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Dust Devils
A dust devil is a strong, well-formed, and relatively short-lived whirlwind. Its size ranges from small (half a metre wide and a few metres tall) to large (more than 10 m wide and more than 1 km tall). The primary vertical motion is upward. Dust devils are usually harmless, but can on rare occasions grow large enough to pose a threat to both people and property. They are comparable to tornadoes in that both are a weather phenomenon involving a vertically oriented rotating column of wind. Most tornadoes are associated with a larger parent circulation, the mesocyclone on the back of a supercell thunderstorm. Dust devils form as a swirling updraft under sunny conditions during fair weather, rarely coming close to the intensity of a tornado. Formation Dust devils form when a pocket of hot air near the surface rises quickly through cooler air above it, forming an updraft. If conditions are just right, the updraft may begin to rotate. As the air rapidly rises, the colum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arizona
Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Four Corners region with Utah to the north, Colorado to the northeast, and New Mexico to the east; its other neighboring states are Nevada to the northwest, California to the west and the Mexican states of Sonora and Baja California to the south and southwest. Arizona is the 48th state and last of the contiguous states to be admitted to the Union, achieving statehood on February 14, 1912. Historically part of the territory of in New Spain, it became part of independent Mexico in 1821. After being defeated in the Mexican–American War, Mexico ceded much of this territory to the United States in 1848. The southernmost portion of the state was acquired in 1853 through the Gadsden Purchase. Southern Arizona is known for its desert cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anticyclonic Rotation
Anticyclonic rotation, or anticyclonic circulation, is atmospheric motion in the direction opposite to a planet's rotation. For Earth, this motion is in a clockwise direction in the Northern Hemisphere and counterclockwise in the Southern Hemisphere. For large-scale weather systems, greater than approximately , anticyclonic rotation only occurs for high-pressure systems. This is due to how the Coriolis effect acts on high-pressure systems. Large, low-pressure systems, such as tropical cyclones, have cyclonic rotation. Small scale rotating atmospheric features, such as tornadoes, water spouts, and dust devil A dust devil is a strong, well-formed, and relatively short-lived whirlwind. Its size ranges from small (half a metre wide and a few metres tall) to large (more than 10 m wide and more than 1 km tall). The primary vertical motion is ...s can have either anticyclonic or cyclonic rotation, since the direction of their spin depends on local forces rather th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Toilet
A chemical toilet collects human excreta in a holding tank and uses chemicals to minimize odors. They do not require a connection to a water supply and are used in a variety of situations. These toilets are usually, but not always, self-contained and movable. A chemical toilet is structured around a relatively small tank, which needs to be emptied frequently. It is not connected to a hole in the ground (like a pit latrine), nor to a septic tank, nor is it plumbed into a municipal system leading to a sewage treatment plant. When the tank is emptied, the contents are usually pumped into a sanitary sewer or directly to a treatment plant. The portable toilets used on construction sites and at large gatherings such as music festivals are well-known types of chemical toilet. As they are usually used for short periods and because of their high prices, they are mostly rented rather than bought, often including servicing and cleaning. A simpler type of chemical toilet may be used in tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commerce City, Colorado
The City of Commerce City is a home rule municipality located in Adams County, Colorado, United States. The city population was 62,418 at the 2020 United States Census, a 35.95% increase since the 2010 United States Census. Commerce City is the 18th most populous municipality in Colorado. Commerce City is located north of Denver and is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area and the Front Range Urban Corridor. Commerce City is a mixed residential and industrial community that is known for an oil refinery with a capacity of , operated by Suncor. Dick's Sporting Goods Park, a soccer stadium in Commerce City, hosts the Colorado Rapids of Major League Soccer. History In 1859 after fighting in Bleeding Kansas, John D. "Colonel Jack" Henderson built a ranch, trading post, and hotel on Henderson Island in the South Platte River in Arapahoe County, Kansas Territory north of Denver, from which he sold meat and provisions to gold seekers o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fort Bliss
Fort Bliss is a United States Army post in New Mexico and Texas, with its headquarters in El Paso, Texas. Named in honor of William Wallace Smith Bliss, LTC William Bliss (1815–1853), a mathematics professor who was the son-in-law of President Zachary Taylor, Ft. Bliss has an area of about ; it is the largest installation in FORSCOM (United States Army Forces Command) and second-largest in the Army overall (the largest being the adjacent White Sands Missile Range). The portion of the post located in El Paso County, Texas, is a census-designated place with a population of 8,591 as of the time of the United States Census, 2010, 2010 census. Fort Bliss provides the largest contiguous tract () of restricted airspace in the Continental United States, used for missile and artillery training and testing, and at 992,000 acres boasts the largest maneuver area (ahead of the Fort Irwin National Training Center, National Training Center, which has 642,000 acres). The garrison's land area i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Air Force
The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Signal Corps, the USAF was established as a separate branch of the United States Armed Forces in 1947 with the enactment of the National Security Act of 1947. It is the second youngest branch of the United States Armed Forces and the fourth in order of precedence. The United States Air Force articulates its core missions as air supremacy, global integrated intelligence, surveillance and reconnaissance, rapid global mobility, global strike, and command and control. The United States Air Force is a military service branch organized within the Department of the Air Force, one of the three military departments of the Department of Defense. The Air Force through the Department of the Air Force is headed by the civilian Secretary of the Ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inflatable Castle
