Mobile version

SWOT KaRIn Low Rate Ocean products

Type of dataset: SWOT KaRIn Low Rate Sea Surface Height products (L2_LR_SSH)

- SWOT_L2_KaRIn_SSH_Basic: 10.24400/527896/a01-2023.013  -  more metadata
- SWOT_L2_KaRIn_SSH_WindWave: 10.24400/527896/a01-2023.014  -  more metadata
- SWOT_L2_KaRIn_SSH_Expert: 10.24400/527896/a01-2023.015  -  more metadata
- SWOT_L2_KaRIn_SSH_Unsmoothed: 10.24400/527896/a01-2023.016  -  more metadata

Contents: The L2_LR_SSH product provides measurements over ocean surfaces from the low rate (LR) data stream of the SWOT KaRIn instrument. The L2_LR_SSH product is available continuously and globally, with a latency of less than 45 days, although different versions of the product may be generated at different latencies and/or through reprocessing with refined input data. Note that the L2_LR_SSH product does not include SSH data from the SWOT nadir altimeter. Nadir altimeter data are available from separate data products. 

Use: high resolution global ocean altimetry, coastal currents and processes, oceanic mesoscale and sub-mesoscale processes, ocean bathymetry.

Condition of access: L2_LR_SSH product's processing and distribution are conducted by the joint NASA/CNES project in collaboration with the SWOT Science Team (ST). To date, KaRIn beta pre-validated products are only made available to support SWOT mission validation.

Description: the L2_LR_SSH product is organized into four files per product granule, as some users may be interested in only a small fraction of the full data product.
Three of the files in the L2_LR_SSH product are sampled on a geographically fixed, swath-aligned 2 km grid. These files are referred to as:

  1. Basic SSH [‘Basic’],
  2. Wind and Wave [‘WindWave’], and
  3. Expert SSH with Wind and Wave [‘Expert’].

The fourth file in the L2_LR_SSH product, referred to as Unsmoothed SSH [‘Unsmoothed’] file, is sampled on a finer spatial grid of approximately 250 m, and has a significantly larger data volume than the three other files. Note that the measurements in this file have a resolution of approximately 500 m (the data are oversampled by about a factor of 2 in each direction).

Further information about the L2_LR_SSH product can be found here.

Citation: "The SWOT L2_LR_SSH data product is made freely available by the SWOT project and the national programs that contribute to it. L2_LR_SSH product quality is not final and will be affected by some evolutions as the SWOT project team makes progress on science data processing algorithms and instrument calibrations." SWOT Project. (2023). SWOT Level-2 KaRIn Low Rate SSH + FileType (Version x.x) [Data set]. CNES. + DOI

Geographic coverage: global


Level 2 KaRIn Low Rate Sea Surface Height Data Product (Beta Pre-validated only)

Product files AVISO Distribution services Delivery delay Grid File size Handbook
/day /year
L2_LR_SSH [‘Basic’] Available via your personal space: MY AVISO+
and the new AVISO+ Cnes Data Center archive (new users can fill the following registration form for data access, with identical credentials for both services)
- 2 km ​geographically fixed ​swath-aligned grid​ 1 GB 365 GB User Guide L2 KaRIn LR SSH product
​L2_LR_SSH [‘WindWave’]​ - 1 GB 365 GB
L2_LR_SSH [‘Expert’]​ - 3 GB 1 TB
L2_LR_SSH [‘Unsmoothed’]​ - ~250 m ​center-beam (native) ​sampling grid​ 40 GB 15 TB
Rss feedsContactPartnersFAQLexiconLegal noticePersonal Data Protection PolicyMobile
You must enable cookies in your browser preferences to save the modifications
You are using an older version of Internet Explorer, please update to take full advantage of Aviso+ features

Customize the home page

View all widgets
Reduce display
Public profile
User profile

Select/Deselect widgets

Discover AVISO+

Customizable home, reading tools, products search guide, etc.. Discover step by step the features of the new site AVISO+.

Customizable homepage

This home page is composed of blocks called "widgets".

Rearrange the blocks with a "Click & Drop".

Hide a widget with the cross at the top right. Reset or add a widget with the "wrench" icon. The "User" and "Public" profiles offer a predefined organization.

All the modifications are automatically saved as cookies on your machine so as to enable you to have your own specific AVISO+.

Reading tools

Ease your reading by choosing the page background colour (black/white) and/or by modifying the font size.

Browsing menu and breadcrum trail

To ease your browsing through AVISO+, you can use at any time the main banner items with the interactive submenus or use the browsing menu on the left side of the screen (it is open by default). For more readiness of the page contents, you can fold and unfold the browsing menu by clicking on the tab. At any time you can know where you are thanks to the browsing menu or the breadcrum at the top of the page.

Products search guide

The first submenu of the "Data" banner item leads you to a new search form enabling you to find quickier the product that suits your needs. The list of results is updated according to your selection criteria.

AVISO+ Multimedia

The first submenu of the "Multimedia" banner item leads you to AVISO+ collections of images and videos linked to altimetry and its applications. Have a nice visit!