Mobile version

Gridded Wind / Wave products processing

  Monomission     Multimission  
  Input data:  
  • Last 5 days of IGDR data available for each satellite.
    It is thus possible that no map is generated on a given day for a given satellite, if there aren't any new data.
  • Last 2 days of IGDR data available for each satellite.
    A merged map is generated if a minimum of 2 missions are available.
  • Averaging of a mono-mission array by 1°x1° boxes.
  • Smoothed and extrapolated by a Loess filter of 16° x 8° (gaps due to missing data are filled, signal is strongly smoothed).
    Extrapolation is limited to 8°x4°, in order to avoid artificially filling areas without data.
  • A reduced bathymetry mask is applied : each point more than 2° from the sea is forced to default value.
  • If more than 30% of the points have default values, no map will be generated.
  • Data are cross-calibrated using OSTM/Jason-2 as reference mission.
    First, sigma0 and waves histograms are calibrated, then the OSTM/Jason-2 wind algorithm is applied to crosscalibrated sigma0.
  • Mapping method is then the same as for monomission maps.
  • The resulting map may be improved in case of additional mission availability: in that situation a new map will be provided, replacing the "old" one.
Significant wave heights, Jason-1
April 13, 2006 - April 18, 2006  
Merged significant wave heights
April 16, 2006 - April, 18 2006  



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!