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NEXRAD
NEXRAD or Nexrad (Next-Generation Radar) is a network of 159 high-resolution S-band pulse-Doppler radar, Doppler weather radars operated by the National Weather Service (NWS), an agency of the National Oceanic and Atmospheric Administration (NOAA) within the United States Department of Commerce, the Federal Aviation Administration (FAA) within the United States Department of Transportation, Department of Transportation, and the United States Air Force, U.S. Air Force within the United States Department of Defense, Department of Defense. Its technical name is WSR-88D (''Weather Surveillance Radar, 1988, Doppler''). NEXRAD detects precipitation (meteorology), precipitation and Earth's atmosphere, atmospheric movement or wind. It returns data which when processed can be displayed in a mosaic map which shows patterns of precipitation and its movement. The radar system operates in two basic modes, selectable by the operator – a slow-scanning ''clear-air mode'' for analyzing air moveme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fort Dix
Fort Dix, the common name for the Army Support Activity (ASA) located at Joint Base McGuire–Dix–Lakehurst, is a United States Army post. It is located south-southeast of Trenton, New Jersey. Fort Dix is under the jurisdiction of the Air Force Air Mobility Command. As of the 2020 U.S. census, Fort Dix census-designated place (CDP) had a total population of 7,716,DP-1 - Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data for Fort Dix CDP, New Jersey , . Accessed 17 June 2013. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wind
Wind is the natural movement of atmosphere of Earth, air or other gases relative to a planetary surface, planet's surface. Winds occur on a range of scales, from thunderstorm flows lasting tens of minutes, to local breezes generated by heating of land surfaces and lasting a few hours, to global winds resulting from the difference in absorption (electromagnetic radiation), absorption of solar energy between the climate zones on Earth. The study of wind is called anemology. The two main causes of large-scale atmospheric circulation are the differential heating between the equator and the poles, and the rotation of the planet (Coriolis effect). Within the tropics and subtropics, thermal low circulations over terrain and high plateaus can drive monsoon circulations. In coastal areas the sea breeze/land breeze cycle can define local winds; in areas that have variable terrain, mountain and valley breezes can prevail. Winds are commonly classified by their scale (spatial), spatial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Presidency Of Ronald Reagan
Ronald Reagan's tenure as the 40th president of the United States began with his first inauguration on January 20, 1981, and ended on January 20, 1989. Reagan, a Republican from California, took office following his landslide victory over Democratic incumbent president Jimmy Carter and independent congressman John B. Anderson in the 1980 presidential election. Four years later in the 1984 presidential election, he defeated Democratic former vice president Walter Mondale to win re-election in a larger landslide. Reagan served two terms and was succeeded by his vice president, George H. W. Bush, who won the 1988 presidential election. Reagan's 1980 landslide election resulted from a dramatic conservative shift to the right in American politics, including a loss of confidence in liberal, New Deal, and Great Society programs and priorities that had dominated the national agenda since the 1930s. Domestically, the Reagan administration enacted a major tax cut, sought to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simon & Schuster
Simon & Schuster LLC (, ) is an American publishing house owned by Kohlberg Kravis Roberts since 2023. It was founded in New York City in 1924, by Richard L. Simon and M. Lincoln Schuster. Along with Penguin Random House, Hachette Book Group USA, Hachette, HarperCollins and Macmillan Publishers, Simon & Schuster is considered one of the Big Five (publishers), 'Big Five' English language publishers. , Simon & Schuster was the third largest publisher in the United States, publishing 2,000 titles annually under 35 different Imprint (trade name), imprints. History Early years In 1924, Richard L. Simon, Richard Simon's aunt, a crossword puzzle enthusiast, asked whether there was a book of ''New York World'' crossword puzzles, which were popular at the time. After discovering that none had been published, Simon and M. Lincoln Schuster, Max Schuster decided to launch a company to exploit the opportunity.Frederick Lewis Allen, ''Only Yesterday: An Informal History of the 1920s'', p. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Working Group
A working group is a group of experts working together to achieve specified goals. Such groups are domain-specific and focus on discussion or activity around a specific subject area. The term can sometimes refer to an interdisciplinary collaboration of researchers, often from more than one organization, working on new activities that would be difficult to sustain under traditional funding mechanisms (e.g., federal agencies). Working groups are variously also called task groups, workgroups, technical advisory groups, working parties, or task forces. The lifespan of a working group can last anywhere between a few months and several years. Such groups have the tendency to develop a ''quasi-permanent existence'' when the assigned task is accomplished; hence the need to disband (or phase out) the working group when it has achieved its goal(s). A working group's performance is made up of the individual results of all its individual members. A team's performance is made up of both i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thunderstorm
A thunderstorm, also known as an electrical storm or a lightning storm, is a storm characterized by the presence of lightning and its acoustics, acoustic effect on the Earth's atmosphere, known as thunder. Relatively weak thunderstorms are sometimes called thundershowers. Thunderstorms occur in cumulonimbus clouds. They are usually accompanied by strong winds and often produce Heavy rain (meteorology), heavy rain and sometimes Thundersnow, snow, Ice pellets, sleet, or hail, but some thunderstorms can produce little or Dry thunderstorm, no precipitation at all. Thunderstorms may thunderstorm training, line up in a series or become a rainband, known as a squall line. Strong or #Severe thunderstorms, severe thunderstorms include some of the most dangerous weather phenomena, including large hail, strong winds, and tornadoes. Some of the most persistent severe thunderstorms, known as supercells, rotate as do cyclones. While most thunderstorms move with the mean wind flow thr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Severe Storms Laboratory
