Interannual variability of Hudson Bay ice thickness

William A. Gough, Alexandre S. Gagnon, Ho Pang Lau

Research output: Contribution to journalArticle

Abstract

Seasonal sea ice in Hudson Bay plays a key role in determining the regional climatology. In this paper, the relationship between ice thickness with local surface air temperature and snow depth is explored at nine locations in the Hudson Bay region. A weak but statistically significant correlation was found between basin averaged ice thickness and concurrent surface air temperature. At the local scale, however, ice thickness correlated well with winter air temperature at only three measuring sites, explaining the poor relationship at the basin scale. A relationship was also identified between winter ice thickness and previous summer's air temperatures at two measuring sites, suggesting that preconditioning of Hudson Bay waters may play a significant role in sea-ice formation in some subregions of Hudson Bay. Simple and multiple linear regression analyses indicate that at the majority of the measuring sites, snow depth is a more important contributor to the inter-annual variability of ice thickness than winter air temperatures. The results of this study have important implications regarding the use of landfast ice thickness data to detect an early climate change signal over Hudson Bay.
Original languageEnglish
Pages (from-to)222-238
Number of pages17
JournalPolar Geography
Volume28
Issue number3
DOIs
Publication statusPublished - 2004
Externally publishedYes

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Hudson Bay
ice thickness
Ice
ice
air
air temperature
Air
Temperature
Ice Cover
Snow
sea ice
winter
surface temperature
snow
Meteorology
Climate Change
basins
basin
climate change
climatology

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Gough, W. A., Gagnon, A. S., & Lau, H. P. (2004). Interannual variability of Hudson Bay ice thickness. Polar Geography, 28(3), 222-238. https://doi.org/10.1080/789610188
Gough, William A. ; Gagnon, Alexandre S. ; Lau, Ho Pang. / Interannual variability of Hudson Bay ice thickness. In: Polar Geography. 2004 ; Vol. 28, No. 3. pp. 222-238.
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Gough, WA, Gagnon, AS & Lau, HP 2004, 'Interannual variability of Hudson Bay ice thickness' Polar Geography, vol. 28, no. 3, pp. 222-238. https://doi.org/10.1080/789610188

Interannual variability of Hudson Bay ice thickness. / Gough, William A.; Gagnon, Alexandre S.; Lau, Ho Pang.

In: Polar Geography, Vol. 28, No. 3, 2004, p. 222-238.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Interannual variability of Hudson Bay ice thickness

AU - Gough, William A.

AU - Gagnon, Alexandre S.

AU - Lau, Ho Pang

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AB - Seasonal sea ice in Hudson Bay plays a key role in determining the regional climatology. In this paper, the relationship between ice thickness with local surface air temperature and snow depth is explored at nine locations in the Hudson Bay region. A weak but statistically significant correlation was found between basin averaged ice thickness and concurrent surface air temperature. At the local scale, however, ice thickness correlated well with winter air temperature at only three measuring sites, explaining the poor relationship at the basin scale. A relationship was also identified between winter ice thickness and previous summer's air temperatures at two measuring sites, suggesting that preconditioning of Hudson Bay waters may play a significant role in sea-ice formation in some subregions of Hudson Bay. Simple and multiple linear regression analyses indicate that at the majority of the measuring sites, snow depth is a more important contributor to the inter-annual variability of ice thickness than winter air temperatures. The results of this study have important implications regarding the use of landfast ice thickness data to detect an early climate change signal over Hudson Bay.

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