Mobile version

Readying for SWOT data to be used in hydrology applications

Image of the Month - May 2016


In the frame of the SWOT mission, an hydrological simulator is being made available in order to get familiar with the data and test different processing algorithms.

Among the science teams using it, the CERFACS/LNHE/LEGOS teams have investigated a downstream region of the Garonne River between Tonneins and La Réole, while IMFT/IMT/ICUBE/LEGOS teams have studied a section further upstream, between Blagnac and Malause (see left). Top figure shows the simulator outputs obtained for a flow rate of 600m3/s (module of the Garonne River, i.e. the mean inter-annual flow rate) simulated with the Telemac 2D  hydrodynamic model for the downstream section. Two other cases have already been simulated: one with a flow of 2500 m³/s (full flow at flood stage level) and a case of flooding with a flow rate of 3800 m³/s (full flow at flood plain level). Simulated SWOT observations in steady-state regime at low flow (160 m³/s), for the Garonne module and for a flow rate of 800 m³/s have also been simulated for the upstream section. It is planned to use multi-temporal SWOT simulations in non-steady-state regimes for these two sections in the near future. These simulations are not only useful for becoming familiar with the time/frequency rationale of future SWOT observations but also enable teams to take this new type of data on board and set up the processing tools needed to gear them to scientific research (to study SWOT’s contribution to current assimilation models, for instance).

Other areas currently being investigated include the Seine and Gironde estuaries [B. Laignel et al., Living Planet 2016: Potential use of the SWOT satellite to characterise the hydrodynamics of French rivers, estuaries and coasts], Lake Poyang in China [LEGOS/SERTIT teams] and the Congo Basin [CNES].

Contacts: Sylvain Biancamaria (LEGOS)  and Claire Pottier (CNES)

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!