65 Works

Canadian Ice Island Drift, Deterioration and Detection database (CI2D3 database)

Luc Desjardins, Anna Crawford, Derek Mueller, Ronald Saper, Correy Schaad, Emilie Stewart-Jones & Jeff Shepherd
Ice islands are massive, tabular icebergs which calve from ice shelves and floating glacier tongues. The ability to identify, monitor and predict the drift and deterioration of these immense ice hazards is crucial for mitigating the associated risks to marine navigation and offshore infrastructure in their vicinity. A joint initiative between the Water and Ice Research Lab (Carleton University) and the Canadian Ice Service (Environment Canada) was established in 2014 to extract pertinent information from...

Deterioration data collected from 'Petermann Ice Island-A-1-f' while grounded near Qikiqtarjuaq, Nunavut, 2015 - 2017

Derek Mueller, Anna Crawford, Gregory Crocker & Laurent Mingo
A data collection program was carried out between October 2015 and September 2017 to monitor the thinning and overall deterioration of “Petermann Ice Island (PII)-A-1-f”. This large, tabular iceberg was a fragment of the 2012 Petermann Glacier calving event. Four field teams visited the ice island, and a stationary ice penetrating radar (sIPR) was installed on PII-A-1-f in October 2015 while the large, tabular iceberg was grounded near Qikiqtarjuaq, NU. The instrument was designed by...

Solar Radiation Data in Cambridge Bay - CHARS Renewable and Alternative Energy priority

Meaghan Bennett, Michael Brown & Crystal Qaumariaq
Two pyranometers were installed on a tripod, one horizontally and one at 69 degrees to the horizontal (equal to the latitude). A snow depth sensor was also installed on the tripod. A solar tracker with a shaded pyranometer and pyrheliometer, in order to measure diffuse and direct solar radiation, is planned for spring 2015. Global horizontal and tilted radiation measured at 1 minute intervals.

Spatial distribution of phytoplankton chlorophyll a concentrations in the Southeastern Beaufort Sea in 2002, 2003 and 2004

Serge Demers, Sonia Brugel & Christian Nozais
This dataset consists of vertical profiles of discrete depth sampled over the Southeastern Beaufort Sea for chlorophyll a concentration of different size fractions: >0.7µm, >5µm and >20µm. Sampling took place from September to October 2002, from September to November 2003 and from June to August 2004. Chlorophyll a concentrations were determined by fluorimetry.

CASES 0202-Northwest Passage CTD data

Yves Gratton, Pascal Guillot, Annie Simard, Marie Robert & Marie-Emmanuelle Rail
The CTD data was obtained during LEG 00 of the 2002 CASES scientific cruise #0202. This Leg was carried out from September 20th 2002 to October 17th 2002 aboard the CCGS Pierre Radisson. There were 138 CTD casts in Leg 0. Two casts, associated to 2 oceanographic stations, are located in the Northwest Passage research area. The following parameters were measured: temperature, conductivity and pressure (with a Sea-Bird 911 probe), oxygen (Sea-Bird 43), fluorescence (Seapoint...

Preliminary freshwater sampling of selected streams in the watershed of Greiner Lake, Cambridge Bay, Nunavut.

Donald McLennan, Ioan Wagner & Melissa Lafrenière
Greiner Lake and its watershed, and therefore the properties of their waters, have a great importance to the local economy of Cambridge Bay, Nunavut, by the commercial arctic char fishery that exists here. As part of a preliminary investigation, the freshwater of streams running between lakes and ponds of the watershed, and from Greiner Lake to the ocean, have been sampled by performing measurements of pH, temperature, conductivity, TDS, as well as by collecting water...

Vegetation regeneration in minerotropic rich peatlands burned between 2011 and 2016 in the Northwest Territories

Line Rochefort & Mélina Guêné-Nanchen
Vegetation data were collected in 27 burned rich peatlands along an chronosequence of fire age (2011 (n=10), 2014 (n=14), 2015 (n=4)) and 18 natural peatlands for reference during June and July 2016. Percentages of cover of bryophytes and vascular were evaluated by group and for all the species. Mean relative position to the water table was measured for fen true bryophytes. Vegetation data were collected in 12 plots within each peatlands (6 plots on hummocks,...

CTD sampling in Cambridge Bay, Dease Strait and Queen Maud Gulf, Nunavut

Donald McLennan, Casey Hubert, C.J. Mundy & Johann Wagner
Conductivity, temperature, as well as other properties at different depths are important characteristics of seawater, with significant effects on the ecology of the ocean in the Arctic. To gain an idea about these seawater properties south of Victoria Island, CTD samplings have been performed from the Martin Bergmann research vessel in the Cambridge Bay, Dease Strait and Queen Maud Gulf by CJ Mundy of the University of Manitoba. Additionally, in order to determine the ideal...

