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Cnes (Centre National d'Etudes Spatiales)

 

Mission

Founded in 1961, the Centre National d'Etudes Spatiales (Cnes) is the government agency responsible for shaping and implementing France's space policy in Europe. Its task is to invent the space systems of the future, bring space technologies to maturity and guarantee France's independent access to space.
Cnes is a pivotal player in Europe's space programme, and a major source of initiatives and proposals that aim to maintain France and Europe's competitive edge.
It conceives and executes space programmes with its partners in the scientific community and industry, and is closely involved in many international cooperation programmes-the key to any far-reaching space policy.
The agency's more-than 2,400-strong workforce constitutes an exceptional pool of talent, with some 1,800 engineers and executives, 35% of whom are women.
Through its ability to innovate and its forward-looking vision, Cnes is helping to foster new technologies that will benefit society as a whole, focusing on:

  • access to space 
  • civil applications 
  • earth, environment and climate 
  • space sciences and preparing the future 
  • security and defence

From AVISO to AVISO+

AVISO is the showcase of Cnes activities in altimetry. Indeed, the altimetric products processed by the SALP service from Cnes (Service d'Altimétrie et de Localisation Précise) are distributed via AVISO portal since 1998. In recent years, AVISO has become a reference in international oceanographic and altimetric communities. In 2013, there were over 5000 registered users.
In 2014 AVISO opens to wider applications than the ocean themes. Thus becoming AVISO +, the portal opens to hydrology / coastal / ice and merges with the CTOH website to provide users with more operational and demonstration products, and expertise in an intuitive and modern web site.

Here is the new symbol of AVISO + :

  • 4 key themes (Ocean / Coast / Hydrology / Ice)
  • 2 complementary processing centers (Operational CNES / Research CTOH)
  • a shared vision and commitment to study of Earth from space and water issues, in all its forms.


Thank you to embark with us into this new adventure!

CTOH (Center for Topographic studies of the Ocean and Hydrosphere

Mission

The CTOH is a French Observation Service dedicated to satellite altimetry studies. The CTOH aims to help scientific users develop new altimetric products and applications. Within this framework, the CTOH maintains homogeneous altimetric data bases for the long-term monitoring of sea level and ocean currents, lake and river levels, the cryosphere, and the planet's climate.
The CTOH team collaborates with different scientific investigators to improve the quality of the altimetric measurements and their derived products, and to facilitate their use by scientists.
The CTOH is also an independent centre of expertise for the primary data distribution centres (AVISO for Topex/Poseidon, Jason-1 and ENVISAT in Toulouse; ESA at ESRIN, Italy, and CERSAT for ERS1/2 in Brest), and for preparing future altimetric missions.
Today, new scientific applications for altimetry are appearing : monitoring lake and river levels, the study of the continental snow and the cryosphere, flooded zones, coastal applications. The CTOH contributes to the processing and management of the altimetric data for these "emerging" research domains.
Established in 1989, the CTOH is an INSU service, supported by the Centre National de la Recherche Scientifique (CNRS), Centre National d'Etudes Spatiales (Cnes), Observatoire Midi-Pyrénées (OMP), Pôle Océan-Altimétrie-Climat (CPER).

In 2014, the CTOH website is merged with the AVISO website to allow an operational product dissemination and a better visibility of the observation service within the altimetric community.

Organisation

CTOH is hosted at Legos in Toulouse (France) and has an INSU label as an "observation service".

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

Customizable homepage

The new 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!