Mobile version

Day by day, the Agulhas Current

Lively Data : December 21, 2006

Since last summer Duacs products are available on a daily basis (against 3 days before). The maps are still representative of one day only (even the software uses several weeks of data to produce them), and the temporal sampling gets improved.
Let's consider the example of the Agulhas system, where the rings are the subject of a couple of studies.

Top: absolute dynamic topography on september 1st, 2006 and september 2nd, 2006.
The third plot displays differences between the two maps.

Datasets: SSALTO/DUACS near-real time Absolute Dynamic Topography; variable: Maps of Absolute Dynamic Topography Merged.
To use LAS comparison function, click on "compare two", and take the same data as variables (here "Maps of Absolute Dynamic Topography"). Then, choose two dates, here September 2 and September, 1, 2006. Dynamic topography maps were obtained by setting the color scale to (0,320,5) and the contour levels to (195,320,15).
Note that using sea level anomalies (MSLA) to compute the difference, you would obtain exactly the same map, because MADT = MSLA + MDT.

This example highligths areas where differences between two consecutive days are higher. Differences from one day to another could appear to be not so important; but third map show that these differences can sometimes reach 38 cm, which is not negligeable.

Use the Live Access Server

 

EnglishFrançaisEspañol
Rss feedsContactSitemapPartnersFAQGlossaryLexiconMobile
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

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!