Sentences with phrase «average minimum extent»

The 2011 low is 2.38 million square kilometers (919,000 square miles) below the average minimum extent measured between 1979 and 2000.

Satellite data reveal how the new record low Arctic sea ice extent, from Sept. 16, 2012, compares to the average minimum extent over the past 30 years (in yellow).

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

This image shows a visualization of Arctic sea ice cover on Sept. 12, 2013, with a yellow line showing the 30 - year average minimum extent.

Not exact matches

Satellites show the extent of Arctic sea ice on Sept. 16, 2012 as compared to the average minimum from the past 30 years (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.

On the regional scale, the CEI was above average in the West and Northwest due to extremes in warm maximum and minimum temperatures and the spatial extent of drought.

Regionally, CEI was much above average in the West and Northwest, due to elevated components of warm maximum and minimum temperatures, spatial extent of drought and days with precipitation.

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.

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.

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.

Hardly, the March extent (minimum) is changing at 4.2 ± 4.6 %, i.e. fluctuating without much trend, two years ago it was 20 % below average.

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

(Right) Extents and thicknesses of the Greenland Ice Sheet and western Canadian and Iceland glaciers at their minimum extent during the last interglacial, shown as a multi-model average from three ice models.

NASA satellite data reveals how this year's minimum sea ice extent, reached on Sept. 9 as depicted here, declined to a level far smaller than the 30 - year average (in yellow) and opened up Northwest Passage shipping lanes (in red).

In other words, Arctic sea ice extent has been lower than it was in 1938 - 43 during the entire satellite record, and the current average summer extent is approximately 4.3 million square kilometers lower than the 1940 minimum.

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).

Stroeve says this year's minimum extent was largely due to the exceptionally warm winter in the Arctic, part of a trend that's resulted in 14 consecutive months of record - setting average high temperatures worldwide.

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

The so - called minimum sea - ice extent in «07 was at that time the lowest since satellite monitoring began in 1979, covering an average of 1.65 million square miles.

If we average the minimum ice extent for that decade it is flat.

Given the minimum ice extent is about 4 million km2 and 4000 km3 (an average of 1 meter thickness) the SMOS data is of limited value.

Using average rates of decline based on data from 1979 - 2000 gives a minimum extent to be significantly lower than the 5.5 million square kilometers earlier forecasted by Stroeve et al..

After above - average air temperatures and record ice loss in May 2010, the ice extent at the beginning of June fell below the previous record minimum for the same day in 2006.

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).

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.

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

«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.»

This is exemplified by record minimum extent averaged from March through June 2016.

With averages over the full array extent based on a minimum of 40 % valid data points, SAT and SST data are available for 1993 - 2015.

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.

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

In April 2012, NSIDC updated its method of calculating daily values for the Arctic sea ice extent minimum from a 5 - day centered average to a 5 - day trailing average.

The 2012 minimum sea ice extent was 49 % below the 1979 to 2000 average and 18 % below the previous record from 2007.