[Vision2020] Polar Science Center: Arctic Sea Ice Volume Anomaly

[Ted Moffett]

Read graph at website below on Arctic sea ice volume:

http://psc.apl.washington.edu/ArcticSeaiceVolume/images/BPIOMASIceVolumeAnomalyCurrent.png

http://psc.apl.washington.edu/ArcticSeaiceVolume/IceVolume.php

>From website second above:

Arctic Sea Ice Volume Anomaly
Sea Ice Volume is calculated using the Pan-Arctic Ice Ocean Modeling and
Assimilation System (PIOMAS) developed at APL/PSC by Dr. J. Zhang and
collaborators.  Anomalies for each day are calculated relative to the
average<http://psc.apl.washington.edu/ArcticSeaiceVolume/images/PIOMAS_daily_mean.png>over
the 1979 -2009 period for that day to remove the annual cycle. The
model mean seasonal cycle of sea ice volume ranges from 28,600 km^3 in April
to 14,400 km^3 in September.  The blue line represents the trend calculated
from January 1 1979 to the most recent date indicated on the figure.  Total
Arctic Ice Volume for March 2010 is 20,300 km^3, the lowest over the
1979-2010 period and 38% below the 1979 maximum. PIOMAS calculates that the
monthly average Arctic Sea Ice Volume for May 2010 was 19,000 km^3, the
lowest May volume over the 1979–2010 period, 42% below the 1979 maximum and
32% below the 1979–2009 May average. September Ice Volume was lowest in 2009
at 5,800 km^3 or 67% below its 1979 maximum. Shaded areas represent one and
two standard deviations of the anomaly from the trend. Updates will be
generated at approximately two-weekly intervals.
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Vision2020 Post: Ted Moffett
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