Sentences with phrase «annual average sea ice extent»

Current predictions [5], [6] suggest that trends in sea ice extent will alter in the second half of this century and that the annual average sea ice extent will diminish by 33 %; most of this retreat is expected to occur in winter and spring [5], [6], with attendant risks for emperor penguins.

Not exact matches

Substantial reductions in the extent of Arctic sea ice since 1978 (2.7 ± 0.6 percent per decade in the annual average, 7.4 ± 2.4 percent per decade for summer), increases in permafrost temperatures and reductions in glacial extent globally and in Greenland and Antarctic ice sheets have also been observed in recent decades.

The annual average extent of Arctic sea ice is currently declining at about half a million square kilometres per decade — equivalent to about twice the area of the UK.

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.

Published trends in peer - reviewed articles on Antarctic sea ice extent (all on annual average extent):

In both the Arctic and the Antarctic «natural causes» (the seasons) are responsible for the seasonal decrease / increase in sea ice extent, which are, of course, much larger than the average annual change.

Annual average Arctic sea ice extent was the flavour du jour in certain quarters not so very long ago.

Resources [1] The NH sea - ice extent data are provided by NSIDC as daily anomalies form an average cycle plus the annual cycle which has been subtracted.

When averaging daily data from the National Snow and Ice Data Center, and noting that there was an unanticipated sensor transition during the year, the estimated average annual sea ice extent in the Arctic was approximately 3.92 million square miles, the smallest annual average in the recoIce Data Center, and noting that there was an unanticipated sensor transition during the year, the estimated average annual sea ice extent in the Arctic was approximately 3.92 million square miles, the smallest annual average in the recoice extent in the Arctic was approximately 3.92 million square miles, the smallest annual average in the record.

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

The bright white central mass shows the perennial sea ice, which is just the multi-year ice that has survived at least one summer, while the larger light blue area shows the full extent of the winter sea ice including the average annual sea ice during the 2012 months of November, December and January.

What the report says about sea ice and climate change: Since the early 1980s, annual average Arctic sea ice has decreased in extent between 3.5 percent and 4.1 percent per decade, become 4.3 to 7.5 feet (1.3 and 2.3 meters) thinner.

Satellite data since 1978 show that annual average arctic sea ice extent has shrunk by 2.7 [2.1 to 3.3] % per decade, with larger decreases in summer of 7.4 [5.0 to 9.8] % per decade.

Record droughts in many areas of the world, the loss of arctic sea ice — what you see is an increasing trend that is superimposed on annual variablity (no bets on what happens next year, but the five - to - ten year average in global temperatures, sea surface temperatures, ocean heat content — those will increase — and ice sheet volumes, tropical glacier volumes, sea ice extent will decrease.