Inflatable castles (also called closed inflatable trampolines (CITs), bouncing castles, bouncy houses, bounce houses, jumping castles, jumpers, bouncy castles, moon bounces, or moonwalks) are temporary inflatable structures and buildings and similar items that are rented for functions, school and church festivals and village fetes and used for recreational purposes, particularly for children. The growth in the use of such devices has led to a rental industry that includes inflatable slides, obstacle courses, and games. Inflatables are ideal for portable amusements because they are easy to transport and store. Inflatables have been marketed under several names, such as "Bounce House", "Bouncies", "Moon Bounce", "Boingalow", "Astrojump", "Moonwalk", "Jolly Jump", and "Spacewalk". Inflatable castles have been suggested as having some therapeutic value for children with certain sensory impairments, similar to ball pits. History American engineer John Scurlock is credited as inven ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
El Paso, Texas
El Paso (; "the pass") is a city in and the seat of El Paso County in the western corner of the U.S. state of Texas. The 2020 population of the city from the U.S. Census Bureau was 678,815, making it the 23rd-largest city in the U.S., the sixth-largest city in Texas, and the second-largest city in the Southwestern United States behind Phoenix, Arizona. The city is also the second-largest majority-Hispanic city in the U.S., with 81% of its population being Hispanic. Its metropolitan statistical area covers all of El Paso and Hudspeth counties in Texas, and had a population of 868,859 in 2020. El Paso has consistently been ranked as one of the safest large cities in America. El Paso stands on the Rio Grande across the Mexico–United States border from Ciudad Juárez, the most-populous city in the Mexican state of Chihuahua with over 1.5 million people. The Las Cruces area, in the neighboring U.S. state of New Mexico, has a population of 219,561. On the U.S. side, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Casper, Wyoming
Casper is a city in, and the county seat of, Natrona County, Wyoming, United States. Casper is the second-largest city in the state, with the population at 59,038 as of the 2020 United States census, 2020 census. Only Cheyenne, Wyoming, Cheyenne, the state capital, is larger. Casper is nicknamed "The Oil City" and has a long history of oil boomtown and cowboy culture, dating back to the development of the nearby Salt Creek Oil Field. Casper is located in east central Wyoming. History The city was established east of the former site of Fort Caspar, which was built during the mid-19th century mass migration of land seekers along the Oregon Trail, Oregon, California Trail, California and Mormon Trail, Mormon trails. The area was the location of several ferries that offered passage across the North Platte River in the early 1840s. In 1859, Louis Guinard built a bridge and trading post near the original ferry locations. The government soon posted a military garrison nearby to protec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Climatic Data Center
The United States National Climatic Data Center (NCDC), previously known as the National Weather Records Center (NWRC), in Asheville, North Carolina, was the world's largest active archive of weather data. Starting as a tabulation unit in New Orleans, Louisiana in 1934, the climate records were transferred to Asheville in 1951, becoming named the National Weather Records Center (NWRC). It was later renamed the National Climatic Data Center, with relocation occurring in 1993. In 2015, it was merged with the National Geophysical Data Center (NGDC) and the National Oceanic Data Center (NODC) into the National Centers for Environmental Information (NCEI). History In 1934, a tabulation unit was established in New Orleans, Louisiana to process past weather records. Climate records and upper air observations were punched onto cards in 1936. This organization was transferred to Asheville, North Carolina in 1951, where the National Weather Records Center (NWRC) was established. It w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lebanon, Maine
Lebanon is a town in York County, Maine, United States. The population was 6,469 at the 2020 census. Lebanon includes the villages of Center Lebanon, West Lebanon, North Lebanon, South Lebanon and East Lebanon. It is the westernmost town in Maine. Lebanon is part of the Portland– South Portland–Biddeford, Maine metropolitan statistical area. Lebanon Airport is home to Skydive New England. History It was called Towwoh by the Newichawannock Abenaki tribe, whose main village was further down the Salmon Falls River. On April 20, 1733, the Massachusetts General Court granted Towwoh Plantation to 60 colonists, who first settled it in 1743. The township was incorporated on June 17, 1767, renamed Lebanon after the biblical land of Lebanon. It was Maine's 23rd town. Lebanon annexed unincorporated land in 1785, and some from Sanford in 1787. It swapped land with Shapleigh, giving some in 1793, then annexing some in 1825. Farmers found the surface of the town relatively leve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enhanced Fujita Scale
The Enhanced Fujita scale (abbreviated as EF-Scale) rates tornado intensity based on the severity of the damage they cause. It is used in some countries, including the United States, Canada, China, and Mongolia. The Enhanced Fujita scale replaced the decommissioned Fujita scale that was introduced in 1971 by Ted Fujita. Operational use began in the United States on February 1, 2007, followed by Canada on April 1, 2013. It has also been proposed for use in France. The scale has the same basic design as the original Fujita scale—six intensity categories from zero to five, representing increasing degrees of damage. It was revised to reflect better examinations of tornado damage surveys, in order to align wind speeds more closely with associated storm damage. Better standardizing and elucidating what was previously subjective and ambiguous, it also adds more types of structures and vegetation, expands degrees of damage, and better accounts for variables such as differences in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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