Mobile version

A temporal slice

Lively Data : November 24, 2003

"Longitude-Time" (or "Hovmoller") diagrams are a way to see the moves of some phenomena along time. Periodic phenomena, for example, are tranlated by parallel lines. Rossby and Kelvin waves (cf Applications: Waves across the water) are thus visible. Their role in the El Niño phenomenon makes this visualization useful, since you can see the East-West propagation clearly.

Merged sea level anomalies Hovmoller diagrams over the Tropical Pacific, from August 2001 to October 2003, at the Equator (left, automatic color scale; right, forced to -20 cm/+20 cm, see Lively data for July 7,2003). To plot such diagrams,you need, after choosing a variable, to select "xt (hovmoller) slice" in "select view" (default is "xy (lat/lon) slice"), choose a latitude and interesting longitudes (here 140°E-80°W, i.e. the whole Pacific width). Then, you can choose a period.

Use the  Live Access Server

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!