RadarRadar is a radiolocation system that uses radio waves to determine the distance (ranging), angle (azimuth), and radial velocity of objects relative to the site. It is used to detect and track aircraft, ships, spacecraft, guided missiles, and motor vehicles, and map weather formations, and terrain. A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the objects.
National Weather ServiceThe National Weather Service (NWS) is an agency of the United States federal government that is tasked with providing weather forecasts, warnings of hazardous weather, and other weather-related products to organizations and the public for the purposes of protection, safety, and general information. It is a part of the National Oceanic and Atmospheric Administration (NOAA) branch of the Department of Commerce, and is headquartered in Silver Spring, Maryland, within the Washington metropolitan area.
PullyPully (pyˈji) is a municipality in Switzerland in the canton of Vaud, located in the district of Lavaux-Oron. It is one of the eastern suburbs of the city of Lausanne, located on the shores of Lake Geneva (Lac Léman) and at the foot of the vineyards of Lavaux on the road to Vevey and Montreux. Pully is first mentioned in 994 as Pulliacum. In 1826 a neolithic cemetery with about 30 graves was uncovered at Pierra-Portray. However, the artifacts were not fully preserved and only one flint blade and a soapstone fragment still exist.
LiechtensteinLiechtenstein (ˈlɪçtn̩ʃtaɪn), officially the Principality of Liechtenstein (Fürstentum Liechtenstein), is a German-speaking and doubly landlocked country and microstate located in the Alps between Austria and Switzerland. It is the sixth smallest nation worldwide. Liechtenstein is a semi-constitutional monarchy headed by the prince of Liechtenstein. Liechtenstein is bordered by Switzerland to the west and south and Austria to the east and north. It is Europe's fourth-smallest country, with an area of just over and a population of 38,749 ().
NyonNyon (njɔ̃; historically German: Neuis or Neuss and Italian: Nione, ˈnjone) is a municipality in Nyon District in the canton of Vaud in Switzerland. It is located some 25 kilometers north east of Geneva's city centre, and since the 1970s it has become part of the Geneva metropolitan area. It lies on the shores of Lake Geneva and is the seat of Nyon District. The town has () a population of and is famous in the sporting world for being the headquarters of the Union of European Football Associations (UEFA) and the European Club Association (ECA).
ZugZug (Standard German: tsuːk, Alemannic German: tsuːɡ̊; Zoug; Zugo; Zug; Tugium) is the largest town and capital of the Swiss canton of Zug in Switzerland. Its name, translating from German as "pull" or "tug", originates from the fishing vocabulary; in the Middle Ages it referred to the right to pull up fishing nets and hence to the right to fish. The municipality had a total population of in . The official language of Zug is the Swiss variety of Standard German, but the main spoken language is the local variant of the Alemannic Swiss German dialect.
LucerneLucerne (luːˈsɜrn , lysɛʁn; High Alemannic: Lozärn) or Luzern (luˈtsɛrn) is a city in central Switzerland, in the German-speaking portion of the country. Lucerne is the capital of the canton of Lucerne and part of the district of the same name. With a population of approximately 82,000 people, Lucerne is the most populous city in Central Switzerland, and a nexus of economics, transportation, culture, and media in the region. The city's urban area consists of 19 municipalities and towns with an overall population of about 220,000 people.
Pulse-Doppler radarA pulse-Doppler radar is a radar system that determines the range to a target using pulse-timing techniques, and uses the Doppler effect of the returned signal to determine the target object's velocity. It combines the features of pulse radars and continuous-wave radars, which were formerly separate due to the complexity of the electronics. The first operational Pulse Doppler radar was in the CIM-10 Bomarc, an American long range supersonic missile powered by ramjet engines, and which was armed with a W40 nuclear weapon to destroy entire formations of attacking enemy aircraft.
Synthetic-aperture radarSynthetic-aperture radar (SAR) is a form of radar that is used to create two-dimensional images or three-dimensional reconstructions of objects, such as landscapes. SAR uses the motion of the radar antenna over a target region to provide finer spatial resolution than conventional stationary beam-scanning radars. SAR is typically mounted on a moving platform, such as an aircraft or spacecraft, and has its origins in an advanced form of side looking airborne radar (SLAR).
FloodA flood is an overflow of water (or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrology and are of significant concern in agriculture, civil engineering and public health. Human changes to the environment often increase the intensity and frequency of flooding, for example land use changes such as deforestation and removal of wetlands, changes in waterway course or flood controls such as with levees, and larger environmental issues such as climate change and sea level rise.
