Climate Variability and Climatic Change: Potential Implications for Hudson Bay Coastal Communities

Laidler, Gita J.; Gough, William A.

doi:10.1080/789610221

Cited by 13 publications

(9 citation statements)

References 27 publications

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“…This study employed the use of local knowledge data sets to determine trends in river-ice breakup dates for this region for three local rivers (the Moose, Albany, and Attawapiskat). In this work, these trends will be examined to provide insight into the changing nature of river ice in this region, which is of utmost importance to First Nations peoples, who depend on river ice for accessibility in the winter and spring months (Tsuji and Nieboer, 1999;Laidler and Gough, 2003).…”

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confidence: 99%

Trends in River-Ice Break-up Data for the Western James Bay Region of Canada

Ho¹,

Tsuji²,

Gough³

2005

Polar Geography

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Trends in river-ice break-up date for the Moose, Albany, and Attawapiskat rivers located in the western James Bay region were examined. Regression analyses revealed several significant, but weak, linear relationships between river ice break-up date and calendar year. The directions of these relationships were also inconsistent, and so the results of the statistical analyses were considered to be inconclusive. Local and indigenous knowledge broadened our analyses with more information on changes in the timing of freeze/thaw cycles. Relatively rapid changes in climate can create problems for conventional approaches including statistical analyses, which require large data sets and long-term trends. The study indicates that while trends in river ice break-up were weak, very recent changes in break-up characteristics (signaled through local knowledge) showed that potentially drastic and rapid changes have occurred within the past few years. Future research in climate and river-ice studies ought to incorporate other knowledge systems to understand important indicators of climate changes.

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confidence: 99%

Trends in River-Ice Break-up Data for the Western James Bay Region of Canada

Ho¹,

Tsuji²,

Gough³

2005

Polar Geography

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“…The local ecosystem and local human population of the Hudson Bay region have adapted to this harsh climate (Laidler and Gough, 2003). Polar bears, in particular, have adapted to the seasonality of the sea ice.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, some 7500 Cree Indian people, 10500 Inuits (Eskimo), and approximately 6000-7000 non-native people inhabit the Hudson Bay area. The traditional livelihoods of those aboriginal people are intertwined with the presence of sea ice and they will inevitably be directly affected by the potential changes of humaninduced climate change on the sea-ice cover (Laidler and Gough, 2003).…”

Section: Introductionmentioning

confidence: 99%

Interannual Variability of Hudson Bay Ice Thickness

2004

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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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“…Concerns over impacts of climate change (Laidler and Gough, 2003) motivate best use of extant data to provide an understanding of anomalous behavior in this region. While a tide gauge situated at Churchill in southwestern Hudson Bay has measured sea level fluctuations since 1940, and the Gravity Recovery and Climate Experiment (GRACE) spacecraft have observed changes in the mass of ocean and ice over the CIS since 2002, only a few studies have made use of these data to understand the nature of variability in the CIS.…”

Section: Introductionmentioning

confidence: 99%

A wind-driven nonseasonal barotropic fluctuation of the Canadian inland seas

Piecuch

Ponte

2015

Ocean Sci.

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Abstract.A wind-driven, spatially coherent mode of nonseasonal, depth-independent variability in the Canadian inland seas (i.e., the collective of Hudson Bay, James Bay, and Foxe Basin) is identified based on Gravity Recovery and Climate Experiment (GRACE) retrievals, a tide-gauge record, and a barotropic model over 2003-2013. This dominant mode of nonseasonal variability is correlated with the North Atlantic Oscillation and is associated with net flows into and out of the Canadian inland seas; the anomalous inflows and outflows, which are reflected in mean sea level and bottom pressure changes, are driven by wind stress anomalies over Hudson Strait, probably related to wind setup, as well as over the northern North Atlantic Ocean, possibly mediated by various wave mechanisms. The mode is also associated with mass redistribution within the Canadian inland seas, reflecting linear response to local wind stress variations under the combined influences of rotation, gravity, and variable bottom topography. Results exemplify the usefulness of GRACE for studying regional ocean circulation and climate.

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Climate Variability and Climatic Change: Potential Implications for Hudson Bay Coastal Communities

Cited by 13 publications

References 27 publications

Trends in River-Ice Break-up Data for the Western James Bay Region of Canada

Trends in River-Ice Break-up Data for the Western James Bay Region of Canada

Interannual Variability of Hudson Bay Ice Thickness

A wind-driven nonseasonal barotropic fluctuation of the Canadian inland seas

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