Sentences with phrase «sea ice extent»

The red line shows the 1981 - 2010 daily average sea ice extent for that date.

The lowest sea ice extent on record occurred in 2007, followed closely by 2011, 2008, 2010, and 2009.

The exact date and value of the minimum sea ice extent in 2017 can only be determined in the coming weeks, after a significant increase.

The 2008 arctic summer sea ice extent minimum nearly matched the drastic reduction in minimum extent observed in 2007.

Nearly all models to date project a slight decline in sea ice extent at present and for the next several decades.

So that's what we can expect: big losses in sea ice area, and perhaps in sea ice extent as well (with a lag).

2016 tied 2007 as the year with the second smallest summer sea ice extent since record - keeping began in 1979.

The gray - shaded region shows two standard deviations from the average daily sea ice extent.

The result is a global sea ice extent near low - record levels.

The twentieth century sustained the lowest maximum sea ice extent values since A.D. 1200.

The decrease has been greatest during summer, with sea ice extent reducing by around 12 % per decade since the satellite record began in 1979.

It is also noteworthy that winter sea ice extent in individual years is not well correlated with subsequent ice melts and the resulting summer minimum.

This is the main reason for our lower than observed sea ice extent prediction.

The diagrams below show sea ice extent data since 1979.

Added to this is the concern that summer sea ice extent reached a minimum in 2007 and has actually been increasing since then.

Average annual sea ice extent in both polar regions was low in 2016.

Further, it only took one month of persistent wind conditions to slow the rate of sea ice loss, resulting in an increase in 2009 sea ice extent compared to 2007 and 2008.

Daily sea ice extent values were record low throughout the month.

The well - predicted years turn out to be those in which sea ice extent lies close to its long - term downward trend.

Why don't you publish a global sea ice extent number?

I view the question of whether the minimum sea ice extent sets a new record this year as secondary.

The ice age product is based on a 15 % sea ice concentration threshold to be consistent with the threshold used for mapping overall sea ice extent.

However, scientists have used historical records of sea ice conditions to estimate sea ice extent before 1979.

What researchers have found hasn't been encouraging, at least for polar bears: summertime sea ice extent in 2007 fell half below average for the past three decades.

(6) This study came out around the same time that we are observing greater sea ice extent.

Moreover, the spring melt is now proceeding very rapidly with sea ice extent already below last's year level on this date and identical to that of 2008.

This work concerns only sea ice extent without considerations of the age, thickness, and total volume of sea ice.

Since then sea ice extent has become much more stable — though still low.

First, there is no point in the past 150 years where sea ice extent is as small as it has been in recent years.

In fact, 2015 and early 2016 set records for the most sea ice extent observed.

However, a large percentage increase in a small number may not amount to a meaningful increase; sea ice extent currently remains well below the 1981 to 2010 average.

• How are the mechanisms controlling sea ice extent and volume changing and how are they related to changes in atmospheric and oceanic circulation patterns in lower latitudes?

It was presumably a satellite glitch but I hope to look into sea ice extent whilst there.