Modelling the sea ice-ocean seasonal cycle in Hudson Bay, Foxe Basin and Hudson Strait, Canada

Saucier, François J.; Senneville, Simon; Prinsenberg, Simon; Roy, François; Smith, G. C. Moore; Gachon, Philippe; Caya, Daniel; Laprise, René

doi:10.1007/s00382-004-0445-6

Cited by 179 publications

(217 citation statements)

References 42 publications

Supporting

Mentioning

203

Contrasting

Unclassified

Order By: Relevance

“…Such a large pressure deviation can hardly be related to changes in sea surface density (r s ). From observations at 25 m depth, and the model by Saucier et al [2004b], monthly averaged densities change by at most 2 kg m À3 over a year. For a tidal elevation with fixed amplitude h = 1 m, the resulting surface wave pressure change is jD(r s gh)j = 2 Â 10 À3 dbars, an order of magnitude smaller than the observed r s gh deviation.…”

Section: Observationsmentioning

confidence: 99%

“…[13] The results from a numerical model [Saucier et al, 2004b] are used to further investigate the M 2 variations. The model solves the 3 -D hydrostatic primitive equations over the whole HBS domain (Foxe Basin, Hudson Bay/Strait, James and Ungava Bays, see Figure 1).…”

Section: Numerical Simulationsmentioning

confidence: 99%

“…These forcing, initial salinity and temperature, momentum and scalar diffusion, and comparison with observations are discussed in Saucier et al [2004b]. Tides are introduced by prescribing the sea elevation at open boundaries according to nine tidal constituents: M 2 , S 2 , N 2 , K 2 , O 1 , K 1 , P 1 , M 4 , and MS 4 .…”

Section: Numerical Simulationsmentioning

confidence: 99%

See 2 more Smart Citations

On the modification of tides in a seasonally ice‐covered sea

2008

Self Cite

View full text Add to dashboard Cite

[1] New observations from eight moorings located in Foxe Basin, Hudson Strait, and Hudson Bay are used to study the seasonal variability of the M 2 tide. Significant seasonal variations of the M 2 surface elevation are found in all these regions and at all seasons. The largest variations occur during winter while both elevation increase (Hudson Strait) and decrease (Hudson Bay, Foxe Basin) are observed. These variations are found recurrent at the stations where multiyear observations are available. Observations from a velocity profiler are consistent with a seasonal damping of the tides because of friction under ice. Numerical simulations with a sea ice-ocean coupled model and realistic forcing qualitatively reproduce most of the features of the observed variability. The simulations show that the winter M 2 variations are essentially caused by the under-ice friction, albeit with strong regional differences. Under-ice friction mostly occurs in a limited region (Foxe Basin) and can account for both increased and decreased M 2 elevations during winter.

show abstract

Section: Observationsmentioning

confidence: 99%

Section: Numerical Simulationsmentioning

confidence: 99%

See 1 more Smart Citation

On the modification of tides in a seasonally ice‐covered sea

2008

Self Cite

View full text Add to dashboard Cite

show abstract

“…Realistic simulations of oceanic conditions in the GSL with numerical models were made possible following studies from Saucier et al (2003Saucier et al ( , 2004Saucier et al ( , 2009) and other references therein. A complete seasonal cycle of the GSL was simulated in Saucier et al (2003), reproducing main circulation features driven by high-frequency boundary forcing, including hourly atmospheric conditions, daily river runoffs, and tidal predictions at the scale of minutes.…”

Section: Ice-ocean Model Descriptionmentioning

confidence: 99%

“…A complete seasonal cycle of the GSL was simulated in Saucier et al (2003), reproducing main circulation features driven by high-frequency boundary forcing, including hourly atmospheric conditions, daily river runoffs, and tidal predictions at the scale of minutes. Modelling developments presented later in Saucier et al (2004Saucier et al ( , 2009) allowed, with the same type of forcing and without data assimilation, to produce multi-year simulations of the GSL capturing interannual variations. This demonstration of hindcasting skill for the GSL (Saucier et al, 2003(Saucier et al, , 2009) and Hudson Bay laid the foundation to extend and improve regional climate and meteorological forecast models covering coastal regions of eastern Canada.…”

