© OpenStreetMap contributors
- Add External Layer
- Upload Shapefile
- Close
Use the checkbox () to show or hide a layer.
Use the radio buttons () to select a layer to use with the identify function.
- Layers
- Opacity
Available layers
Search for marine data across UK organisations
- How-To
- About
- Contact MEDIN
- Share
Metadata: World Ocean Isopycnal-Level Velocity Inverted from GDEM with the P-Vector Method
Abstract:
The World Ocean Isopycnal-Level Velocity (WOIL-V) climatology was derived from the United States Navy's Generalised Digital Environmental Model (GDEM) temperature and salinity profiles, using the P-Vector Method. The absolute velocity data have the same horizontal resolution and temporal variation (annual, monthly) as GDEM (T, S) fields. These data have an horizontal resolution of 0.5 degrees ×0.5 degrees, and 222 isopycnal-levels (sigma theta levels) from sigma theta = 22.200 to 27.725 (kg m-3) with the increment delta sigma theta = 0.025 (kg m-3), however in the equatorial zone (5 degrees S – 5 degrees N) they are questionable due to the geostrophic balance being the theoretical base for the P-vector inverse method. The GDEM model, which served as the base for the calculations includes data from 1920s onwards and the WOIL-V will be updated with the same frequency as the GDEM. The climatological velocity field on isopycnal surface is dynamically compatible to the GDEM (T, S) fields and provides background ocean currents for oceanographic and climatic studies, especially in ocean isopycnal modeling. The climatology was prepared by the Department of Oceanography, Naval Postgraduate School.
Data holder:
British Oceanographic Data Centre
Click on the red button for resource contact details:
- Click on the red button for resource contact details
Use constraints:
Data are freely available
Other details | ||
Internal code | Internally assigned metadata identifier | 1647 |
Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | World Ocean Isopycnal-Level Velocity Inverted from GDEM with the P-Vector Method |
Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | British Oceanographic Data Centre record 1048ISOPYCNAL_GDEM_PVECTOR |
File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | 5996554af6f65af79cf9dae0e871b6a8 |
Resource Identifier | This is the code assigned by the data owner. | EDMED6274 |
Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 1900-01-01 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2018-09-13 |
Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | inapplicable |
Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | asNeeded |
Abstract | The abstract provides a clear and brief statement of the content of the resource. | The World Ocean Isopycnal-Level Velocity (WOIL-V) climatology was derived from the United States Navy's Generalised Digital Environmental Model (GDEM) temperature and salinity profiles, using the P-Vector Method. The absolute velocity data have the same horizontal resolution and temporal variation (annual, monthly) as GDEM (T, S) fields. These data have an horizontal resolution of 0.5 degrees ×0.5 degrees, and 222 isopycnal-levels (sigma theta levels) from sigma theta = 22.200 to 27.725 (kg m-3) with the increment delta sigma theta = 0.025 (kg m-3), however in the equatorial zone (5 degrees S – 5 degrees N) they are questionable due to the geostrophic balance being the theoretical base for the P-vector inverse method. The GDEM model, which served as the base for the calculations includes data from 1920s onwards and the WOIL-V will be updated with the same frequency as the GDEM. The climatological velocity field on isopycnal surface is dynamically compatible to the GDEM (T, S) fields and provides background ocean currents for oceanographic and climatic studies, especially in ocean isopycnal modeling. The climatology was prepared by the Department of Oceanography, Naval Postgraduate School. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | This dataset was created by the organisations with the "originator" role in this metadata record following their in-house procedures and model. The data were then provided to the British Oceanographic Data Centre (BODC) for archival and discoverability. This record will include any updates to the data as and when they occur. The originator supplies both documentation and software through the link in this metadata record. No data quality or data processing procedures were applied by BODC. |
Related keywords | ||
Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Natural Environment Research Council Designated Data Centres |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | unknown | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Vertical velocity of the water column (currents) | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Density of the water column | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Horizontal velocity of the water column (currents) | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Oceanographic geographical features | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 90 |
East | The eastern-most limit of the data resource in decimal degrees | 180 |
South | The southern-most limit of the data resource in decimal degrees | -90 |
West | The western-most limit of the data resource in decimal degrees | -180 |
Responsible organisations | ||
Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
Organisation name | British Oceanographic Data Centre | |
Individual name | Polly Hadžiabdic | |
Position name | Head of the BODC Requests Team | |
Delivery point | Joseph Proudman Building, 6 Brownlow Street | |
Postal code | L3 5DA | |
City | Liverpool | |
Administrative area | Merseyside | |
Country | United Kingdom | |
URL | http://www.bodc.ac.uk/ | |
Role | The distributor is the person or organisation that distributes the resource. | distributor |
Organisation name | British Oceanographic Data Centre | |
Position name | Director | |
Delivery point | Joseph Proudman Building, 6 Brownlow Street | |
Postal code | L3 5DA | |
City | Liverpool | |
Administrative area | Merseyside | |
Country | United Kingdom | |
URL | http://www.bodc.ac.uk/ | |
Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
Organisation name | Naval Postgraduate School, Department of Oceanography | |
Individual name | Unknown | |
Position name | Unknown | |
Phone | +1 (831) 656-2552, 656-2553 | |
Fax | +1 (831) 656-2712 | |
Delivery point | 833 Dyer Road | |
Postal code | 93943 | |
City | Monterey | |
Administrative area | CA | |
Country | United States | |
URL | http://www.oc.nps.navy.mil/ | |
Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
Organisation name | British Oceanographic Data Centre | |
Position name | Director | |
Delivery point | Joseph Proudman Building, 6 Brownlow Street | |
Postal code | L3 5DA | |
City | Liverpool | |
Administrative area | Merseyside | |
Country | United Kingdom | |
URL | http://www.bodc.ac.uk/ | |
Dataset constraints | ||
20 Limitations on Public Access - Access constraints | otherRestrictions | |
20 Limitations on Public Access - Other constraints | This states any limitations on access to the data and uses free text. | Data are freely available |
21 Conditions for Access and Use - Use limitation | This states any constraints on use of the data. Multiple conditions can be recorded for different parts of the data resource. If no conditions apply, then `No condtions apply` is recorded. This uses free text. | No conditions apply |
Version info | ||
Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2017-10-03 |
Date of last revision | The most recent date that the resource was revised. | 2018-07-09 |
Date of creation | The date that the resource was created. | 2018-07-09 |
Harvest date | The date which this record has been (re)harvested from the provider. | 2024-04-21 |
Metadata date | The date when the content of this metadata record was last updated. | 2018-09-13 |
Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery Metadata Standard |
Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | Version 2.3.8 |