Dataset
NCEO LTSS: Global Ocean Lagrangian Trajectories, v1.0, 1998-2018 (OLTraj)
Abstract
The National Centre for Earth Observation (NCEO) Long Term Science Single Centre (LTSS) Global Ocean Lagrangian Trajectories (OLTraj) provides 30-day forward and backward Lagrangian trajectories based on surface velocities from an ocean reanalysis. Each trajectory represents the path that a water mass would move along starting at a given pixel and a given day. OLTraj can be thus used to implement analyses of oceanic data in a Lagrangian framework. The purpose of OLTraj is to allow non-specialists to conduct Lagrangian analyses of surface ocean data.
The dataset has global coverage and spans 1998-2018 with a daily temporal resolution. The trajectories were generated starting from zonal and meridional model velocity fields that were integrated using the LAMTA package (6-hour time step) as described in Nencioli et al., 2018. Please see the documentation section below for further information.
Details
| Previous Info: |
2025-12-09 This dataset is temporarily unavailable for download from the CEDA archive. We are working on restoring access. Please see our … Show More 2025-12-09 This dataset is temporarily unavailable for download from the CEDA archive. We are working on restoring access. Please see our latest news items for updates. - if you require access to this data in the meantime then please contact the CEDA helpdesk. Show Less |
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence(s): http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
Data were produced by the project team and supplied for archiving at the Centre for Environmental Data Analysis (CEDA). |
| File Format: |
NetCDF V4.0
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Related Documents
| Nencioli et al., 2018 |
| Global Ocean Physics Reanalysis |
Citations: 3
The following citations have been automatically harvested from external sources associated with this resource where DOI tracking is possible. As such some citations may be missing from this list whilst others may not be accurate. Please contact the helpdesk to raise any issues to help refine these citation trackings.
| Dall’Olmo, G. & Nencioli, F. (2021) Global Ocean Lagrangian Trajectories based on AVISO velocities, v2.0, 1998-2018. https://doi.org/10.5285/FE3CB5120FA74FA7974820C2E2A238A7 https://doi.org/10.5285/fe3cb5120fa74fa7974820c2e2a238a7 |
| Dall’Olmo, G. & Nencioli, F. (2021) Global ocean lagrangian trajectories based on AVISO velocities, v2.2. https://doi.org/10.5285/5C2B70D069CB467AB73E80B84C3E395A https://doi.org/10.5285/5c2b70d069cb467ab73e80b84c3e395a |
| Nencioli, F. & Dall’Olmo, G. (2021) Code to generate OLTraj product. Zenodo. https://doi.org/10.5281/ZENODO.5082982 https://doi.org/10.5281/zenodo.5082982 |
Process overview
| Title | NCEO OLTraj V1.0 |
| Abstract | The trajectories were generated starting from zonal and meridional model velocity fields; please see Global Ocean Physics Reanalysis reference in the documentation section for more details on the model used. The output of which was integrated using the LAMTA package (6-hour time step) as previously described in Nencioli et al., 2018 (also available in the documentation section). |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
- var_id: lat
- var_id: lon
- var_id: time
- var_id: trajlat
- var_id: trajlon
Co-ordinate Variables
Temporal Range
1998-01-01T00:00:00
2018-11-25T00:00:00
Geographic Extent
90.0000° |
||
-180.0000° |
180.0000° |
|
-90.0000° |