Welcome to the Interactive METEOSAT (IM) webmapping application
This application allows you to compare meteorological observations with METEOSAT satellite imagery. If this help does not answer your questions, please take a look at the User manual and the IM case study.
The user interface is composed of several sections, each of which is described below:
The map is the main component of this application. Apart from displaying geographic information, it contains a navigation tool that allows you to zoom and pan around the map. The map is refreshed after each action you perform. A progress bar is displayed while new information is loaded into the map.
The toolbar contains all the instruments needed for map navigation (zoom, pan, etc.). A tooltip is displayed when you move the mouse cursor over the tools. The far-right tool allows you to switch between Geostationary and Map viewers.
Located on the left side of the application, the tab panels allow you to switch between Layers list Meteorological Measurement Info and Help section. The entire left panel can be collapsed to make more space for the map.
The layers list is used to determine the way the map is composed and displayed. IM layers are grouped in three categories: Base layers (you can only toggle between these layers), METEOSAT (you can show/hide these layers and define one active layer), Meteorological observations (you can show/hide these layers). Each layer has at least one associated checkbox. The checkbox allows you to control the map composition by turning on and off the layer visibility. You can adjust the transparency for the active layer using the transparency slider.
Important notice: For technical reasons, and due to the Eumetsat data policy, the Meteosat channels from 09:00 UTC are available in higher resolution only at 12:00 UTC. However, all but the VIS 0.8 and NIR 1.6 channels are available in lower resolution format soon after image acquisition. The VIS 0.8 and NIR 1.6 channels from the previous day are shown until 12:00 UTC when the higher resolution images from the current day are made available.
The slider allows you to change the transparency of the active layer.
This section provides a legend for the meteorological symbols displayed on the map.
When you click on a meteorological observation on the map, details of that observation appear in this section. Also, all the observations from the selected day are listed here.
This section mentions all the sources that have contributed to this application. This includes data sources, software, graphics and other contributions.
The calendar allows you to display satellite images and meteorological observations from the archive.
The observations management interface can be accessed by clicking on the upper-right link.
|Symbol color||Values (Celsius degrees)|
|-21º — -25º|
|-16º — -20º|
|-11º — -15º|
|-6º — -10º|
|-1º — -5º|
|0º — 4º|
|5º — 9º|
|10º — 14º|
|15º — 19º|
|20º — 24º|
|25º — 29º|
|30º — 34º|
|35º — 39º|
|40º — 44º|
Wind barbs point in the direction 'from' which the wind is blowing. In the case of the diagram below, the orientation of the wind barb indicates winds from the Northeast.
Each short barb represents 5 knots, each long barb 10 knots. A long barb and a short barb is 15 knots, simply by adding the value of each barb together (10 knots + 5 knots = 15 knots). If only a circle is plotted, the winds are calm. Pennants are 50 knots. Therefore, the last wind example in the chart below has a wind speed of 65 knots. (50 knots + 10 knots + 5 knots).
|Symbol||Values Knots||Values m/s|
|1 - 4||0.5 - 2|
|Scattered clouds (1/4)|
|Partly cloudy (1/2)|
|Mostly cloudy (3/4)|
Daily temperature average, maximum and minimum values collected through GLOBE network. The symbol colors are correlated with the IM temperature legend. Important notice: The GLOBE observations are from the previous day.
Interactive METEOSAT (IM) is a web-based interactive application for the teaching of satellite meteorology in secondary schools. IM was developed by ASRC for the Eduspace website of the European Space Agency (ESA). IM is build entirely with standard compliant free and open source software.
© Dane Springmeyer (GPL license)
GNOME Desktop Icons
© http://gnome.org (GPL 2.0)
Peter Brøgger Sørensen, Jürg Lichtenegger and Roger Nay, the persons behind the original Interactive Meteosat idea.
Natural Earth Browser
Atlas of water and health
Click on the symbols (map or table bellow) to get more detailed information about meteorological observations.