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

Date (Publication): 2021-08-19T14:44:50

Date (Creation): 2021-08-19T14:44:50

Citation identifier: https://catalogue.ceda.ac.uk/uuid/5c2b70d069cb467ab73e80b84c3e395a

Citation identifier: NERC EDS Centre for Environmental Data Analysis / 5c2b70d069cb467ab73e80b84c3e395a

Citation identifier: doi / 10.5285/5c2b70d069cb467ab73e80b84c3e395a

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Unavailable	Dall'Olmo, Giorgio	Unavailable	Author
Unavailable	Nencioli, Francesco	Unavailable	Author
NERC EDS Centre for Environmental Data Analysis		support@ceda.ac.uk	Custodian
NERC EDS Centre for Environmental Data Analysis		support@ceda.ac.uk	Distributor
Natural Environment Research Council (NERC)		unknown	Principal investigator
NERC EDS Centre for Environmental Data Analysis		support@ceda.ac.uk	pointofContact
NERC EDS Centre for Environmental Data Analysis		support@ceda.ac.uk	Publisher

Maintenance and update frequency: Unknown

Update scope: 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: Other restrictions

Other constraints: Public data: access to these data is available to both registered and non-registered users.

Use constraints: Other restrictions

Other constraints: Under the following licence http://creativecommons.org/licenses/by/4.0/, appropriate use of these data may fall under any use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.

Spatial representation type: Grid

Language: English

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

Name	Version
NetCDF

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
NERC EDS Centre for Environmental Data Analysis		support@ceda.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://catalogue.ceda.ac.uk/uuid/5c2b70d069cb467ab73e80b84c3e395a	CEDA Data Catalogue Page

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/neodc/oltraj/data/v2.2/	DOWNLOAD

OnLine resource

Protocol	Linkage	Name
	https://spasso.mio.osupytheas.fr/PKG-DOC/spasso_userguide.pdf	Spasso Software Package (includes LAMTA)

OnLine resource

Protocol	Linkage	Name
	https://www.aviso.altimetry.fr/en/home.html	AVISO

OnLine resource

Protocol	Linkage	Name
	https://doi.org/10.1029/2018JC013909	Nencioli et al., 2018

OnLine resource

Protocol	Linkage	Name
	https://resources.marine.copernicus.eu/?option=com_csw&view=details&product_id=SEALEVEL_GLO_PHY_L4_REP_OBSERVATIONS_008_047	GLOBAL OCEAN GRIDDED L4 SEA SURFACE HEIGHTS AND DERIVED VARIABLES REPROCESSED

Hierarchy level: Dataset

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

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).

Metadata

File identifier: 5c2b70d069cb467ab73e80b84c3e395a XML

Metadata language: English

Character set: UTF8

Parent identifier: National Centre for Earth Observation (NCEO) Core datasets
82b29f96b8c94db28ecc51a479f8c9c6

Hierarchy level: Dataset

Date stamp: 2026-03-11T03:23:19

Metadata standard name: UK GEMINI

Metadata standard version: 2.3

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS Centre for Environmental Data Analysis		support@ceda.ac.uk	Point of contact

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