Iceberg severity off the east coast of North America in relation to upstream sea ice variability: An update

Marko, J.R.; Fissel, David B.; Álvarez, Mar Martínez de Saavedra; Ross, Ed; Kerr, Randy

doi:10.1109/oceans.2014.7003128

Cited by 3 publications

(6 citation statements)

References 8 publications

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“…The Baffin Current from the Baffin Bay brings cold water as well as drifting icebergs and ice islands into the Labrador Sea, acting as corridor for ice transport (Yang et al, 2016;New et al, 2021). Such moving ice blocs was reported by Marko et al (2014) as presenting risks for activities and operations conducted offshore Newfoundland. Cold waters from Hudson's 1.1.3 Canadian Arctic Archipelago (CAA)…”

Section: Labrador Sea and Hudson Straitmentioning

confidence: 97%

Oceanographic dataset collected during the 2021 scientific expedition of the Canadian Coast Guard Ship Amundsen

Ratsimbazafy¹,

Dezutter²,

Desmarais³

et al. 2023

Preprint

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Abstract. Since 2003, the state-of-the-art Canadian Coast Guard Ship (CCGS) research icebreaker Amundsen furrows the Canadian Arctic waters to support novel research endeavors and collect oceanographic data. This paper presents the data acquisition, the processing methods and an overview of the data collected during the 2021 expedition as the ship traveled over 30 000 km during 122 days across the Canadian Arctic Ocean, collecting sea surface, atmospheric and seabed underway measurements. A total of 266 casts of a conductivity, temperature and depth profiler mounted on a rosette (CTD-Rosette) were also conducted to monitor the main physical, chemical and biological parameters of the water column. More specifically, the data here presented were collected with the CTD-Rosette across historical sampling transects in Davis Strait, the NorthWater Polynya (NOW), and Cape Bathurst. A 182 km dedicated survey of Moving Vessel Profiler (MVP), equipped with CTD, transmissometer, dissolved oxygen, fluorescence, sound velocity sensors, was conducted across Hudson Strait. We also present an overview of the data collected by the underway systems (seabed, thermosalinograph and atmospheric). Such data are essential in understanding the impacts of climate warming on the unique environments of the Canadian Arctic Ocean. Amundsen Science supports and promotes easy access and sharing of such valuable data to the scientific community.

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Section: Labrador Sea and Hudson Straitmentioning

confidence: 97%

Oceanographic dataset collected during the 2021 scientific expedition of the Canadian Coast Guard Ship Amundsen

Ratsimbazafy¹,

Dezutter²,

Desmarais³

et al. 2023

Preprint

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“…The seasonal and interannual variability in the number of icebergs crossing 48°N is large and not well understood. Past studies (Marko et al, 1994(Marko et al, , 2014 point out that sea ice can be an important driver of this variability. Although the reasons behind I48N variability are not the focus of this study, we use these observations to evaluate our simulations, as was done previously for NEMO-ICB (Marson et al, 2018).…”

Section: Does the Sea Ice Locking Parameterization Affect The Simulat...mentioning

confidence: 99%

“…The authors showed that, when sea ice was present at concentrations higher than 20%, it dictated most of the fragments' drift. Moreover, Marko et al (1994Marko et al ( , 2014 associated sea ice cover in Baffin Bay to the seasonal and interannual variability in the number of icebergs reaching the Grand Banks. Keghouche et al (2010) also observed a correlation between sea ice extent and iceberg presence in the Barents Sea, and Yulmetov et al (2016) mentioned icebergs being "captured" by landfast ice in northeast Greenland.…”

Section: Introductionmentioning

confidence: 99%

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Sea Ice‐Driven Iceberg Drift in Baffin Bay