Active acoustic data from Kongsfjorden, Svalbard

Jorgen Berge, Maxime Geoffroy & Geir Johnsen
The presence of Arctic pelagic organisms during the polar night is poorly documented, especially as boreal Atlantic species are expanding their range northward. Patterns of diel vertical migration (DVM) of crustaceans enhancing the biological pump are characteristic, yet poorly known processes of high latitude fjords of Svalbard. This dataset was collected in Kongsfjorden, Svalbard, during January 2017 to document the distribution of pelagic organisms using acoustic instruments. An automated surface vehicle was equipped with an...

Geo-referenced digital photographs with associated GPS waypoints and tracks for terrestrial ecosystem types from south-eastern Victoria Island, 2013

Donald McLennan, Christopher Buddle & Johann Wagner
Geo-referenced digital photographs with the associated GPS waypoints and tracks of various terrestrial ecosystem types have been taken during the summer of 2013 in south-eastern Victoria Island, around Cambridge Bay, Nunavut. The photographs, in combination with additional GPS waypoints and tracks, characterize site, soil and vegetation characteristics of the arctic landscape. The geo-referenced photographs and the GPS data will be entered in a GIS software and overlaid on satellite imagery. By matching pixel colours of...

Canadian Lake ice Database

Centre D'études Nordiques
The first version of CID contains in situ observations from 757 sites distributed across Canada, which were originally kept on digital or paper records at the Meteorological Service of Canada Headquarters and the Canadian Ice Service (CIS). The CID holds 63,546 records covering the period from ice season 1822-23 to 2000-01. An analysis of the database allows one to trace the temporal evolution of the ice networks. The freeze-up/break-up network of 2000-01 only represents 4%...

CASES 0303-Beaufort Sea CTD data

Yves Gratton, Pascal Guillot, Annie Simard & Jean-Éric Tremblay
The CTD data was obtained during LEG 01 of the 2003 CASES scientific cruise #0303. This Leg was carried out from September 8th 2003 to October 15th 2003 aboard the CCGS Amundsen. There were 37 CTD casts in Leg 1. Thirty-six casts, associated to 16 oceanographic stations, are located in the Beaufort Sea research area. The following parameters were measured: temperature, conductivity and pressure (with a Sea-Bird 911 probe), oxygen (Sea-Bird 43), fluorescence (Seapoint fluorometer),...

Investigation of the Toxic Effects of Mercury in Landlocked Arctic Char

Niladri Basu, Benjamin Barst, Paul Drevnick, Günter Köck & Muir Derek
Data collected from landlocked char in northern Canada and Greenland indicates that 30 percent of the populations surveyed exceed toxicity thresholds for Hg in fish. Collections were conducted in cooperation with the char "core" monitoring project led by Derek Muir. The lakes sampled (Small, 9-mile, North, Amituk) span a gradient of Hg contamination, allowing for the comparison of biological endpoints in char with low Hg concentrations to char with high Hg concentrations. Endpoints relate to...

Gastropod surveys in south-eastern Victoria Island

Josh Sullivan, Donald McLennan, Susan Kutz & Matilde Tomaselli
As the range of the muskox lungworms Umingmakstrongylus pallikuukensis and Varestrongylus nov. sp. on Victoria Island, Nunavut have recently expanded, a critical look at the distribution and abundance of their gastropod intermediate hosts is imperative for identifying regions susceptible to future parasite colonization. During July-September 2013, we sampled for gastropods at five terrestrial sites and five freshwater sites on south-eastern Victoria Island, near the hamlet of Cambridge Bay. At each terrestrial site four habitats were...

A high resolution multi-proxy record of pronounced recent environmental change at Baker Lake, Nunavut

Roberto Quinlan, Andrew Medeiros, Sarah Finkelstein & Charlotte Friel
Analyses of fossilized remains of chironomids and diatoms were conducted on a sediment core of 20 cm in length sampled at 0.5-cm intervals. A new surface sediment training set of subfossil chironomid assemblages from 65 lakes across the eastern Canadian Arctic generated a robust (r2 jack = 0.79) surface water paleotemperature transfer function. The transfer function was applied to stratigraphic intervals from the Baker Lake sediment core to generate a paleotemperature reconstruction of sub-decadal resolution....

Gridded climate data for Labrador and Northern Québec, 1948-2016

Robert Way, Philip Bonnaventure & Antoni Lewkowicz
Detailed climatological grids are needed for many applications, including permafrost prediction, ecological modelling and infrastructure planning. This study describes the creation of moderate-resolution gridded climate datasets covering the entire Labrador-Ungava region (50°-63°N) for a series of climate indices, including monthly air temperature, annual air temperature, freezing degree-days (FDDs) and thawing degree-days. Using a recently developed spatiotemporal infilling technique, temporally consistent climate grids spanning the 1948-2016 period were derived at a monthly resolution. Comparison against within-sample...

