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The PPI effort started fairly early in the history of radar; Hans Hollmann of Telefunken filed a patent for the multi-phase electrostatic deflection in a cathode-ray tube "along a conical surface of revolution" "such as required in practice for instance for the feeding of certain directional antenna systems, or the like" in 1936. [1]
GAFOR ("General Aviation Forecast") is a format for reporting weather information for aviation purposes. The GAFOR is used in many European countries. In order to easy transmit and understand GAFOR forecasts, the original (local) names are systematically replaced by a code number. There are two kinds of application:
Wetterpark Offenbach, Germany. The Deutscher Wetterdienst (German pronunciation: [ˌdɔʏ̯ʧɐ ˈvɛtɐdiːnst]) or DWD for short, is the German Meteorological Service, based in Offenbach am Main, Germany, which monitors weather and meteorological conditions over Germany and provides weather services for the general public and for nautical, aviation, hydrometeorological or agricultural purposes.
Weather radar in Norman, Oklahoma with rainshaft Weather (WF44) radar dish University of Oklahoma OU-PRIME C-band, polarimetric, weather radar during construction. Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.).
A surface weather analysis for the United States on October 21, 2006. By that time, Tropical Storm Paul was active (Paul later became a hurricane). Surface weather analysis is a special type of weather map that provides a view of weather elements over a geographical area at a specified time based on information from ground-based weather stations.
After an hour, JPEGView stops, the weather maps are deleted a new set of maps are downloaded. JPEGView starts again and the new maps are displayed. The specific computers used in the weather map display system are two Macintosh IIvx computers built in 1992, a Macintosh LC III from 1993, a Macintosh Centris 610 from 1994 and two Power Macintosh ...
At the end of 2017, it was used by 4.9 million users. In 2017, a private weather forecast company brought suit against DWD, because of its free app in 2017. After judgment by the district court of Bonn, there is a free app with commercials and another version for which users have to pay. [10]
In 2015, Google chose OpenWeatherMap as a weather data provider for its bid-by-weather script in Google Ads, which serves the ads based on the local weather conditions, such as temperature, humidity, and cloudiness. [3] In the same year, Google published documentation on how to use OpenWeather data to display weather conditions on Google Maps. [4]