Mobile version

Several altimetry satellites for ocean forecasts

Image of the month - July 2005

Sea level anomalies on January 8, 2003 from Medium-resolution Mercator model (1/3°), with assimilation of in situ, SST measurements and, left only Jason-1 data, right all available altimetry satellite data (Jason-1, ERS-2 et GFO). More details can be seen on the right-hand figures. Differences between the two can reach 10 cm, mostly between Jason-1 ground tracks (black lines). (Credits Mercator Océan)

Ocean forecasting models, like their meteorological cousins, are in need of measurements to stay as close as possible to reality. Satellite altimetry measurements are the most invaluable dataset for that mean, due to what they represent in term of ocean dynamics, but also since they are well-known and independant from cloud-cover. But, here also, several altimeters are better than one! Forecast quality, in resolution as well as in accuracy, is improved by assimilating data from several altimetry satellites at the same time.
Mercator project, which celebrated its 10th anniversary on June 26, 2005 is one of the operational oceanography projects that are been developed all around the world. All of them use altimetry data, which are, with in situ data and models the basis of this "ocean weather". Their applications, from pollution drifting forecasts to seasonal climate prediction, and contribution to coastal and ecosystem models, give the inputs for future "ocean reports".

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!