• Metadata catalogue
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GLOBAL OCEAN ALONG-TRACK L3 SEA SURFACE HEIGHTS REPROCESSED (1993-ONGOING) TAILORED FOR DATA ASSIMILATION

'''Short description:'''

Altimeter satellite along-track sea surface heights anomalies (SLA) computed with respect to a twenty-year [1993, 2012] mean. All the missions are homogenized with respect to a reference mission (see QUID document or http://duacs.cls.fr [http://duacs.cls.fr] pages for processing details). The product gives additional variables (e.g. Absolute Dynamic Topography, ADT) that can be used to change the physical content for specific needs. This product is processed by the DUACS multimission altimeter data processing system. It serves in near-real time the main operational oceanography and climate forecasting centers in Europe and worldwide. It processes data from all altimeter missions: Jason-3, Sentinel-3A/B, HY-2A, Saral/AltiKa, Cryosat-2, Jason-2, Jason-1, T/P, ENVISAT, GFO, ERS1/2. It provides a consistent and homogeneous catalogue of products for varied applications, both for near real time applications and offline studies.

To produce SLA in delayed-time (REPROCESSED), the system uses the Geophysical Data Records which are computed from a Precise Orbit Ephemeris (POE) and are delivered within 3 months depending on the mission. Reanalysis products are more precise than NRT products. The system acquires and then synchronizes altimeter data and auxiliary data; each mission is homogenized using the same models and corrections. The Input Data Quality Control checks that the system uses the best altimeter data. The multi-mission cross-calibration process removes any residual orbit error, or long wavelength error (LWE), as well as large scale biases and discrepancies between various data flows; all altimeter fields are interpolated at crossover locations and dates. After a repeat-track analysis, a mean profile, which is peculiar to each mission, or a Mean Sea Surface (MSS) (when the orbit is non repetitive) is subtracted to compute sea level anomaly. The MSS is available via the Aviso+ dissemination (http://www.aviso.altimetry.fr/en/data/products/auxiliary-products/mss.html [http://www.aviso.altimetry.fr/en/data/products/auxiliary-products/mss.html]). Data are then cross validated, filtered from residual noise and small scale signals (sla_filtered variable). The ADT (Absolute Dynamic Topography, adt_filtered variable) is then computed as follows: adt_filtered=sla_filtered+MDT where MDT is the Mean Dynamic Topography distributed by Aviso+ (http://www.aviso.altimetry.fr/en/data/products/auxiliary-products/mdt.html [http://www.aviso.altimetry.fr/en/data/products/auxiliary-products/mdt.html]).

'''DOI (product)''':

https://doi.org/10.48670/moi-00146

 
Citation proposal
Yannice Faugère (SL-CLS-TOULOUSE-FR). GLOBAL OCEAN ALONG-TRACK L3 SEA SURFACE HEIGHTS REPROCESSED (1993-ONGOING) TAILORED FOR DATA ASSIMILATION. https://services.mspdata.eu:/geonetwork/srv/api/records/7336c88a-ddd3-4137-9d18-790a612335ef

Simple

Alternate title
SEALEVEL_GLO_PHY_L3_MY_008_062
Date ( Creation )
2012-08-26
Edition
2.1
Edition date
2012-08-28
Identifier
7336c88a-ddd3-4137-9d18-790a612335ef
Credit
E.U. Copernicus Marine Service Information

  Point of contact

SL-CLS-TOULOUSE-FR - servicedesk.cmems@cls.fr  

  Custodian

SL-CLS-TOULOUSE-FR - Yannice Faugère  

  Originator

SL-CLS-TOULOUSE-FR - Françoise MERTZ  

  Distributor

SL-CLS-TOULOUSE-FR - Françoise Mertz  

  Resource provider

SL-CLS-TOULOUSE-FR - Pascal Mambert  

Maintenance and update frequency
Irregular
Other
P0M0D0H/P0M0D0H
Maintenance note
N/A
Maintenance and update frequency
Annually
GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Oceanographic geographical features
Discipline ( Discipline )
  • satellite-observation
Climate and Forecast Standard Names ( parameter )
  • sea_surface_height_above_sea_level , sea_surface_height_above_geoid
Temporal scale ( temporal-scale )
  • multi-year
Area of benefit ( area-of-benefit )
  • marine-safety , coastal-marine-environment , marine-resources , weather-climate-and-seasonal-forecasting
Reference Geographical Areas ( reference-geographical-area )
  • arctic-ocean , global-ocean
Processing level ( processing-level )
  • Level 3
Model assimilation ( Theme )
  • Not Applicable
Use limitation
See Copernicus Marine Environment Monitoring Service Data commitments and licence at: http://marine.copernicus.eu/web/27-service-commitments-and-licence.php
Access constraints
Other restrictions
Use constraints
License
Other constraints
No limitations on public access
Aggregate Datasetindentifier
6be352f9-a484-499e-9bfe-f60100946cad
Association Type
Cross reference
Initiative Type
document
Aggregate Datasetindentifier
3abb7265-ac70-4ece-a426-c19b83837f4b
Association Type
Cross reference
Initiative Type
document
Metadata language
eng
Topic category
  • Oceans
Description
bounding box
N
S
E
W


Vertical extent

Vertical CRS
  •   urn:ogc:def:crs:EPSG:5714
Supplemental Information
display priority: 10100
Reference system identifier
EPSG / WGS84 / Simple Mercator (EPSG:41001)
Number of dimensions
2
Dimension name
Row
Resolution
7  km
Dimension name
Column
Resolution
7  km
Cell geometry
Area
Transformation parameter availability
false
Distribution format
  • NetCDF-4 ( )

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OnLine resource
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Hierarchy level
Series

Conformance result

Date ( Publication )
2010-12-08
Explanation
See the referenced specification
Statement
The myOcean products depends on other products for production or validation. The detailed list of dependencies is given in ISO19115's aggregationInfo (ISO19139 Xpath = "gmd:MD_Metadata/gmd:identificationInfo/gmd:aggregationInfo[./gmd:MD_AggregateInformation/gmd:initiativeType/gmd:DS_InitiativeTypeCode/@codeListValue='upstream-validation' or 'upstream-production']")

Metadata

File identifier
7336c88a-ddd3-4137-9d18-790a612335ef   XML
Metadata language
English
Character set
UTF8
Hierarchy level
Series
Hierarchy level name
Copernicus Marine Service product specification
Date stamp
2021-12-09T18:54:24
Metadata standard name
ISO 19139, MyOcean profile
Metadata standard version
0.2

  Point of contact

CMEMS  

Website
http://marine.copernicus.eu/  
 
 

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