The Pentland Firth and Orkney Waters Model

131034453The Pentland Firth and Orkney Waters Modelupdate email address.100016090generic_information_pageund1537445767164639541400164639541458The Pentland Firth and Orkney Waters (PFOW) is an important region for marine renewable energy, and features prominently in the <a href="https://www.gov.scot/publications/scotlands-national-marine-plan/">National Marine Plan</a>. For example, this region significantly contributes to the total Scottish tidal stream resource. The PFOW model is an implementation of the Finite Volume Community Ocean Model (FVCOM) and has a domain covering the northern Isles of Orkney and Shetland and Moray Firth, extending from approximately 0° - 5° W and 57° - 61° N. The model grid is unstructured with the highest horizontal resolution in the Pentland Firth where the typical node spacing is 100 – 150 m. Away from Orkney the model has a comparably low horizontal resolution. The vertical water column is resolved using 10 terrain-following sigma layers, each representing 10% of the water column. The main output from the model to date is a one year long Climatology representing typical present day conditions (1990-2014). For this climatology, the model was forced by the wider Scottish Shelf Model (SSM) climatology at the open boundary. Effectively, the PFOW is nested within the wider SSM. Climatological atmospheric forcing and fresh water input were also applied to the model. The wider SSM has a 1993 tidal component included, which was then applied to the PFOW climatology. The latest version of the climatology is PFOW 1.02. A number of other model runs have been performed, for specific time periods, and these are listed in the table below. filtered_htmlThe Pentland Firth and Orkney Waters (PFOW) is an important region for marine renewable energy, and features prominently in the <a href="https://www.gov.scot/publications/scotlands-national-marine-plan/">National Marine Plan</a>. For example, this region significantly contributes to the total Scottish tidal stream resource. The PFOW model is an implementation of the Finite Volume Community Ocean Model (FVCOM) and has a domain covering the northern Isles of Orkney and Shetland and Moray Firth, extending from approximately 0° - 5° W and 57° - 61° N. The model grid is unstructured with the highest horizontal resolution in the Pentland Firth where the typical node spacing is 100 – 150 m. Away from Orkney the model has a comparably low horizontal resolution. The vertical water column is resolved using 10 terrain-following sigma layers, each representing 10% of the water column. The main output from the model to date is a one year long Climatology representing typical present day conditions (1990-2014). For this climatology, the model was forced by the wider Scottish Shelf Model (SSM) climatology at the open boundary. Effectively, the PFOW is nested within the wider SSM. Climatological atmospheric forcing and fresh water input were also applied to the model. The wider SSM has a 1993 tidal component included, which was then applied to the PFOW climatology. The latest version of the climatology is PFOW 1.02. A number of other model runs have been performed, for specific time periods, and these are listed in the table below. 34877453SSM PFOW model domainpublic://ssm_pfow_model_domain_transparent.pngimage/png43923711537524554imagePentland Firth and Orkney Waters model domainPentland Firth and Orkney Waters model domain(a) The Pentland Firth and Orkney Waters model domain and (b) the unstructured grid for the region around the Orkney Islands.(a) The Pentland Firth and Orkney Waters model domain and (b) the unstructured grid for the region around the Orkney Islands.<_drafty_revision_requested>FIELD_LOAD_CURRENT1(a) The Pentland Firth and Orkney Waters model domain and (b) the unstructured grid for the region around the Orkney Islands.Pentland Firth and Orkney Waters model domain24061575240615751964Model Runs and Versions The model versions/runs listed each have a different computational grid and/or use different forcing data. This is reflected in the version numbering convention where the first number indicates the grid version and the second indicates the model run and/or the forcing data used. Rows where the text is grey indicate that the model version has been surpassed with a later version, usually listed directly below. For example, PFOW 1.01 was replaced by PFOW 1.02. Model runs in italics indicate that the data are not currently available. <table align="left" border="1" cellpadding="1" cellspacing="1" summary="The main SSM model runs to date"> <thead> <tr> <th scope="col" style="width:13%">Version Number</th> <th scope="col" style="width:15%">Time Period</th> <th scope="col" style="width:15%">Description</th> <th scope="col" style="width:15%">Boundary Forcing</th> <th scope="col" style="width:15%">Atmospheric Forcing</th> <th scope="col" style="width:15%">Fresh Water Forcing</th> <th scope="col" style="width:15%">DOI</th> </tr> </thead> <tbody> <tr> <td>PFOW 1.01</td> <td>1 year climatology representing 1960 - 2004</td> <td>Original PFOW grid with climatological forcing</td> <td>The wider SSM climatology version 1.01</td> <td>Climatology derived from ECMWF ERA-40 and ERA-Interim (1960-2004)</td> <td>Grid2Grid climatology (1962-2011)</td> <td> </td> </tr> <tr> <td>PFOW 