Patterns of shrub abundance and relationships with other plant types within the forest-tundra ecotone in northern Canada

Karen Harper, Amanda Lavallee & Pavel Dodonov
Throughout the forest-tundra ecotone where trees and tall shrubs are becoming more abundant, knowledge of associations between shrubs and surrounding vegetation could inform predictions of their changing relationships. We assessed shrubs in 1 x 1 m contiguous quadrats along two ~450 m transects across tundra and ecotone landscapes near Churchill, Canada to determine patterns in relation to lakeshore edges, soil pH, microtopography, and other plant groups. We used wavelet analysis to assess patterns and generalized...

Flowering phenology observations from 23 Arctic and alpine sites from 1992 through 2015

Janet Prevey
Advancing phenology is one of the most visible effects of climate change on plant communities, and has been especially pronounced in temperature-limited tundra ecosystems. However, phenological responses have been shown to differ greatly between species, with some species shifting phenology more than others. We analyzed a database of 42,689 tundra plant phenological observations to show that warmer temperatures are leading to a contraction of community-level flowering seasons in tundra ecosystems due to a greater advancement...

Establishing a long-term, river-based monitoring system for Arctic Char harvest in the Cambridge Bay area, Nunavut

Bobby Greenley, Brenda Sitatak, Les Harris, Tyler Jivan & Beverly Maksagak
This monitoring program will occur annually at commercial waterbodies, typically spanning from early July to late September. The initial length of the project will be seven years, reflecting given that the minimum number of years needed to collect catch-per-unit-effort (CPUE) data is five years. This will also allow for modifications to the study design and monitoring protocol. Hired monitors accompanied the fisher to the fishing site and recorded catch (number of fish) and effort (amount...

Devon ice cap glacier velocity map

Wesley Van Wychen, Luke Copland & David Burgess

Bathymetry of a section of east end of Cambridge Bay, near the future site of the sea water intake for CHARS, Cambridge Bay, Nunavut

Donald McLennan & Exp Geomatics Inc.
Sewage water in the hamlet of Cambridge Bay is collected in storage tanks outside of buildings and subsequently dumped by tanker trucks in a system of two sewage lagoons, where it is kept for a period of time. The partially treated sewage water is then flown through a wetland and eventually discharged into the eastern arm of Cambridge Bay, in the same general area as the planned seawater intake for the CHARS aquaria. A fairly...

Chironomid-environment relations in northern North America

Andrew Medeiros, Konrad Gajewski, Erin Barley, Marie-Claude Fortin, Isabelle Larocque-Tobler, David Porinchu & Sue Wilson
Chironomid assemblages from the uppermost sediments of 435 lakes spanning northern North America were compared to environmental parameters using direct gradient analysis. This large calibration set was merged from several previously developed regional datasets, and increases the number of modern analogues that are available for use for paleoenvironmental interpretations in this region. Air temperature explained the largest amount of variation in the chironomid assemblages with several other environmental factors accounting for statistical significant amounts of...

Killer whale (Orcinus orca) photo identification database, 2013-2015

Jim Roth, Steve Ferguson & Cory Matthews
Killer whales are located by boat, usually after sightings reports are received from local hunters who tell us where to look for them. During all killer whale encounters, we photograph individual whales using digital SLR cameras. Images were collected using three Canon camera bodies (two EOS-ID Mark IV Digital 16.7 megapixel, and one EOS-IDX 18.0 megapixel) fixed with any of four Canon lenses (70-200 mm, 16-35 mm, 24-70 mm, or a 400 mm fixed lens)....

CASES 0202-Beaufort Sea CTD data

Yves Gratton, Pascal Guillot, Annie Simard, Marie Robert & Marie-Emmanuelle Rail
The CTD data was obtained during LEG 00 of the 2002 CASES scientific cruise #0202. This Leg was carried out from September 20th 2002 to October 17th 2002 aboard the CCGS Pierre Radisson. There were 138 CTD casts in Leg 0. One hundred and thirty-six casts, associated to 107 oceanographic stations, are located in the Beaufort Sea research area. The following parameters were measured: temperature, conductivity and pressure (with a Sea-Bird 911 probe), oxygen (Sea-Bird...

CASES 0305-Franklin Bay CTD data

Yves Gratton, Pascal Guillot, Annie Simard & Marie-Emmanuelle Rail
The CTD data was obtained during LEG 03 of the 2003 CASES scientific cruise #0305. This Leg was carried out from November 26th 2003 to January 6th 2004 aboard the CCGS Amundsen. There were 61 CTD casts in Leg 3. All of these casts, associated to the overwintering oceanographic station, are located in Beaufort Sea research area. The following parameters were measured: temperature, conductivity and pressure (with a Sea-Bird 911 probe), oxygen (Sea-Bird 43), pH...

Registration Year

  • 2016
  • 2017
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  • 2019

Resource Types

  • Dataset