Global Ocean Lagrangian Trajectories based on AVISO velocities, v2.1

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 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 the year 2018 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 2.1 has the same resolution as version V2.0 but has double value for time variables to permit access via THREDDS

Simple

Date (Publication)
2021-08-19T14:44:17
Date (Creation)
2021-08-19T14:44:17
Citation identifier
https://catalogue.ceda.ac.uk/uuid/12eae5e708e541f390898af4187a1c20
Citation identifier
Centre for Environmental Data Analysis (CEDA) / 12eae5e708e541f390898af4187a1c20
Point of contact
Organisation name Individual name Electronic mail address Role

Unavailable

Dall'Olmo, Giorgio

Unavailable

 		Author

Unavailable

Nencioli, Francesco

Unavailable

 		Author

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Custodian

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Distributor

Natural Environment Research Council (NERC)

unknown

 		Principal investigator

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

pointofContact

Centre for Environmental Data Analysis (CEDA)

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
N
S
E
W
thumbnail




Begin date
1998-01-01T00:00:00
End date
2019-12-31T00:00:00
Unique resource identifier
WGS 84
Distribution format
Name Version

NetCDF file

A reformatted version of the v2.0 dataset. In this version V2.1 the int64 time value was changed to double to allow Jupyter Notebook access via THREDDS/OpenDAP.

Distributor contact
Organisation name Individual name Electronic mail address Role

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Distributor
OnLine resource
Protocol Linkage Name
https://catalogue.ceda.ac.uk/uuid/12eae5e708e541f390898af4187a1c20

CEDA Data Catalogue Page
OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/neodc/oltraj/data/v2.1/

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://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
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
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
12eae5e708e541f390898af4187a1c20 XML
Metadata language
English
Character set
UTF8
Parent identifier
National Centre for Earth Observation (NCEO) Core datasets

82b29f96b8c94db28ecc51a479f8c9c6
Hierarchy level
Dataset
Date stamp
2026-01-14T03:21:08
Metadata standard name
UK GEMINI
Metadata standard version

2.3
Metadata author
Organisation name Individual name Electronic mail address Role

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Point of contact
 
 

Overviews

Spatial extent

thumbnail

Keywords

GEMET - INSPIRE themes, version 1.0

orthoimagery


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