1.02</td> <td>1 year climatology representing 1990 - 2014</td> <td>Original PFOW grid with updated climatological forcing</td> <td>The wider SSM climatology version 2.01</td> <td>Climatology derived from ECMWF ERA-Interim (1990-2014)</td> <td>Grid2Grid climatology (1962-2011)</td> <td><a href="https://doi.org/10.7489/12041-1">10.7489/12041-1</a></td> </tr> <tr> <td>PFOW 1.03.1</td> <td>July 2013 - October 2014</td> <td>Model run for the period of time the BRAHAN HF radar system, covering the Fair Isle Gap, was operational</td> <td>Atlantic Margin Model (AMM7) 7 km resolution</td> <td>ECMWF ERA-Interim</td> <td>Grid2Grid climatology (1962-2011)</td> <td> </td> </tr> <tr> <td>PFOW 1.03.2</td> <td>July 2013 - October 2014</td> <td>Model run for the period of time the BRAHAN HF radar system, covering the Fair Isle Gap, was operational, with no fresh water forcing</td> <td>Atlantic Margin Model (AMM7) 7 km resolution</td> <td>ECMWF ERA-Interim</td> <td>None</td> <td> </td> </tr> <tr> <td>PFOW 1.03.3</td> <td>July 2013 - October 2014</td> <td>Model run for the period of time the BRAHAN HF radar system, covering the Fair Isle Gap, was operational, with no atmospheric forcing</td> <td>Atlantic Margin Model (AMM7) 7 km resolution</td> <td>None</td> <td>Grid2Grid climatology (1962-2011)</td> <td> </td> </tr> </tbody> </table> If you are interested in any of these models, or the model outputs, please contact the Marine Scotland Science Oceanography group (mss.oceanography@gov.scot). full_htmlModel Runs and Versions The model versions/runs listed each have a different computational grid and/or use different forcing data. This is reflected in the version numbering convention where the first number indicates the grid version and the second indicates the model run and/or the forcing data used. Rows where the text is grey indicate that the model version has been surpassed with a later version, usually listed directly below. For example, PFOW 1.01 was replaced by PFOW 1.02. Model runs in italics indicate that the data are not currently available. <table align="left" border="1" cellpadding="1" cellspacing="1" summary="The main SSM model runs to date"> <thead> <tr> <th scope="col" style="width:13%">Version Number</th> <th scope="col" style="width:15%">Time Period</th> <th scope="col" style="width:15%">Description</th> <th scope="col" style="width:15%">Boundary Forcing</th> <th scope="col" style="width:15%">Atmospheric Forcing</th> <th scope="col" style="width:15%">Fresh Water Forcing</th> <th scope="col" style="width:15%">DOI</th> </tr> </thead> <tbody> <tr> <td>PFOW 1.01</td> <td>1 year climatology representing 1960 - 2004</td> <td>Original PFOW grid with climatological forcing</td> <td>The wider SSM climatology version 1.01</td> <td>Climatology derived from ECMWF ERA-40 and ERA-Interim (1960-2004)</td> <td>Grid2Grid climatology (1962-2011)</td> <td> </td> </tr> <tr> <td>PFOW 1.02</td> <td>1 year climatology representing 1990 - 2014</td> <td>Original PFOW grid with updated climatological forcing</td> <td>The wider SSM climatology version 2.01</td> <td>Climatology derived from ECMWF ERA-Interim (1990-2014)</td> <td>Grid2Grid climatology (1962-2011)</td> <td><a href="https://doi.org/10.7489/12041-1">10.7489/12041-1</a></td> </tr> <tr> <td>PFOW 1.03.1</td> <td>July 2013 - October 2014</td> <td>Model run for the period of time the BRAHAN HF radar system, covering the Fair Isle Gap, was operational</td> <td>Atlantic Margin Model (AMM7) 7 km resolution</td> <td>ECMWF ERA-Interim</td> <td>Grid2Grid climatology (1962-2011)</td> <td> </td> </tr> <tr> <td>PFOW 1.03.2</td> <td>July 2013 - October 2014</td> <td>Model run for the period of time the BRAHAN HF radar system, covering the Fair Isle Gap, was operational, with no fresh water forcing</td> <td>Atlantic Margin Model (AMM7) 7 km resolution</td> <td>ECMWF ERA-Interim</td> <td>None</td> <td> </td> </tr> <tr> <td>PFOW 1.03.3</td> <td>July 2013 - October 2014</td> <td>Model run for the period of time the BRAHAN HF radar system, covering the Fair Isle Gap, was operational, with no atmospheric forcing</td> <td>Atlantic Margin Model (AMM7) 7 km resolution</td> <td>None</td> <td>Grid2Grid climatology (1962-2011)</td> <td> </td> </tr> </tbody> </table> If you are interested in any of these models, or the model outputs, please contact the Marine Scotland Science Oceanography group (<a href="mailto:mss.oceanography@gov.scot">mss.oceanography@gov.scot</a>). 1379916135sioc:Itemfoaf:Document<predicates is_array="true"><item>dc:title</item></predicates><type>property</type>dc:datedc:createdxsd:dateTimedate_iso8601dc:modifiedxsd:dateTimedate_iso8601content:encodedsioc:has_creatorrelfoaf:namesioc:num_repliesxsd:integersioc:last_activity_datexsd:dateTimedate_iso8601https://marine.gov.scot/?q=information/pentland-firth-and-orkney-waters-modelrorya:6:{s:16:"ckeditor_default";s:1:"t";s:20:"ckeditor_show_toggle";s:1:"t";s:14:"ckeditor_width";s:4:"100%";s:13:"ckeditor_lang";s:2:"en";s:18:"ckeditor_auto_lang";s:1:"t";s:7:"overlay";i:1;}12660713103416090needs_reviewpublished58164639541411The Pentland Firth and Orkney Waters Model164639541412660713103416090needs_reviewpublished58164639541411The Pentland Firth and Orkney Waters Model164639541412660713103416090needs_reviewpublished58164639541411The Pentland Firth and Orkney Waters Model1646395414