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Eastern James Bay Moorings and CTDs 2018-2021
Centre for Earth Observation Science
Centre for Earth Observation Science — 2022-06-09 This data set contains CTDs, and mooring data (salinity, temperature and in some cases PAR and pressure) at a number of depths and locations around La Grande River from 2018-2021. Sensors collected data over the spring melt season, summer seasons and year-long to monitor the extent of the fresh water plume about La Grande River in both ice free and ice present conditions. Mooring data was collected continuously for 4-month and year long periods at 10 or 15 minute intervals at discrete locations and multiple depths.
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Fish larvae in Hudson Bay
Centre for Earth Observation Science
Centre for Earth Observation Science — 2022-12-12 Fish larvae collected via horizontal tows in the Hudson Bay system on the CCGS Amundsen in 2005, 2010, 2012, 2017 and 2018.
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Shoreline Habitat Inventory Mapping Imagery
Lake Winnipeg Foundation
Lake Winnipeg Foundation — 2022-03-03 Shoreline Habitat Inventory Mapping (SHIM) Imagery is a collection of images depicting land use, level of impact, major shore type, major shore type modifiers, predominant vegetation and segments in the Lake Winnipeg Basin.
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Belcher Islands Moorings and CTDs 2019-2022
Centre for Earth Observation Science
Centre for Earth Observation Science — 2022-11-03 This dataset contains CTDs (salinity, temperature, pressure) and mooring data (salinity, temperature, pressure, TDS) at a number of depths and areas around the Belcher Islands from 2019-2022. Moorings were ice tethered and collected data continuously throughout the spring until ice break up in May. Moorings used a sampling interval of 15 minutes.
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Chlorophyll-a concentration in ice and water - Hudson Bay 2018
Centre for Earth Observation Science
Centre for Earth Observation Science — 2022-03-11 These datasets include measurements of chlorophyll-a concentration of: - Bottom-ice communities and Melosira arctica - Phytoplankton and melt pond communities Data was collected in Hudson Bay during the BaySys cruise in June/ July 2018. Pigment concentrations were determined with the fluorometry method.
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2009 Environment Canada - WQMS Shoreline Survey Zooplankton Data
Environment and Climate Change Canada
Environment and Climate Change Canada — 2022-03-29 Zooplankton data gathered from the Shoreline Survey. Samples are from Hecla Island, Gimli, Manigotagan, South Beach Ridge, Grand Beach, Upper Devil's Lake, Lower Devil's Lake, Passwa Lake and Netley Lake.
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Lake Winnipeg Satellite and Chl-a Derived Images
C-Core
C-Core — 2022-06-01 MODIS is an optical sensor on board NASA’s polar orbit satellites terra and aqua, which provides daily global coverage. These Chlorophyll-a products are derived from MODIS imagery. Chlorophyll-a is calculated from the Fluorescence Line Height (FLH) using an algorithm developed by Greg McCullough from the University of Manitoba. FLH is calculated using the Surface Reflectance from these MODIS bands. The files in the Zip file are Chloropyll-a products over Lake Winnipeg for the 2013 season in Geotiff format.The Geotiff files are in UTM 14 datum=WGS84 projection. The file naming conversion is 4_YYYY-MM_DD_mmss_Winnipeg_new_dos.tif, where YYYY-MM_DD_mmss is the MODIS acquistion date/time. For the Water Quality Service applications, click [here](http://www.ccore.ca/waterquality/).
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Open Water Days in Hudson Bay
Centre for Earth Observation Science
Centre for Earth Observation Science — 2022-03-11 The dataset lists the length of the open water period (in days, ice concentration below 15%), the day of ice break-up and the day of freeze-up for the sampling stations of the BaySys cruise in Hudson Bay in June/July 2018. The data was extracted from passive microwave data.
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Optical measurements of sea ice - Hudson Bay 2018
Centre for Earth Observation Science
Centre for Earth Observation Science — 2022-03-15 The dataset includes optical measurements and sea ice surface measurements performed on mobile ice floes during the BaySys cruise in Hudson Bay in June/ July 2018.
