NERC Data Catalogue Service
Global ocean lagrangian trajectories based on AVISO velocities, v2.2
The National Centre for Earth Observation (NCEO) Long Term Science Single Centre (LTSS) Global Ocean Lagrangian Trajectories (OLTraj) provide 30-day forward and backward Lagrangian trajectories based on AVISO (Satellite Altimetry Data project) surface velocities. 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 1998-2019 with a daily temporal resolution. The trajectories were generated starting from zonal and meridional model velocity fields that were integrated using the LAMTA (6-hour time step - part of ) as described in Nencioli et al., 2018 and SPASSO (Software package for and adaptive satellite-based sampling for ocean graphic cruises containing LAMTA) software user guide. Please see the documentation section below for further information.
Version 2.2 is a higher resolution version of V2.0 and also has double value for time variables to permit access via THREDDS
Simple
- Date (Publication)
- 2021-08-19T14:44:50
- Date (Creation)
- 2021-08-19T14:44:50
- Identifier
- NERC EDS Centre for Environmental Data Analysis / 5c2b70d069cb467ab73e80b84c3e395a
- Identifier
- doi / 10.5285/5c2b70d069cb467ab73e80b84c3e395a
- Maintenance and update frequency
- unknown Unknown
- Update scope
- dataset Dataset
- Keywords
-
- AVISO
- Global
- Ocean Lagrangian Trajectories
- LAMTA
- zonal
- meridional model
- OLTraj_SEALEVEL_GLO_PHY_L4_REP_OBSERVATIONS_008_047
- GEMET - INSPIRE themes, version 1.0
-
- orthoimagery
- Access constraints
- otherRestrictions Other restrictions
- Other constraints
- Public data: access to these data is available to both registered and non-registered users.
- Use constraints
- otherRestrictions Other restrictions
- Spatial representation type
- grid Grid
- Metadata language
- EnglishEnglish
- Topic category
-
- Imagery base maps earth cover
))
- Begin date
- 1998-01-01T00:00:00
- End date
- 2019-12-31T00:00:00
- Unique resource identifier
- WGS 84
- Distribution format
-
-
NetCDF
()
-
NetCDF
()
- OnLine resource
-
CEDA Data Catalogue Page
Detail and access information for the resource
- OnLine resource
-
DOWNLOAD
Download Data
- OnLine resource
-
Spasso Software Package (includes LAMTA)
No further details.
- OnLine resource
-
AVISO
No further details.
- OnLine resource
-
Nencioli et al., 2018
No further details.
- OnLine resource
-
GLOBAL OCEAN GRIDDED L4 SEA SURFACE HEIGHTS AND DERIVED VARIABLES REPROCESSED
No further details.
- Hierarchy level
- dataset Dataset
Conformance result
- Date (Publication)
- 2010-12-08
- Statement
- Data were produced by the NCEO Plymouth Marine Laboratory project team and supplied for archiving at the Centre for Environmental Data Analysis (CEDA).
- File identifier
- 5c2b70d069cb467ab73e80b84c3e395a XML
- Metadata language
- EnglishEnglish
- Character set
- 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 UTF8
- Parent identifier
- National Centre for Earth Observation (NCEO) Core datasets 82b29f96b8c94db28ecc51a479f8c9c6
- Hierarchy level
- dataset Dataset
- Date stamp
- 2025-11-16T03:21:44
- Metadata standard name
- UK GEMINI
- Metadata standard version
- 2.3
Overviews
Spatial extent
Provided by
