Mobile version

Near-Real Time vs Delayed Time

Lively Data : July 31, 2006

The Live Access Server can provide two sorts of Sea Level Anomalies (SLA) at a given time: SLA maps processed in Near-Real Time (NRT) or SLA maps processed in Delayed Time (DT). NRT datasets do not profit from a precise orbit determination, as reprocessed DT datasets do, thus there could be some quality differences between them. Hereafter an exemple in Southern Pacific:

Difference between DT Maps of Sea Level Anomalies and NRT Maps of Sea Level Anomalies, January 5, 2005.
Select "Compare two" option, then Delayed Time merged Maps of Sea Level Anomaly, followed by Near-Real Time ones. The "comparison plot" is already selected by default, so you then only have to adjust your color palette in the "Output options"; our fill levels are defined by (-20,20,1).

 

The map highlights that differences can reach 6 to 8 cm, which is not negligible for mesoscale applications; the larger values located closed to Australia are probably due to coastal artefacts. It's up to you now to choose your data, depending on your studies!
Please note that the Live Access Server is not yet fully up-to-date with Ssalto/Duacs evolutions, and that in a couple of weeks it will.

 

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!