The National Severe Storms Laboratory (NSSL) is a National Oceanic and Atmospheric Administration (NOAA) weather research laboratory under the Office of Oceanic and Atmospheric Research. It is one of seven NOAA Research Laboratories (RLs). NSSL studies weather radar, tornadoes, flash floods, lightning, damaging winds, hail, and winter weather out of Norman, Oklahoma, using various techniques and tools in their HWT, or Hazardous Weather Testbed. NSSL meteorologists developed the first doppler radar for the purpose of meteorological observation, and contributed to the development of the NEXRAD (WSR-88D). NSSL has a partnership with the Cooperative Institute for Severe and High-Impact Weather Research and Operations (CIWRO) at the University of Oklahoma that enables collaboration and participation by students and visiting scientists in performing research. The Lab also works closely with the Storm Prediction Center (SPC) and the National Weather Service Norman, Oklahoma, National ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doppler Effect
The Doppler effect (also Doppler shift) is the change in the frequency of a wave in relation to an observer who is moving relative to the source of the wave. The ''Doppler effect'' is named after the physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle sounding a horn approaches and recedes from an observer. Compared to the emitted frequency, the received frequency is higher during the approach, identical at the instant of passing by, and lower during the recession. When the source of the sound wave is moving towards the observer, each successive cycle of the wave is emitted from a position closer to the observer than the previous cycle. Hence, from the observer's perspective, the time between cycles is reduced, meaning the frequency is increased. Conversely, if the source of the sound wave is moving away from the observer, each cycle of the wave is emitted from a position farther from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WSR-74
WSR-74 radars were Weather Surveillance Radars designed in 1974 for the National Weather Service. They were added to the existing network of the WSR-57 model to improve forecasts and severe weather warnings. Some have been sold to other countries like Australia, Greece, and Pakistan. Radar properties There are two types in the WSR-74 series, which are almost identical except for operating frequency. The WSR-74C (used for local warnings) operates in the C band (IEEE), C band, and the WSR-74S (used in the national network) operates in the S band (like the WSR-57 and the current WSR-88D). S band frequencies are better suited because they are not attenuated significantly in heavy rain while the C Band is strongly attenuated, and has a generally shorter maximum effective range. The WSR-74C uses a wavelength of 5.4 cm.Paul Sirvatka. "WSR - Weather Surveillance Radar." Radar. College of DuPage. 4 Apr. 200 It also has a dish diameter of 8 feet, and a maximum range of 579 k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WSR-57
WSR-57 radars were the primary weather surveillance radar used by the United States for over 35 years. The National Weather Service operated a network of this model radar across the country, watching for severe weather. History The WSR-57 (Weather Surveillance Radar – 1957) was the first 'modern' weather radar. Initially commissioned at the Miami Hurricane Forecast Center, the WSR-57 was installed in other parts of the Contiguous United States (CONUS). The WSR-57 was the first generation of radars designed expressly for a national warning network. The WSR-57 was designed in 1957 by Dewey Soltow using World War II technology, using modified versions of those used by United States Navy aircraft. In accordance with the Joint Electronics Type Designation System, it was designated AN/FPS-41, as the 41st design of an Army-Navy fixed radar(pulsed) electronic device for searching. It provided only coarse reflectivity data and no velocity data, which made it extremely difficult to pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wea03317 - Flickr - NOAA Photo Library
The Wea were a Miami–Illinois-speaking Native American tribe originally located in western Indiana. Historically, they were described as being either closely related to the Miami tribe or a sub-tribe of Miami. Today, the descendants of the Wea, along with the Kaskaskia, Piankeshaw, and Peoria, are enrolled in the Peoria Tribe of Indians of Oklahoma, a federally recognized tribe in Oklahoma. Name The name ''Wea'' is used today as the a shortened version of their numerous recorded names. The Wea name for themselves (autonym) in their own language is ''waayaahtanwa'', derived from ''waayaahtanonki'', 'place of the whirlpool', where they were first recorded being seen and where they were living at that time. The many different spellings of the tribe's name include Waiatanwa, Ouaouiatanoukak, Aoiatenon, Aouciatenons, Ochiatenens, Ouatanons, Ouias, Ouiatanon, Wah-we-ah-tung-ong, Warraghtinooks, and Wyatanons. Language The Wea spoke a dialect of Miami–Illinois language, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Algorithm
In mathematics and computer science, an algorithm () is a finite sequence of Rigour#Mathematics, mathematically rigorous instructions, typically used to solve a class of specific Computational problem, problems or to perform a computation. Algorithms are used as specifications for performing calculations and data processing. More advanced algorithms can use Conditional (computer programming), conditionals to divert the code execution through various routes (referred to as automated decision-making) and deduce valid inferences (referred to as automated reasoning). In contrast, a Heuristic (computer science), heuristic is an approach to solving problems without well-defined correct or optimal results.David A. Grossman, Ophir Frieder, ''Information Retrieval: Algorithms and Heuristics'', 2nd edition, 2004, For example, although social media recommender systems are commonly called "algorithms", they actually rely on heuristics as there is no truly "correct" recommendation. As an e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
