Altimetry product SWOT (KaRIn + nadir) Level 3 Ocean - version Unsmoothed

The SWOT L3_LR_SSH product provides ocean topography measurements obtained from the SWOT KaRIn and nadir altimeter instruments, merged into a single variable. The dataset includes measurements from KaRIn swaths on both sides of the image, while the measurements from the nadir altimeter are located in the central columns. In the areas between the nadir track and the two KaRIn swaths, as well as on the outer edges of each swath (restricted to cross-track distances ranging from 10 to 60 km), default values are expected.

SWOT L3_LR_SSH is a cross-calibrated product from multiple missions that contains only the ocean topography content necessary for thematic research (e.g., oceanography, geodesy) and related applications. This product is designed to be simple and ready-to-use, and can be combined with other altimetry missions. The SWOT L3_LR_SSH product is a research-orientated extension of the L2_LR_SSH product, distributed by the SWOT project (NASA/JPL and CNES). SWOT L3_LR_SSH is managed by the SWOT Science Team project DESMOS.

The ['Unsmoothed'] version of SWOT L3_LR_SSH (the "Basic" and "Expert" versions are the subject of separate metadata sheets) includes each algorithm, correction, or external model incorporated into the SWOT L3_LR_SSH product as a separate layer. This ['Unsmoothed'] version which includes the MSS, MDT and geostrophic currents (absolute and anomalies) in addition to the SSHA and MDT on the 250 m KaRIn native grid. Like the Expert subproduct, it also integrates a quality flag, corrections and external models as separate layers.

Simple

Date (Creation)
2024-06-26
Date (lastUpdate)
2024-05-07
Version
v1.0
Status
onGoing On going
Point of contact
  Helpdesk AVISO-SWOT
Distributor
  CNES
funder
  CNES
GEMET - INSPIRE themes, version 1.0
  • Oceanographic geographical features
Cersat - Parameter
  • Sea Surface Topography
Cersat - Latency
  • Less than 4 months
Cersat - GCMD parameter
  • /Tides/Tidal Height
  • /Sea Surface Topography/Sea Surface Height
  • /Ocean Circulation/Ocean Currents
Centre de données ODATIS
  • CDS-AVISO
Type de jeux de donnée ODATIS
  • /Observational data/satellite
ODATIS aggregation parameters and Essential Variable names
  • Tides
  • Currents
  • Sea surface height
Specific usage
Update
Use limitation
None
Access constraints
unrestricted
Use constraints
Other restrictions
Other constraints
"The SWOT_L3_LR_SSH product, derived from the L2 SWOT KaRIn low rate ocean data products (NASA/JPL and CNES), is produced and made freely available by AVISO and DUACS teams as part of the DESMOS Science Team project". AVISO/DUACS, 2024. SWOT Level-3 KaRIn Low Rate SSH Unsmoothed (v1.0) [Data set]. CNES. https://doi.org/10.24400/527896/A01-2024.003
Unique resource identifier
aa2927ad-d1d6-4867-89d3-1311bc11e6bb
Association Type
Cross reference
Unique resource identifier
8c961685-cecb-41d9-b2d9-2a22cdd3d0c2
Association Type
Cross reference
Spatial representation type
grid Grid
Distance
250  m
Topic category
  • Oceans
N
S
E
W
thumbnail


Begin date
2023-03-30
Reference system identifier
http://www.opengis.net/def/crs/EPSG/0/4326
Distribution format
  • NetCDF ( 4 )

OnLine resource

No information provided.
OnLine resource
SWOT L3_LR_SSH Unsmoothed ( WWW:LINK )

THREDDS

OnLine resource
Other document ( WWW:LINK )

AVISO website

OnLine resource
Other document ( WWW:LINK )

SWOT Frequently Asked Questions (FAQ)

OnLine resource
Other document ( WWW:LINK )

Poster at SWOT Science Team 2023, Dibarboure et al. SWOT Level-3 Overview algorithms and examples

OnLine resource
Other document ( WWW:LINK )

Presentation at SWOT Science Team 2023, Dibarboure et al. SWOT Level-3 Overview algorithms and examples

OnLine resource
Software ( WWW:LINK )

Tutorials, notebooks, GitHub SWOT community

OnLine resource
Other document ( WWW:LINK )

AVISO SWOT Orbit files (kml and shapefile) for the 1-day and 21-day orbits

OnLine resource
Web link (URL) ( WWW:LINK )

Produit altimétrique SWOT (KaRIn + nadir) Niveau 3 Océan - version Basic

OnLine resource
User guide ( WWW:LINK )

User Manual

OnLine resource
Web link (URL) ( WWW:LINK )

Produit altimétrique SWOT (KaRIn + nadir) Niveau 3 Océan - version Expert

Distribution format
OnLine resource
Digital Object Identifier (DOI) ( DOI )
Hierarchy level
Dataset
Date / Time
V0.3 2023-12-22
Hierarchy level
Dataset
Date / Time
V1.0 2024-05-07
Hierarchy level
Dataset
Attribute description
pass
Processing level code
L3 /
File identifier
de48c5b5-18f7-4829-ba0e-78f3dff047ac XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2024-10-15T14:42:52.681447Z
Metadata standard name
ISO 19115-3:2018 - Remote Sensing ISO 19115-3:2018 - Remote Sensing
editor
  AVISO
 
 

Overviews

overview

Spatial extent

N
S
E
W
thumbnail


Keywords

Centre de données ODATIS
CDS-AVISO
Cersat - GCMD parameter
/Ocean Circulation/Ocean Currents /Sea Surface Topography/Sea Surface Height /Tides/Tidal Height
Cersat - Latency
Less than 4 months
Cersat - Parameter
Sea Surface Topography
GEMET - INSPIRE themes, version 1.0
Oceanographic geographical features
ODATIS aggregation parameters and Essential Variable names
Currents Sea surface height Tides
Type de jeux de donnée ODATIS
/Observational data/satellite

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Associated resources

Not available