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B.

The ice conditions and climatic
variations in Greenland


Even in the age of the Sagas and the Vikings there existed an ice-bearing current on the east and northeast coasts of Greenland. But the current in those days cannot be compared to the present one, neither in extent nor in its importance to navigation. This fact I attribute to a more vivid circulation in the Irminger Sea in former days. According to the researchers of the Danish Ingolf expedition, the bulk of the Gulfstream branch known as the Irminger current turns westward at the entrance to the Denmark Strait and runs along the east coast of Greenland forming the underlayer of the ice-bearing polar current. According to Hambergs investigation in 1883 this warm underlayer melts the ice of the polar current and the amount of drift-ice on the eastcoast of Cape Dan in lat. 65 1/2º will vary with the strength of the Irminger current. South of Cape Farewell the ice turns west and northwest collecting outside the sosuthwestern coast of Greenland (Juliane-haabs Distrikt). Here 8-9 centuries ago the Icelandic colonists found an open sea. Now it is blocked by ice all summer because the Irminger current is too weak to melt de ice before it reaches Cape Farewell.

A small increase in the temperature of the under layer, or a stronger influx of Gulf stream water, or a stronger oscillation in the border-stratum causing a more vivid contact of the waters of the two currents would scatter the drift-ice so that the neighbourhood of Cape Farewell would be free from ice and the deep sounds between that island and the main land open to navigation. Later we shall see the importance of these sounds for the journeys of the Viking-settlers.

The formation of the coast in the lat. of Cape Dan causes the drift-ice to scatter after the passage of the Denmark Sound. The scattering of the ice and the action of the Irminger current which still in its full force crosses over from Iceland to Greenland makes the neighbourhood of Angmangsalik (Cape Dan) more accessible from the east than the southernmost point of Greenland<./p> Nordenskiöld was the first in modern time to profit by this when in 1883 he broke through the thin ice-layer outside Cape Dan and anchored his ship "the Sophia" in King's Oscar's harbour. (lat. 65º 35'). The stronger development of the Irminger current a thousand years ago brought two important consequences:

  1. The climate of Österbygden (the eastern settlement) was more temperate because the sea coast was free from ice, whereas the district of Julianehaab has an ice-bound sea in front and the inland-ice behind.

  2. As the ice did not go round Cape Farewell and enter Davis Strait, Baffin Bay and the Labrador-current were also relatively free from ice. This again influenced the climate of New Foundland and North America. It is also probable that the warm under current which runs through Davis Strait, like the Irminger current and the rest of the western Gulf stream-branches, was otherwise developed in those days. In other words: that the polar ice then melted at higher latitude than now.

At the end of the Middle-ages a change came in these conditions, which can only be explained by an alteration in the oceanic circulation. Such changes in the oceanic circulation will of course be more perceptible in the border-areas where the waning Gulf stream branch contents with currents of the northern origins as in Cattegat, the Baltic, Baffin Bay and at the south-point of Greenland. It is inconceivable that a state of equilibrium lasting through thousands of years should exist in those parts. Even now the conditions, especially the ice conditions, vary greatly from year to year in these seas. In Greenland there are good ice-years and bad ones. Now I will show the conditions in south Greenland in a good year like 1883 when Nordenskiöld on the Sophia landed at Fredriksdal and penetrated into the sounds north of Cape Farewell which had not been navigated by European ships since the days of the Vikings. Then I will give an instance of the conditions and the route of navigation in a bad year like 1902 as described by the Danish archeologist Captain Bruun.

Finally I will draw a comparison between these conditions and those which prevailed a thousand years ago when Iceland and Greenland were colonized and the Norsemen discovered America. In our time the east coast of Greenland from 65º lat. to Cape Farewell is almost inaccessible.