Section: Ice-ocean Model Descriptionmentioning

confidence: 99%

Evaluation of an operational ice–ocean analysis and forecasting system for the Gulf of St Lawrence

Smith

Roy

Brasnett

2012

Quart J Royal Meteoro Soc

View full text Add to dashboard Cite

Our ability to simulate and understand oceanic conditions of the Gulf of St Lawrence (GSL) has significantly increased in the last decade with the development of regional ocean models combining scientific knowledge, oceanographic data, and computing techniques. This has created opportunities for their integration with meteorological forecast models where the importance of sea ice-ocean dynamics in air-sea exchanges was recently demonstrated. In order to produce accurate initial conditions for coupled weather forecasts, a GSL ice-ocean 'pseudo' analysis (IOPA) system has been developed and implemented operationally at the Canadian Meteorological Centre (CMC). Based on prognostic ice-ocean model solutions the IOPA system has sufficient skill to produce realistic daily fields without flux correction or data assimilation of temperature and salinity. Using only a simple assimilation method for sea-ice data, daily oceanic fields are obtained and can be used to initialize ice-ocean or coupled atmospheric forecasting systems.A 3-year retrospective evaluation of this operational method is presented focusing on sea-surface temperature (SST) and sea-ice conditions. Model estimates are compared with in situ and satellite-derived data. Results show that the IOPA system has an accuracy equivalent to or better than the current operational SST and ice analyses produced at the CMC. Together with preceding modelling efforts, this work lays the foundation for the first state-of-the-art GSL ocean analysis and forecast systems combining ocean modelling and real-time three-dimensional data assimilation. Coupled atmosphere-ice-ocean forecasts produced with the same ice-ocean model and initialized with the IOPA system are presented in a companion paper.

show abstract

Low calcium carbonate saturation state in an Arctic inland sea having large and varying fluvial inputs: The Hudson Bay system

et al. 2014

View full text Add to dashboard Cite

The Hudson Bay system (HBS) is a shallow inland sea in the Arctic, composed of Hudson Strait, Foxe Basin/Channel, James Bay, and Hudson Bay. Dissolved inorganic carbon (DIC) and total alkalinity (TA) measurements were used to investigate the state of ocean acidification, specifically calcium carbonate saturation states (X) and pH. The freshwater sources were identified from the relationship between oxygen isotope composition (d 18 O) and salinity to understand the role of freshwater in ocean acidification. The saturation state of seawater with respect to calcium carbonate (X) in surface water (<10 m) of the HBS was strongly influenced by river runoff. Aragonite under-saturation (X arg < 1) was observed in the surface water of the south-eastern Hudson Bay, where the river runoff fraction was high (>10%). The watershed characteristics, however, influenced the alkalinity of river runoff in different parts of Hudson Bay, which contributed to X variation in the coastal region. In southwestern Hudson Bay where the watershed is dominated by limestone, X was higher compared to eastern Hudson Bay, where the watershed consists of an igneous rock formation. In deeper waters, low X is caused by remineralization of organic matter. The highest DIC concentrations (>2300 mmol/kg) were observed in the depths of central Hudson Bay with a pH total of 7.49 and X arg of 0.37. Over 67% and 22% of the bottom water of Hudson Bay was undersaturated with respect to aragonite and calcite respectively, despite Hudson Bay being very shallow (less than 250 m deep). The aragonite saturation horizon in the central Hudson Bay was around 50 m.

show abstract

Modelling the sea ice-ocean seasonal cycle in Hudson Bay, Foxe Basin and Hudson Strait, Canada

Cited by 179 publications

References 42 publications

On the modification of tides in a seasonally ice‐covered sea

On the modification of tides in a seasonally ice‐covered sea

Evaluation of an operational ice–ocean analysis and forecasting system for the Gulf of St Lawrence

Low calcium carbonate saturation state in an Arctic inland sea having large and varying fluvial inputs: The Hudson Bay system

Contact Info

Product

Resources

About