The Fate of Hudson Bay Lowlands Palsas in a Changing Climate

Figures & data

FIGURE 1. The study area—the Hudson Bay Lowlands of northern Ontario, Canada.

TABLE 1 Criteria for palsas for the Hudson Bay Lowlands.

FIGURE 2. Temperature trends for Big Trout Lake for the period 1951–2010. Due to incomplete data, the following years could not be applied: 1990, 1992–1994, 1996–1997, 2006, and 2008–2010.

Table 2 Evaluation of four weather/climate stations in the HBL with respect to identified criteria for palsas. Lansdowne House and Big Trout Lake are located south of the southern extent of palsas, whereas Peawanuck and Fort Severn are located along the Hudson Bay coast within 20 km of the observed palsas (Tam, 2009).

TABLE 3 Observed climate and downscaled climate projections for Big Trout Lake and Lansdowne House.

TABLE 4 Projected MAAT values for the four weather stations.

TABLE 5 Projected number of days below -10 °C per year for Big Trout Lake and Lansdowne House.

Tam, A. , 2009: Permafrost in Canada's Subarctic Region of Northern Ontario. Master's thesis, Graduate Department of Geography, University of Toronto, Scarborough, Ontario, Canada.

 Google Scholar