-- Sea
ice edge positions for Newfoundland and the Canadian Maritime Region from observations, for 1870 to 1962.
-- The sea
ice edge positions in the North Atlantic, between 1850 and 1978, derived from various sources, including newspapers, ship observations, aircraft observations, diaries and more.
There is an interesting archive of sea
ice edge positions from the Nordic seas going back a couple of centuries at NSIDC.
From these records, the researchers created a dataset of 191 sea
ice edge positions, providing «an almost circumpolar picture of the Antarctic summer sea ice edge» for 1897 - 1917, the paper says.
Satellite data are not quality controlled quickly enough; and for reasons explained in the Sea Ice Index documentation, the daily
ice edge position can be off by tens of kilometers or more from the ice edge that an analyst would draw.
2012 Sea ice minimum; purple lines show normal (median)
ice edge position.
Not exact matches
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Gerland and others speculate that it is the influence of the Atlantic water that controls the
position of the
ice edge.
In the Greenland Sea the
position of the
ice edge is comparable to past years.
The current sea
ice extent in the Greenland Sea (Figure 4) differs only a little from the previous years and as Gerland et al. point out, different mean
positions of the
ice edge over one to three decades do not show substantial differences.
In the southern Chukchi and eastern East Siberian Sea, the
ice edge is near its normal
position in late June, while it is much further north than normal in the Beaufort Sea.
Pokrovsky finds that the surface wind patterns have not changed much from previous months and that this is reflected in the
position of the
ice edge, pushing
ice north of the median
ice edge.