Atmospheric forcing of sea ice in Hudson Bay during the fall period, 1980–2005

Hochheim, Klaus P.; Barber, David G.

doi:10.1029/2009jc005334

Cited by 79 publications

(61 citation statements)

References 48 publications

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“…Finally, the results for the Hudson Bay area produced using NSIDC passive microwave-based datasets tend to be in good agreement with results produced using sea ice concentration datasets from other sources (e.g. Hochheim and Barber 2010).…”

Section: Methodssupporting

confidence: 68%

Climate change and sea ice: Shipping accessibility on the marine transportation corridor through Hudson Bay and Hudson Strait (1980–2014)

Andrews

Babb

Barber

2017

Elementa: Science of the Anthropocene

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Andrews, J, et al 2017 Climate change and sea ice: Shipping accessibility on the marine transportation corridor through Hudson Bay and Hudson Strait (1980 -2014). Elem Sci Anth, 5: 15, DOI: https://doi.org/10.1525/elementa.130 Introduction A growing body of scientific evidence suggests that climate change is having a significant impact on sea ice conditions throughout the Canadian Arctic (Comiso, 2012;Vaughan et al., 2013). In the waters of Hudson Bay and Hudson Strait, climate change appears to be driving a trend towards longer ice-free periods during the summer and fall (Hochheim and Barber, 2014;Kowal et al., 2015). Sea ice is a defining element of the environment and culture of the Bay and Strait (e.g. Laidler at al., 2010;Joly et al., 2011;Durkalec et al., 2015), and climate-driven changes to ice conditions could produce enormous change in the region. One facet of this change is the potential growth in the shipping industry of the area, as lengthening ice-free periods enable longer shipping seasons (Pizzolato et al., 2014). This paper focuses on a scientific examination of sea ice timing along the shipping corridor through Articles in the scientific literature (e.g., Hochheim and Barber, 2014;Kowal et al., 2015) tend to define the border between the Bay and Strait as a line running north from the northwestern tip of mainland Quebec to the southwestern tip of Baffin Island. According to that definition the entire shipping corridor to the Port of Churchill is contained within the Bay and Strait. In this analysis, the portion of the corridor falling within the traditional area of Hudson Bay was further subdivided into two sections, "Hudson Bay" and the "Hudson Islands" (Figure 1), so as to examine differences in ice timing between the two sections.

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Section: Methodssupporting

confidence: 68%

Climate change and sea ice: Shipping accessibility on the marine transportation corridor through Hudson Bay and Hudson Strait (1980–2014)

Andrews

Babb

Barber

2017

Elementa: Science of the Anthropocene

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“…Hudson Bay sea ice has also undergone a shift toward reduced sea ice area during the fall months since the 1990s. Hochheim and Barber (2010) investigated fall (October and November) sea ice area trends in Hudson Bay from 1980 to 2005 and found large decreases ranging from 23.3 % to 26.9 % decade −1 . A significant sea ice event during the IPY was the 2007 clearing of the Northwest Passage route through the western Parry Channel for the first time in the satellite era.…”

Section: Sea Icementioning

confidence: 99%

Variability and change in the Canadian cryosphere

et al. 2012

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During the International Polar Year (IPY), comprehensive observational research programs were undertaken to increase our understanding of the Canadian polar cryosphere response to a changing climate. Cryospheric components considered were snow, permafrost, sea ice, freshwater ice, glaciers and ice shelves. Enhancement of conventional observing systems and retrieval algorithms for satellite measurements facilitated development of a snapshot of current cryospheric conditions, providing a baseline against which future change can be assessed. Key findings include: 1. surface air temperatures across the Canadian Arctic exhibit a warming trend in all seasons over the past 40 years. A consistent pan-cryospheric response to these warming temperatures is evident through the analysis of multi-decadal datasets; 2. in recent years (including the IPY period) a higher rate of change was observed compared to previous decades including warming permafrost, reduction in snow cover extent and duration, reduction in summer sea ice extent, increased mass loss from glaciers, and thinning and break-up of the remaining Canadian ice shelves. These changes illustrate both a reduction in the spatial extent and mass of the cryosphere and an increase in the temporal persistence of melt related parameters. The observed changes in the cryosphere have important implications for human activity including the close ties of northerners to the land, access to northern regions for natural resource development, and the integrity of northern infrastructure.

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“…However, increases in temperature of 0.5 to 1.0 °C per decade have been observed in Churchill and at other locations in the HBL since the early 1990s (e.g. Hochheim and Barber, 2010;Galbraith and Larouche, 2011). Total annual precipitation, averaged for the period 1960-1990, was 355.2 mm per year, with approximately 55% falling as snow.…”

Section: Study Region and Site Descriptionmentioning

confidence: 99%

“…The concentration, extent, and duration of sea-ice cover on Hudson Bay have decreased significantly over the past three decades (Gough et al, 2004;Hochheim et al, 2011;Hochheim and Barber, 2014), resulting in a positive feedback cycle that has accelerated warming over land surfaces (Hochheim and Barber, 2010). While there is little evidence that warmer temperatures have thus far impacted permafrost extent in the HBL, likely because of thermal lags between changes in air temperature and ground ice conditions (Gough and Leung, 2002; but see Wolfe et al, 2011), there are several examples of recent biological changes within aquatic ecosystems in the region.…”

Section: Introductionmentioning

confidence: 99%