The U.S-launched V-2 flight on Octotook one image every 1.5 seconds.

The first images from space were taken on sub-orbital flights. At the time, the satellite was crossing Mexico. The photo was taken when the satellite was about 17,000 mi (27,000 km) above the surface of the earth on August 14, 1959. These models are able to show precisely current precipitation in US and Europe.The first crude image taken by the satellite Explorer 6 shows a sunlit area of the Central Pacific Ocean and its cloud cover. Two models, EURAD and USRAD, are based on current radar and satellite readings. Calculations are done in one-hour increments for 16 hours. The resolution of the model is roughly 2 km. This is a regional model developed by the American National Oceanic and Atmospheric Administration ( NOAA). Calculations are done in three-hour increments for 10 days. The resolution of the model is roughly 25 km. This is the global model developed by the Canadian Meteorological Centre ( CMC). The resolution of the model is roughly 22 km. This is a global model developed by the American National Oceanic and Atmospheric Administration ( NOAA). This makes it the most useful model readily available and covering the whole of Europe. The regional model, ICON-EU uses a 7 km grid. The resolution of the model is roughly 13 km. This is a global model developed by the German National Meteorological Service institution ( DWD). When interpreting the data from the models, it is important to keep in mind that the numerical model predicts the atmosphere in simplified form.

In the Ventusky application, you will find data from the American model, GFS, the Canadian GEM, the German ICON and several regional models (ICON EU, COSMO, NBM, HRRR). The solutions to these equationsĪre reached using numerical models that calculate future weather development (temperatures, pressure, precipitation, etc.), in which the input data come from,įor example, observations from meteorological stations or satellite data. The equations themselves are extremely complex and high-performance computers are needed to solve them. The atmosphere is a physical system whose behaviour is governed by the laws of physics and can be described using mathematic equations. In order to predict the weather, a meteorologist needs to know basic variables such as temperature, pressure, humidity, and wind current.

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