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Photosynthesis-irradiance in ice and water - Hudson Bay 2018
Centre for Earth Observation Science
Centre for Earth Observation Science — 2022-03-09 These datasets describe photosynthesis-irradiance relationships that were used for: 1. Primary production of bottom-ice communities and Melosira arctica 2. Estimation of primary production of phytoplankton and melt pond communities Data was collected during the BaySys cruise in Hudson Bay in June/ July 2018.
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Sea ice cover progression in Hudson Bay 2008-2018
Centre for Earth Observation Science
Centre for Earth Observation Science — 2022-03-15 The dataset lists the first day of surface air temperatures above zero degC, the sea ice break-up date (ice concentration falling below 15%), the sea ice freeze-up date (ice concentration above 15%), the length of the open water period (number of days between ice concentration falling below 15%), and the number of melt days (defined as time period of surface air temperatures (SAT) above 0C and ice concentrations above 15%) for the entire Hudson Bay region between 2008 – 201
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SHIM Wildlife Vegetation Survey
Lake Winnipeg Foundation
Lake Winnipeg Foundation — 2022-03-02 Two different surveying strategies provided insight into the wildlife and vegetation communities within the south basin of Lake Winnipeg. Incidental wildlife observations were conducted along the entire shoreline between Riverton and Traverse Bay from July 30 to August 4, 2011. Surveys were conducted from a boat operated approximately 30-metres offshore. All wildlife observed between the boat and the shoreline (littoral zone), or within a 30-metre buffer upslope of the high water mark (riparian zone), are included in the data. These sightings provided valuable insight into habitat use and preference of avian communities within the south basin. A second round of more intensive wildlife and vegetation sampling occurred in the south basin between August 4 and 7, 2011. Wildlife and vegetation surveys were conducted both off and on-shore at 23 locations in the south basin (shown on map).
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LWRC 2019 Seabird Rosette DATA
Lake Winnipeg Research Consortium Inc.
Lake Winnipeg Research Consortium Inc. — 2021-12-16 Data collected in 2019 during the spring, summer and fall cruises aboard the M/V NAMAO. Data collected using a shipboard Seabird water quality profiler and four channel profiling sonde (“Seabird rosette”). Includes depth-averaged profiles in 0.5 m increments. Dataset also includes mapped profiles of Seabird parameters measured at respective sampling stations as well as Matlab scripts that produced the profiles (CSVs).
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LWRC Field Logs
Lake Winnipeg Research Consortium Inc.
Lake Winnipeg Research Consortium Inc. — 2022-04-07 Station and meteorological data recorded during the spring, summer, and fall surveys aboard the M/V NAMAO. Includes date, station ID, coordinates, time on/off station, depth, temperature (air and water), wind (speed and direction), barometric pressure, samples collected and pelagic trawl details.
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Northern Hemisphere Extratropical Cyclone Tracks from ERA-5
Centre for Earth Observation Science
Centre for Earth Observation Science — 2021-11-09 This dataset comprises a series of CSV files, each of which catalogues a suite of information for an individual cyclone track for the Northern Hemisphere. Detection and tracking are conducted using version 13.2 of the Lagrangian cyclone detection and tracking algorithm described by Crawford et al. (2021). This algorithm is applied to sea-level pressure data from Version 5 of the European Centre for Medium-Range Weather Forecasts (ECMWF) Retrospective Analysis (ERA-5) at a 3-hour temporal resolution and 25-km spatial resolution for the period 1950 – present (updated annually). Each CSV file contains information regarding the location, propagation, intensity, and size of the storm for each observation time. Whether a storm is a multi-center cyclone or interacting (splitting or merging) with other storm systems is also noted. Only cyclones that last at least 24 hours and travel at least 1000 km are included. These standard criteria are necessary to remove spurious systems (i.e., reduce the false positive rate).
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BaySys Remote Sensing Data
Centre for Earth Observation Science
Centre for Earth Observation Science — 2021-11-04 This data set encompasses all of the remote sensing data collected in relation to sea ice during the BaySys 2018 expedition (radiometric and UAV data).
