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Freeze-Up: Hudson Bay and Approaches Englacement: La Baie

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Freeze-Up: Hudson Bay and Approaches Englacement: La Baie Freeze-up: Hudson Bay and Englacement: La baie d’Hudson et ses Approaches abords Air temperatures were 1-4°C above normal for most of Au cours du mois de novembre, les températures de l’air ont été Hudson Bay during the month of November, except near au-dessus de la normale, soit de 1 à 4°C de plus, dans la normal for Hudson Strait / Frobisher Bay and 1-3°C below majeure partie de la baie d’Hudson, sauf dans le détroit d’Hudson normal for Cumberland Sound. In early December, air et la baie Frobisher, où elles étaient près de la normale, ainsi que temperatures were 2-6°C above normal in northeast Hudson dans la baie Cumberland où elles étaient de 1 à 3° C au-dessus Bay and Hudson Strait but 1-4°C below normal along the de la normale. Au début de décembre, les températures de l’air southwest shore of Hudson Bay and James Bay. Air étaient de 2 à 6° C au-dessus de la normale dans le nord-ouest temperatures were everywhere 2-5°C below normal during the de la baie d’Hudson et dans le détroit d’Hudson mais de 1 à 4° C last two weeks of December. As a result of the above normal au-dessous de la normale le long des côtes ouest de la baie November and early-December air temperatures, freeze-up d’Hudson et de la baie James. Au cours des deux dernières was delayed almost everywhere by 1-2 weeks. Measured ice semaines de décembre, les températures de l’air étaient partout thicknesses at Coral Harbour were approximately 15cm below de 2 à 5° C au-dessous de la normale. En raison des normal in early November, and predicted ice thicknesses were températures au-dessus de la normale observées en novembre 7-8cm below normal. Both measured and predicted values et au début de décembre, presque partout l’englacement a été recovered to near-normal values by mid-December. retardé d’une ou de deux semaines. Au début de novembre, les épaisseurs mesurées de la glace à Coral Harbour étaient November: Ice growth was slower-than-normal for almost all inférieures à la normale, soit environ 15 cm de moins, et parts of Hudson Bay and its approaches, although ice formed l’épaisseur prévue de la glace était de 7 à 8 cm au-dessous de la slightly earlier than normal along the southwest coast of normale. À la mi-décembre, les valeurs mesurées et prévues se Southampton Island at the end of October and also along the sont rétablies près des valeurs normales. southwest shore of Hudson Bay and along the Ungava Bay coast during the first two weeks of November. Ice growth also Novembre: La formation de la glace a été plus lente que la began early in Cumberland Sound. New ice started to form normale dans presque toutes les sections de la baie d’Hudson et along the shores of Southampton Island, in Roes Welcome de ses abords, bien que la glace se soit formée légèrement plus Sound and along the western shore of Hudson Bay during the tôt que la normale le long des côtes sud-ouest de l’île de last week in October. By mid-November, new ice also Southampton, à la fin d’octobre, et aussi le long de la rive sud- extended along the southern shore of Hudson Bay and had ouest de la baie d’Hudson et de la rive de la baie d’Ungava, au formed along the south and western shores of Ungava Bay cours des deux premières semaines de novembre. La formation and in Frobisher Bay. Grey-white ice dominated Roes de la glace a également commencé tôt dans le détroit de Welcome Sound and grey ice extended south of Southampton Cumberland. Pendant la dernière semaine d’octobre, de la glace Island. Cumberland Sound was completely covered with grey nouvelle s’est formée le long des rives de l’île Southampton, dans and grey-white ice and an area of grey and grey-white ice had le détroit de Roes Welcome et le long de la rive ouest de la baie formed in western Davis Strait along the Baffin Island coast. d’Hudson. À la mi?novembre, de la glace nouvelle s’est aussi By the end of November, the ice to the south of Southampton formée le long des rives sud de la baie d’Hudson et le long des Island had thickened to grey-white ice, and grey ice extended rives sud et ouest des baies d’Ungava et de Frobisher. Des along the western shore of Hudson Bay and filled Frobisher glaces blanchâtres ont recouvert le détroit Roes Welcome et des Bay. New