The red part of the graph shows a rapid recovery from the lower - than - average
sea ice area in recent years.
Note, that the ocean heat content includes loss
of sea ice area, but not loss of sea ice thickness.
As we approach the summer sea ice minimum, a skillful prediction is feasible based on the presently
observed sea ice area.
For the month of April, the most recent month for which we have data, Dr. Rosling writes: «
Arctic Sea ice area in April last 5 years were all lower than 1981 - 2010 average!
A scant handful of hours later, by way of response, you put an AMSR2 graph of
Antarctic sea ice area on the same thread which nicely illuminated the point.
I've attached an updated plot of the minimum Northern
Hemisphere sea ice AREA for the satellite era for some context.
Goddard moves on to a graph, apparently from the University of Illinois (no cite, but it looks real) showing global
sea ice area from 1979 to the present.
I've followed the links to the data, and just had a look at the Southern
Sea Ice areas as recorded there.
The regression - based forecast submitted by Tivy for the Greenland Sea (Figure 7) also shows a reduction in
September sea ice area compared to 2009 based on fall (Sep - Oct - Nov) sea surface temperature anomalies in the North Atlantic.
This idea is partially supported by the result that the
ABS sea ice area timeseries explains somewhat more temperature change over West Antarctica than do the PCs of geopotential height.
«At 1.5 degrees Celsius, half of the time we stay within our current summer sea ice regime whereas if we reach 2 degrees of warming, the
summer sea ice area will always be below what we have experienced in recent decades.»
Those high temperatures have kept Arctic sea ice to record low levels; the Arctic looks to see a record low winter
maximum sea ice area for the third year in a row.
However, compared to 2016, the warmest year on record for this Arctic sector, which saw record -
low sea ice area for eight months of the year, 2017 mainly saw exceptionally large anomalies in winter.
bozzza @ 424, The Antarctic
sea ice area anomaly has gone negative in the last couple of days, the first time that has happened in four years.
As reported on Cryosphere Today based on NSIDC data,
sea ice area today is 2.92 million square kilometres.
Satellite data show that the annual minimum for Arctic
sea ice area fell 7 percent per decade between 1980 and 2000 — but since 2000 it has fallen 14 percent per decade.
In early 2017, the Arctic, Antarctic and Global
Sea Ice Area Extent were each at the lowest level in the data set.
The graph shows the
weekly sea ice area in the Western Parry Channel / Northern Route of Northwest Passage at the end of September 2010.
As I wrote earlier this week, the scientists there use their own methods to
calculate sea ice area that are different from the National Snow and Ice Data Center.
Covering 1.59 million square miles (4.12 million square kilometers), this summer's sea ice shattered the previous record for the smallest ice cap of 2.05 million square miles (5.31 million square kilometers) in 2005 — a further loss of
sea ice area equivalent to the states of California and Texas combined.
You may be able to loop a longer time span from the NOAA Arctic water vapor animations but the principal ice loss is from the Barents and
Greenland sea ice areas.
So what is most
logical sea ice area for the Southern Ocean for both glacial and interglacial periods?
Phrases with «sea ice area»