summer (between the March maximum and the September minimum) by this year's March extent.

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 kilometers.

The daily September extents are averaged to create monthly averages.

The mean minimum ice extent in September, averaged across all ensemble members and corrected for forward model bias, is our projected ice extent.

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.

The mean ice extent in September, averaged across all ensemble members, corrected for forward model bias is our projected ice extent.

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).

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.

The average among these 35 informal predictions is 4.14 19 km2, which would make September 2016 the second - lowest extent we have seen.

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 Center.