Shallow (12 cm) ground temperatures for 7 ice-wedge troughs and 2 polygon centres in a high-centred polygon system in Fosheim Peninsula, Ellesmere Island, Nunavut, Canada ...

• Main Authors: Ward Jones, Melissa, Amyot, Frances, Pollard, Wayne
• Format: Dataset
• Language: unknown
• Published: Canadian Cryospheric Information Network 2020
• Subjects: Climate change; Ellesmere Island; Eureka; Fosheim Peninsula; Ice; Nunavut; permafrost; polar desert; wedge*
• Online Access: https://dx.doi.org/10.21963/13135; https://www.polardata.ca/pdcsearch?doi_id=13135

Near surface ground temperatures were collected at the centre of 7 ice-wedge troughs and 2 polygon centres using iButton thermochron temperature sensors. Each sensor was buried at 12 cm depth in a weather proof case. Ice-wedge troughs within this study had varying dimensions and are as followed: IW1 was 2.00 m wide and 0.25 m deep, IW2 was 6.00 m wide and 0.82 m deep, IW3 was 11.00 m wide and 1.00 m deep, IW4 was 9.00 m wide and 0.85 m deep, IW5 9.00 m and 0.57 m deep, IW6 was 6.00 m wide and 0.42 m deep and finally, IW7 was 6.00 m wide and 0.37 m deep. P1 was the centre of a polygon with an area of 270 m^2, P2 was 266 m^2. Our study (Ward Jones et al., in review) found that geomorphic changes caused by degrading ice-wedge generated new responses in vegetation cover, soil moisture and snow distribution. These new interactions generated a range of ground temperatures between all our sites: a 5.1 °C range annually, 2.5 °C in summer and 15.2 °C in winter. Note that P1, IW1, IW2, IW3 was set up initially on 3 ... : Shallow (12 cm) ground temperatures were collected as part of a study assessing the impacts on ice-wedge trough morphology on surficial conditions and near ground surface temperatures in a high-centred polygon system. This collected data is part of M. Ward Jones’s Ph.D. research at McGill University investigating how climate change is driving landscape change within a high Arctic polar desert system with ice-rich permafrost. The Research Support Opportunity in Arctic Environmental Studies provided by Association of Canadian Universities for Northern Studies (ACUNS) awarded to M. Ward Jones enabled this research to take place in the vicinity of Eureka Weather Station on Ellesmere Island, Nunavut. Other student support was provided by the Eben Hopson and David Erb Fellowships, the Fonds de Recherche du Quebec - Nature et Technologies (FRQNT) doctoral scholarship and Northern Scientific Training Program (NSTP). This research was also funded by Natural Sciences and Engineering Research Council (NSERC) and the ...