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Rosette CTD
Centre for Earth Observation Science
Centre for Earth Observation Science — 2022-02-25 Hydrographic profiles using conductivity, temperature and depth (CTD) sondes were obtained across straits and along channels to best cover water column structure around the island. Two separate, but identical pumped Seabird 19plus CTDs with Biospherical scalar photosynthetically active radiation (PAR) and Seabird ECOtriplet fluorometer sensors, were used to collect hydrographic profiles, one standalone (autonomous) CTD and one mounted on the ship’s rosette. It is noted that the ship’s rosette also had a Seabird dissolved oxygen sensor. There were more than 200 profiles collected in total with very good coverage around the island. Rosette data was collected using a Seabird 32 pylon, 19Plus V2, and 33 deck unit. Rosettes are water sampling instruments used in conjunction with oceanographic sensors to measure a number of variables. Rosettes give us a detailed snapshot of the entire water column through these sensors and through water samples collected at various depths within the column. Raw data and configuration files can be provided upon request by Janine Hunt (Data Curator).
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Sea-ice edge phytoplankton bloom
Centre for Earth Observation Science
Centre for Earth Observation Science — 2021-11-05 Satellite-derived sea-ice retreat timing (tR) and maximum chlorophyll-a concentration in the ice edge zone between 1998 and 2018. Sea ice concentration (SIC) was obtained from the National Snow and Ice Data Center. It is based on daily passive microwave radiometry processed using the Bootstrap algorithm (Comiso, 2000) at 25 km resolution. The Bootstrap technique clusters the multichannel passive microwave sensors: Scanning Multi- channel Microwave Radiometer on the Nimbus-7 satellite, Special Sensor Microwave/Imager and Special Sensor Microwave Imager/Sounder from the Defense Meteorological Satellite Program’s satellites, and the Advanced Microwave Scanning Radiometer (Comiso et al., 1997). SIC was interpolated onto the same Chla grid using the nearest neighborhood scheme implemented in Matlab. Multi-sensor merged clorophyll-a concentration (Chla) Level-3 (i.e., binned and mapped) 8-day composites from the Globcolour Project (http://www.globcolour.info/) were used as a proxy for phytoplankton biomass. Globcolour products have a spa- tial resolution of 4.63 km and cover the 1998–2018 period. The merged product was selected to improve the spatial-temporal coverage diminishing gaps due to cloud cover and sea-ice coverage (Maritorena et al., 2010). The binning methodology combines the normalized water- leaving radiances from different ocean color sensors whenever they are available, which includes SeaWiFS (1998–2010), MODIS-Aqua (2002–2018), Medium- Resolution Imaging Spectrometer (MERIS: 2002–2011), and Visible Infrared Imaging Radiometer Suite (VIIRS: 2012–2018). [Chla] was estimated from normalized water-leaving radiances merged using the Garver-Siegel- Maritorena (GSM) semi-analytical model (Garver and Siegel, 1997; Maritorena et al., 2002). To assess the impacts of sea-ice retreat timing on marginal ice zone phytoplankton blooms (also refers to phytoplankton spring blooms or ice-edge blooms), we analyzed both Chla and SIC variability in parallel. The method is similar to that of Perrette et al. (2011), which was also adopted by Lowry et al. (2014) and Renaut et al. (2018). The sea-ice retreat, tR, is defined as the day at which SIC is below 10% for at least 24 days. This time interval is longer than the 20 days applied by Perrette et al. (2011) and Renaut et al. (2018) and the 14 days by Lowry et al. (2014) because we used 8-day composites instead of daily maps. However, to avoid sub-pixel contamination in ice-infested regions near the ice edge (Be´langer et al., 2013), we opted to be more conservative by applying a 10% threshold on SIC, as did Perrette et al. (2011) and Renaut et al. (2018) instead of 50% as applied by Lowry et al. (2014). The maximum Chla observed in the ice edge zone was extracted for each pixel for each year, yielding one map of MIZ Chla per year.
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Bottom ice and phytoplankton taxonomy - Hudson Bay 2018
Centre for Earth Observation Science
Centre for Earth Observation Science — 2022-03-15 These datasets includes species composition of: - bottom-ice communities - phytoplankton communities collected in Hudson Bay during the BaySys cruise in June/ July 2018.

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(Source Repository: Canadian Watershed Information Network (CanWIN))

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