Mobile version

Ice on Lake Baikal

Ice on Lake Baïkal are not sea ice but their spead can also be measured by altimetry.

The date when a lake is frozen, or freed by ice are major climate indicators. Lake Baikal is the deepest and biggest lake in the world (it contains 20 % of fresh water on Earth excluding glaciers), with specific fauna and flora. Ice cover influences such physical water parameters as its transparency, temperature, turbulence, water stratification, currents, etc., as well as primary production and spring diatoms blooms. Moreover, its iced surface is used as a road in winter, with thus an economic impact of such information.
The lake ice cover can be studied using simultaneously the power received by the radar altimeters after reflection on the surface (backscatter coefficient) in Ku band and the brightness temperature from the bi-frequency radiometers onboard Topex/Poseidon, Jason-1, Envisat and GFO, combined with passive microwave measurements (like those of SSM/I). Comparing these two kinds of information, it is possible to determine the type of surface - ice or water.
The data obtained on the basis this information (i.e. dates when the lake is completely frozen, when the ice breaks up, and fast-ice duration) match well the in situ observations, unfortunately scarcer and scarcer (and more difficult to access).

More information :

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!