Marson,

Myers,

Garbo

et al. 2024

JGR Oceans

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Baffin Bay is the travel destination of most icebergs calving from west Greenland. They commonly follow the bay's cyclonic circulation and might end up far south along the coast of Newfoundland and Labrador, where many shipping routes converge. Given the hazard that icebergs pose to marine transportation, understanding their distribution is fundamental. One of the forces driving iceberg drift arises from the presence of sea ice. Observations in the Southern Ocean indicate that icebergs get locked in thick and concentrated sea ice. We present observations that support the occurrence of this sea ice locking mechanism (SIL) in Baffin Bay as well. Most iceberg models, however, represent the sea ice force over an iceberg as a simple drag force. Here, we implement a new parameterization in the iceberg module of the Nucleus for European Modeling of the Ocean (NEMO‐ICB) to represent SIL. We show that, by using this new parameterization, icebergs are more likely to travel outside of the Baffin Island Current during winter, which is supported by satellite observations. There is a slight improvement in the representation of iceberg severity along the coast of Newfoundland and Labrador and a slight shift of iceberg melt toward this region and Lancaster Sound/Hudson Strait. Although the impacts of icebergs on sea ice are still not represented, and targeted observations are needed for model calibration regarding sea ice concentration thresholds from which icebergs get locked, we are confident that this model improvement takes iceberg modeling one step forward toward reality.

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“…The Baffin Current from the Baffin Bay brings cold water as well as drifting icebergs and ice islands into the Labrador Sea, acting as a corridor for ice transport (Yang et al, 2016;New et al, 2021). Such moving ice blocks were reported by Marko et al (2014) as presenting risks for activities and operations conducted offshore Newfoundland. Cold waters from Hudson Bay's current circulates through Hudson Strait to the Labrador Sea where it joins warm subarctic water from the North Atlantic Current (McGeehan and Maslowski, 2012;Yang et al, 2016) and feeds the source of water mass formation in the Labrador and Irminger seas (Kieke and Yashayaev, 2015).…”

Section: Labrador Sea and Hudson Straitmentioning

confidence: 99%

Oceanographic dataset collected during the 2021 scientific expedition of the Canadian Coast Guard Ship Amundsen

Ratsimbazafy,

Dezutter,

Desmarais

et al. 2024

Earth Syst. Sci. Data

View full text Add to dashboard Cite

Abstract. Since 2003, the state-of-the-art Canadian Coast Guard Ship (CCGS) research icebreaker Amundsen has furrowed the Canadian Arctic waters to support novel research endeavors and collect oceanographic data. This paper presents the data acquisition, the processing methods and an overview of the data collected during the 2021 expedition as the ship traveled over 30 000 km during 122 d across the Canadian Arctic Ocean, collecting sea surface, atmospheric and seabed underway measurements. A total of 266 casts of a conductivity, temperature and depth profiler mounted on a Conductivity Temperature Depth rosette (CTD Rosette) were also conducted to monitor the main physical, chemical and biological parameters of the water column. More specifically, the data presented here were collected with the CTD Rosette across historical sampling transects in Davis Strait, the North Water Polynya (NOW) and Cape Bathurst. A 182 km dedicated survey using the Moving Vessel Profiler® (MVP), equipped with CTD, transmissometer, dissolved oxygen, fluorescence and sound velocity sensors, was conducted across Hudson Strait. We also present an overview of the data collected by the underway systems (seabed, thermosalinograph and atmospheric). Such data are essential in understanding the impacts of climate warming on the unique environments of the Canadian Arctic Ocean. Amundsen Science supports and promotes easy access and sharing of such valuable data to the scientific community.

show abstract

Iceberg severity off the east coast of North America in relation to upstream sea ice variability: An update

Cited by 3 publications

References 8 publications

Oceanographic dataset collected during the 2021 scientific expedition of the Canadian Coast Guard Ship Amundsen

Oceanographic dataset collected during the 2021 scientific expedition of the Canadian Coast Guard Ship Amundsen

Sea Ice‐Driven Iceberg Drift in Baffin Bay

Oceanographic dataset collected during the 2021 scientific expedition of the Canadian Coast Guard Ship Amundsen

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