Rennie (Public), 3.20 (2.50 - 3.80), Heuristic Starting with the April PIOMAS volume distribution and the April NSIDC average ice extent the estimated extent loss for each 10
cm thickness of ice loss is calculated.
Starting with the April Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS) volume distribution and the April National Snow and Ice Data Center (NSIDC) average ice extent the estimated extent loss for each 10
cm thickness of ice loss is calculated.
Not exact matches
The two papers don't mention any velocity changes due to increased slope, but they do record that at elevations above 1500 - 2000 m, the
ice has been growing in
thickness by about 5 - 6
cm / yr, whereas below the 1500m level there's been a thinning
of about -2
cm / yr.
Having said that, it is a really small effect — if the entire Arctic summer sea
ice pack melted (average
thickness 2 metres, density ~ 920 kg / m3, area 3 × 10 ^ 6 km ^ 2 (0.8 % total ocean area) = > a 4.5
cm rise instantly which implies a global sea level rise
of 0.36 mm.
After all, the
Ice between Greenland and Canada saw an additional 20
cm of thickness due to the exceptionally cold winter.
In our 2010 SIO estimate, it was found that the CFSv2 sea
ice extent seemed too excessive (due to too thick
ice in the initial condition), and the extent confined within 60
cm of ice thickness matches the real time observation.
The most recent
ice data, 10 June 2013, from a SAMS
ice mass balance buoy installed in the fast
ice in Inglefieldbukta (N 77 ° 54», E 18 ° 17») reported an
ice thickness of about 88
cm and snow depth 20
cm.
If this thinning would have eliminated
ice from areas observed to have sea
ice, a minimum
thickness of 20
cm was left in place for the
ice initial condition.
If this thinning would have eliminated
ice from areas observed to have sea
ice, a minimum
thickness of 20
cm was left in place.
The
ice at the buoy, starting at a
thickness of roughly 1.28 m, lost 3
cm of ice at the bottom and 20
cm of ice at the top in June.
These in turn suggest that decreases in
ice thickness of < 30
cm may be attributable to this flux, rather than to the supposed consequence
of a warming atmosphere over the Arctic Ocean.
Seymour Laxon
of the Centre for Polar Observation and Modelling said the
thickness of the
ice could now be measured to an accuracy
of 10
cm (3.5 in).
The research, reported in Geophysical Research Letters, showed that last winter the average
thickness of sea
ice over the whole Arctic fell by 26
cm (10 %) compared with the average
thickness of the previous five winters, but sea
ice in the western Arctic lost around 49
cm of thickness.
Last winter the average
thickness of sea
ice over the whole Arctic fell by 26
cm (10 %) compared with the average
thickness of the previous five winters, but sea
ice in the western Arctic lost around 49
cm of thickness.