Sentences with phrase «daily extent»

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.

Exceptionally warm winter temperatures can affect the re-growth, and October 2016 — January 2017 saw the lowest daily extent of sea ice in record, likely due to record warm temperatures in the Arctic.

Meier, 4.78 (± 0.34), Statistical This method uses daily extent change rates to project the 2014 extent on July 31 through the end of September.

However, since August 26, total sea ice extent is already lower than at the same time in 2007 and is currently tracking as the second lowest daily extent on record.

August saw a record decline in Arctic sea ice, with the ice cover reaching the record smallest daily extent on August 26, a level that had been previously set on September 18, 2007.

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 values.

Meier (NASA Goddard), 5.09 (+ / - 0.62), Statistical This method is a simple statistical method that uses previous years» daily rates of extent change to project the 2015 daily extent through the end of September.

Arctic sea ice appears to have broken the 2007 record daily extent and is now the lowest in the satellite era.

Rapid ice growth during the second half of September allowed the monthly average sea ice extent to somewhat rebound from the second lowest daily extent observed on September 10.

It's all the more risible given the fact — per JAXA — that 2018 has so far had the lowest daily extent ever for the time of year:

As of 13 August, «Sea ice extent is currently tracking at 5.4 million square kilometers (2.1 million square miles), with daily extents running at 940,000 square kilometers (361,000 square miles) below previous daily record lows, a significant decline from past years.»

The monthly average extent for the month of December is higher than the month's average of daily extents because of the way in which the Sea Ice Index algorithm calculates the monthly extent.

While daily extents for December 2016 were at record lows, based on the method employed by NSIDC, the monthly average extent for December 2016 was slightly higher than that recorded for December 2010, the record low December in the satellite record.

The minimum daily extent is predicted to be 4.19 (± 0.62) million km2 and occur on 16 September.

This was 70,000 square kilometers (27,000 square miles) below the September 18, 2007 daily extent of 4.17 million square kilometers (1.61 million square miles).

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

The graph above shows the daily extent of melt during 2012 on the Greenland Ice Sheet surface as a percentage, compared to the average from 1981 to 2010.

With two to three more weeks left in the melt season, sea ice continues to track below 2007 daily extents.

Meier et al, 4.6, + / -0.5 Statistical This statistical method uses previous years» daily extent change rates from July 1 through September 30 to calculate projected daily extents starting from June 30.

Each year at the beginning of January, the reference year on the daily extent graph changes.

Doubling the standard deviation to produce a 95 % range means that 95 % of the daily extents for the years 1981 to 2010 fall within that range.

In February 2010, we added the range of standard deviation to our daily extent chart.

Currently, the ice extent is tracking below that observed in 2010, 2013 and 2014, making the daily extent the 4th lowest in the satellite data record.

Why is the monthly average extent not equal to the average of the daily extent values?