In good years the pack-ice may form a narrow belt along the coast. But the pressure of this ice-girdle, which is packed close to the coast whenever the wind blows in that direction, is almost more formidable to navigators than in bad years when the ice spreads for miles over the sea but generally leaves an open channel along the shore. This channel was used by the Danish expeditions under Graah, Holm and Garde o.a. Nansen too used this channel to get to the point from whence he started on his ice-wandering after he had landed on the drift-ice and carried his boats across it, just as they did in cases of emergency in ancient times, as is told in Kungaspegeln (the King Mirror) from the 13th century. Doubtless 600-700 years ago it was at times dangerous and even impossible to penetrate to the east coast of Greenland if it happened to be a bad ice-year.

But it must be remembered that in the Viking-age such years were exceptions and not the rule as is now the case. In spite of the strong tidal currents the sounds between Cape Farewell and the mainland are now always blocked by drift-ice which is crammed into their eastern inlets by the polar current outside. West of Cape Farewell there is the great fjord-district with the settlements of the ancient "Eystribyggd". All summer the Bay is blocked by drift-ice, and navigation is generally impossible till authum and then only by circuitous routes as shown by the dotted lines in the map of plate 11.

Circumstances being exceptionally favourable, Nordenskiöld was able to get to Julianehaab as early as the 17th June 1883. It is generally necessary to wait till late in summer and, working through the ice-girdle, make the coast by the northliest route through Nunarsiut Sound then go south-wards on an inner route along the coast of Julianehaab and Fredriksdal which is the farthest accessible settlement. From here the expeditions of Wallö, Giesecke, Graah, Holm and Garde in Eskimo boats penetrated through the sounds north of Cape Farewell: the Ikerasak, the Ikek, the Tunua, the Kipisak a. o. which, though never sounded, were found to be navigable up to their eastern inlets, where the ice of the polar current was encountered. In spite of the favourable conditions in 1883 Nordenskiöld had no better luck. He was turned back by the ice when trying to penetrate through the sounds and was unable to reach the east coast. Such are the conditions in a good ice-year. The ice-charts of 1903 and Captain Bruun's description of his journey to Greenland in the summer 1903 show how the navigation must be performed in a bad year.

"Cape Farewell as usual lay shrouded by heavy mist from our sight (in May 1903). We put into Davis Sound and very soon encountered the great ice. Having made Cape Farewell you follow the ice-border till south Nunarsäut, at the earliest, you may break through the ice. South of that headland you change your course making the coast in a curved line. "Commander Norman says: "East of Cape Farewell the ice presses continuously on to the coast so that it must be regarded as impossible to reach it from the south. West of Cape Farewell the ice also presses on to the coast, part of the year, and makes navigation difficult, but as a rule this only concerns the harbours in Julianehaab Bay, for as soon as Nunarsiut (Cape Desolation) is passed the current heaves the coast and the ice begins to scatter, so that only in bad years and after continuous sea-wind the sailor will be troubled by it. "

Great indeed is the difference between the experiences of those modern travellers and those of the Vikings as told in the Sagas. Eric Röde's discovery of Greenland is described in this manner:

"Erik came from the sea to land at the middle-glacier and the place called "Blåserk" (Black Sark) from thence he went south along the coast to see if the land was habitable. The first year he wintered on Erik's Island. In the following spring he went to Erik's fjord and settled there. That summer he journeyed to the western Wilderness… The second winter he spent on Eriks-holme at Nvartsgnipa, but the third summer he went north as far as Snefjeld and into the Rafnsfjord; he then thought that the inmost creek of the Eriksfjord lay just opposite to the place he had reached. He then turned back and spent the third winter on Eriks Island in the mouth of the Erik's fjord. "

It is inconceivable that Eric should have carried out this program without the greatest hindrance from the ice in the Julianehaab bay if the ice-conditions had been the same then as now. But if drift-ice existed in these parts in Eric's time, the Sagas do not mention it. Nor is it mentioned by any Sagas from the Viking-age. As my knowledge of the Icelandic Sagas is not sufficient to authorize such a statement, I asked for information from Professor Finnur Jonsson of Copenhagen in this matter. By Professor Jonsson's leave I here give an extract of the letter containing his answer to my question:

"With regard to your question I can tell you that there is no mention of ice in the original records of the journeys to Wineland. They go from Greenland to Wineland as if there was no question of difficulties from the ice. Indeed there is no hint at all of such hindrances on the coast of the ancient Österbygd. This has always struck me when thinking of the present conditions. The spread of colonization from Ikigait (Herjolfsnes) up to Erik's fjord has always appeared more natural to me, provided they could get into the inner fjords directly from the sea. I think it would was much likely that the colonization should have spread southwards from the Erik's fjord to Ikegait, by land. Judging from present conditions, however, we must surmise this to have been the case. "

G. Brynjulfsson in a lecture to Nordisk Oldskrifts Forening 1871, pointed out that the colonists in Greenland experienced little difficulty from the ice in their hunting expeditions to Baffin Bay. In Nordr-setudrapa (the 11th century) there is no mention of ice in these northern parts though dangers arising from wind and waves are dwelt upon. The Norsemen possessed two fishing- and hunting-places: Greipar and Furdudustrandir on Baffin Bay. South of these was Helluland. He mentions the rune-stone that was found on an island 25 miles north of Upernivik. This stone was put up by Erling Sivatsson "Loverdag for Gangdag" (25th of April, 1135), viz. at a time of year when this place is inaccessible nowadays. (The deciphering of this rune-stone is however disputed). Björn Jonsson's version of the Hausbook (but not the Hauksbook as it now exists) describes an adventurous journey in 1266 or 1271 to Smith's Sound and further on an open sea. Eskimoes were first encountered at Smith's sound (Krogsfjordsheden?). Their invasion into Greenland appears to have commenced in the 14th or at the end of the 13th century. Reading the ancient records in chronological order we find:

  1. That the Sagas proper from the 9th to the close of the 12th century never mention that the Norsemen were hindered by ice in their journeys to Österbygden while still adhering to the old navigation route "the Eriksstefna". Eric himself spent 3 successive winters on the islands in the Julianehaab bay and starting from thence every summer explored the country. This cannot be explained otherwise than by assuming that the polar ice did not reach Cape Farewell and the west coast of Greenland in those days.

  2. In the "Kungaspegel" from the 13th century we are told that those who sail for Greenland encounter much ice in the sea. Navigators are warned not to make the east-coast too soon on account of the ice; still there is no new route recommended then.

The only mention of icebergs I can find in the older writings is from the Kungaspegel and runs thus:

"There is yet another kind of ice in that sea (the Greenland Sea) which is of different shape and called "falljaccla" (falling glacier) by the Greenlanders. It has the appearance of a mountain rising out of the sea and it never mixes with other ice but keeps to itself. "

Considering the part ice-bergs play in the accounts of all modern travellers, we must conclude that in the Viking-age they were very rarely seen on the south-coast of Greenland. On the east-coast matters were different. Even in the 10th century the east-coast of Greenland was a wilderness, the refuge of a few outlaws who settled there. The landing was dangerous on account of the ice, partly drifting down from the Denmark Sound and partly formed by the calving of the glaciers on the coast. In the "Floamanna Saga" we are told of Thorgils, and Icelander who in 998 went to Greenland to visit Eric Röde but was wrecked on the east-coast where he was hospitably received by his countryman Rolf, an outlaw, who had settled there. After many adventures Thorgils and Rolf at last reached a sound which led to the "Österbygd". In the words of the Saga:

"peir fara sudr fyrir land ok koma i fjord og lögdu i laegi. "

According to the commentor of Gr. Hist. Mindesm. The translation is that they sailed "round the headland", meaning Cape Farewell. This translation is quite unwarranted. The sound may as well have been the neighbouring Ikek or Allumlengri as any of the more distant ones west of Cape Farewell. The Saga tells further how, having anchored, they saw a ship putting into de fjord from the sea which kept the same course. It was Thorsten Hvide, the foster-father and stepfather of Thorgils, who had sailed from Norway and Iceland in search of Thorgils. Together they went to Eric Röde.