A new high-resolution Coastal Ice-Ocean Prediction System for the East Coast of Canada
This paper describes the Coastal Ice Ocean Prediction System for the East Coast of Canada (CIOPS-E) running operationally at Environment and Climate Change Canada (ECCC). CIOPS-E uses a one-way downscaling technique on a 1/36° horizontal grid (~2 km) to simulate high-resolution ice and ocean conditi...
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ftcopernicus:oai:publications.copernicus.org:egusphere108905 2023-05-15T17:45:47+02:00 A new high-resolution Coastal Ice-Ocean Prediction System for the East Coast of Canada Paquin, Jean-Philippe Roy, François Smith, Gregory C. MacDermid, Sarah Lei, Ji Dupont, Frédéric Lu, Youyu Taylor, Stephanne St-Onge-Drouin, Simon Blanken, Hauke Dunphy, Michael Soontiens, Nancy 2023-01-26 application/pdf https://doi.org/10.5194/egusphere-2023-42 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-42/ eng eng doi:10.5194/egusphere-2023-42 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-42/ eISSN: Text 2023 ftcopernicus https://doi.org/10.5194/egusphere-2023-42 2023-01-30T17:22:42Z This paper describes the Coastal Ice Ocean Prediction System for the East Coast of Canada (CIOPS-E) running operationally at Environment and Climate Change Canada (ECCC). CIOPS-E uses a one-way downscaling technique on a 1/36° horizontal grid (~2 km) to simulate high-resolution ice and ocean conditions over the northwest Atlantic Ocean and the Gulf of St. Lawrence (GSL). CIOPS-E is forced at its lateral boundaries with ECCC’s Regional Ice-Ocean Prediction System (RIOPS) and tidal conditions from the Oregon State University TPXO model. The three-dimensional temperature and salinity fields are spectrally nudged towards the RIOPS solution offshore of the 1500 m isobath to, effectively constrain mesoscale features in the Gulf Stream area. Over the continental shelf and the GSL, the CIOPS-E solution is free to develop fully according to model dynamics. CIOPS-E is evaluated over one year from March 2019 to February 2020. Overall, the CIOPS-E improves the representation of tides compared to ECCC’s lower resolution systems: RIOPS (1/12°) and the Regional Marine Prediction System – Gulf of St. Lawrence (RMPS-GSL, 5 km). The accuracy of the tides are comparable to the TPXO at most coastal tide gauges. Sub-tidal water levels from CIOPS-E agree well with the observed seasonal variability and show improved errors statistics at all stations compared to RIOPS and RMPS-GSL. Improvements are especially noted for the GSL. Sea surface temperatures (SSTs) from CIOPS-E are lower (higher) in spring (fall) over most of the GSL compared to satellite-derived analyses and RIOPS. Comparison with in-situ observations of SST show significant improvement in CIOPS-E with respect to the RMPS-GSL. Lastly, sea ice conditions in the GSL are compared with the Canadian Ice Service (CIS) charts and the RMPS-GSL model. The sea ice cover and thickness from the pseudo-analysis component (without data assimilation) shows an overestimation compared to the CIS estimates, which is subsequently corrected in the forecast phase through the direct insertion of ... Text Northwest Atlantic Sea ice Copernicus Publications: E-Journals Canada |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
This paper describes the Coastal Ice Ocean Prediction System for the East Coast of Canada (CIOPS-E) running operationally at Environment and Climate Change Canada (ECCC). CIOPS-E uses a one-way downscaling technique on a 1/36° horizontal grid (~2 km) to simulate high-resolution ice and ocean conditions over the northwest Atlantic Ocean and the Gulf of St. Lawrence (GSL). CIOPS-E is forced at its lateral boundaries with ECCC’s Regional Ice-Ocean Prediction System (RIOPS) and tidal conditions from the Oregon State University TPXO model. The three-dimensional temperature and salinity fields are spectrally nudged towards the RIOPS solution offshore of the 1500 m isobath to, effectively constrain mesoscale features in the Gulf Stream area. Over the continental shelf and the GSL, the CIOPS-E solution is free to develop fully according to model dynamics. CIOPS-E is evaluated over one year from March 2019 to February 2020. Overall, the CIOPS-E improves the representation of tides compared to ECCC’s lower resolution systems: RIOPS (1/12°) and the Regional Marine Prediction System – Gulf of St. Lawrence (RMPS-GSL, 5 km). The accuracy of the tides are comparable to the TPXO at most coastal tide gauges. Sub-tidal water levels from CIOPS-E agree well with the observed seasonal variability and show improved errors statistics at all stations compared to RIOPS and RMPS-GSL. Improvements are especially noted for the GSL. Sea surface temperatures (SSTs) from CIOPS-E are lower (higher) in spring (fall) over most of the GSL compared to satellite-derived analyses and RIOPS. Comparison with in-situ observations of SST show significant improvement in CIOPS-E with respect to the RMPS-GSL. Lastly, sea ice conditions in the GSL are compared with the Canadian Ice Service (CIS) charts and the RMPS-GSL model. The sea ice cover and thickness from the pseudo-analysis component (without data assimilation) shows an overestimation compared to the CIS estimates, which is subsequently corrected in the forecast phase through the direct insertion of ... |
format |
Text |
author |
Paquin, Jean-Philippe Roy, François Smith, Gregory C. MacDermid, Sarah Lei, Ji Dupont, Frédéric Lu, Youyu Taylor, Stephanne St-Onge-Drouin, Simon Blanken, Hauke Dunphy, Michael Soontiens, Nancy |
spellingShingle |
Paquin, Jean-Philippe Roy, François Smith, Gregory C. MacDermid, Sarah Lei, Ji Dupont, Frédéric Lu, Youyu Taylor, Stephanne St-Onge-Drouin, Simon Blanken, Hauke Dunphy, Michael Soontiens, Nancy A new high-resolution Coastal Ice-Ocean Prediction System for the East Coast of Canada |
author_facet |
Paquin, Jean-Philippe Roy, François Smith, Gregory C. MacDermid, Sarah Lei, Ji Dupont, Frédéric Lu, Youyu Taylor, Stephanne St-Onge-Drouin, Simon Blanken, Hauke Dunphy, Michael Soontiens, Nancy |
author_sort |
Paquin, Jean-Philippe |
title |
A new high-resolution Coastal Ice-Ocean Prediction System for the East Coast of Canada |
title_short |
A new high-resolution Coastal Ice-Ocean Prediction System for the East Coast of Canada |
title_full |
A new high-resolution Coastal Ice-Ocean Prediction System for the East Coast of Canada |
title_fullStr |
A new high-resolution Coastal Ice-Ocean Prediction System for the East Coast of Canada |
title_full_unstemmed |
A new high-resolution Coastal Ice-Ocean Prediction System for the East Coast of Canada |
title_sort |
new high-resolution coastal ice-ocean prediction system for the east coast of canada |
publishDate |
2023 |
url |
https://doi.org/10.5194/egusphere-2023-42 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-42/ |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Northwest Atlantic Sea ice |
genre_facet |
Northwest Atlantic Sea ice |
op_source |
eISSN: |
op_relation |
doi:10.5194/egusphere-2023-42 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-42/ |
op_doi |
https://doi.org/10.5194/egusphere-2023-42 |
_version_ |
1766149029544067072 |