and grey ice extended along the south shore of glaces grises se sont étendues au sud de l’île Southampton. Le Hudson Bay, along the west and south shores of James Bay, détroit de Cumberland était complètement recouvert de glace and along the southwest coast of Baffin Island. A tongue of grise et de glace blanchâtre et une zone de ces mêmes types de new and grey ice also extended into the western part of glaces s’est formée dans la section ouest du détroit de Davis le Hudson Strait. long de la rive de l’île de Baffin. À la fin de novembre, les glaces situées au sud de l’île Southampton s’étaient amincies en glaces December: Ice growth was slower-than-normal at the blanchâtres, et la glace grise s’étendait le long de la côte ouest beginning of December but accelerated during the middle and de la baie d’Hudson et recouvrait la baie Frobisher. De la glace latter thirds of the month. By mid-December, Hudson Bay, nouvelle et de la glace grise s’étendaient le long de la rive sud de Hudson Strait, Ungava Bay, and Davis Strait were completely la baie d’Hudson, le long des rives ouest et sud de baie James, ice-covered (2 weeks later than normal) and new ice had et le long de la rive sud-ouest de l’île de Baffin. Une langue de formed along the Labrador coast. By the end of December, ice glace nouvelle et de glace grise s’étendait également dans la concentrations had recovered to near-normal values section ouest du détroit d’Hudson. everywhere. The grey-white ice covering Hudson Bay, Hudson Strait, and Davis Strait was thickening to first-year ice Décembre: La formation de la glace a été plus lente que la while the ice along the Labrador coast had thickened to a normale en décembre mais s’est accélérée au cours du milieu et mixture of new, grey, and grey-white ice. Normally at the end du dernier tiers du mois. À la mi-décembre, la baie d’Hudson le of December, however, Hudson Bay would be entirely détroit d’Hudson, la baie d’Ungava et le détroit de Davis étaient covered with first-year ice and grey-white ice would complètement recouverts de glace (deux semaines plus tard que predominate along the Labrador coast. la normale) et de la glace nouvelle s’est formée le long de la côte du Labrador. À la fin de décembre, les concentrations se sont January: By the end of January, medium first-year ice rapprochées des valeurs normales presque partout. La glace extended from Davis Strait towards the northern tip of blanchâtre qui couvrait la baie d’Hudson, le détroit d’Hudson, et Labrador and also prevailed in Hudson Bay (except for areas le détroit de Davis s’est épaissie en glace de première année et of thin first-year ice in western parts of the bay and in James les glaces situées le long de la côte du Labrador se sont Bay). Hudson Strait and Ungava Bay were primarily covered épaissies pour former un mélange de glace nouvelle, de glace in thin first-year ice. A tongue of thin first-year ice, flanked on grise et de glace blanchâtre. Normalement, toutefois, à la fin de the west by grey ice and on the east by grey-white ice, décembre, la baie d’Hudson aurait dû être entièrement couverte extended down the Labrador coast. An area of 3 tenths old ice de glace de première année et la glace blanchâtre aurait dû lay just north of Caper Dyer and a trace of old ice extended prédominer le long de la côte du Labrador. down from this area to 61°N. The Petermann Ice Island, a large tabular iceberg that calved off the Petermann Glacier in Janvier: À la fin de janvier, des glaces moyennes de première northwest Greenland in summer 2008, lay just off Cape Dyer. année s’étendaient du détroit de Davis jusqu’à la pointe nord du Labrador et prédominaient dans la baie d’Hudson (sauf dans le cas des zones de glace mince de première année dans les sections ouest de la baie et dans la baie James). Le détroit d’Hudson et la baie d’Ungava étaient principalement couverts de glace mince de première année. Une langue de glace mince de première année, flanquée à l’ouest de glace grise et à l’est de glace blanchâtre, s’étendait jusqu’à la côte du Labrador. Une zone de trois dixièmes de vieille glace se trouvait juste au nord du cap Dyer et une trace de vieille glace s’étendait de ce secteur jusqu’à 61° N. L’île de glace Petermann, un gros iceberg tabulaire qui s’est détaché du glacier Petermann au nord-ouest du Groenland en été 2008, flottait au large du cap Dyer.
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