Crm Comuncation Essays - Storm, Tornado, Wind, Supercell

Crm Comuncation Essays - Storm, Tornado, Wind, Supercell Crm Comuncation In dealing with weather there are many types which can seriously cause damage to people and communities. Especially in the aviation we as pilot have to take into account many consideration in preparing for a flight. For instance, thunderstorms, icing levels, winds aloft, and visibility all play major factors in preparing for a flight. But there are some weather phenomena that can be extremely dangerous to fly into. Hurricanes, wind shear, and tornadoes are just some of the major threatening systems that can cause serious damage to people and places. One of the most interesting systems is the tornado. So what is a tornado? A tornado is a violently rotating column of air, which is found below cumulonimbus clouds and is nature's most violent wind. A tornado is officially defined as an intense, rotating column of air extending from the base of a thunderstorm cloud to the ground. Wind speeds in tornadoes can vary from 72 to almost 300 mph. Fortunately, only 2 percent of all tornadoes have winds greater than 200 mph. When a tornado is seen and has not yet made contact to the surface this is what is called a funnel cloud. When a funnel cloud touches the ground, it becomes a tornado (Jack Williams, USA TODAY Information Network). Most tornado's range from 300 to 2,000 feet in diameters, but have been reported to extremes of one mile. Tornado's usually travel in a southwest to northeast direction at about 30 knots in the U.S. According to Peter F. Lester tornado's lifetime average only for a few minutes, but have been documented to last over three hours. In the United States there is one particular place that seems to be more prominent to have tornado's form. The American Meteorology Society's Glossary of Weather and Climate defines Tornado Alley as: The area of the United States in which tornadoes are most frequent. It encompasses the great lowland areas of the Mississippi, the Ohio, and lower Missouri River Valleys. According to USA today Depending on the time of year, the southern and northern borders of tornado alley extend from about central Texas to Nebraska and Iowa. This region is where tornadoes spin up most frequently and where most monster, mile-wide twisters roam. The question is why is this area so prime for tornado's to form? Thunderstorms thrive on lots of warm, humid air. And the rotating thunderstorms, called supercells, which spawn the biggest tornadoes, need low-level winds that shift direction and grow stronger just above the ground (USA weather). The Gulf of Mexico provides an abundance of tropical moisture blowi ng into the Plains on south and southeast winds. Meanwhile the higher and drier elevations of the Rockies allow a hot, dry layer of air to blow over the region from the southwest. (USA TODAY Chris Cappella USA weathers source). It's the unique combination of atmospheric parameters a large moisture supply, low-level wind shear, a drying and cooling middle atmosphere, and features such as the dryline and a convective cap that turn the Great Plains into a tornado alley. The conditions responsible for the cause of tornado's are basically wind from the west and moister that comes from the Gulf of Mexico. The clash of warm and cold air helps supply the humidity and energy needed. Winds from different directions high above the ground help supply more energy and also give the air the turning motion needed for tornadoes. The center of the tornado's vortex is a low-pressure area. As air rushes into the vortex, its pressure lowers, which cools the air. Cooling condenses water vapor in the air into the tornado's familiar funnel-shaped cloud. Although the air is rising in a tornado, the funnel itself grows from the cloud toward the ground as the tornado is forming. Tornadoes form in the air rising into a thunderstorm, in the updraft. The strongest tornadoes are often near the edge of the updraft, not far from where air is descending from the thunderstorms. (Jack Williams, USA TODAY Information Network). Some times tornado's can be mistaken for microburst. The difference between microburst and tornado's is that Air moves very rapidly upward around a tornado center. This distinguishes tornadoes from microburst, which often do tornado-like damage

Themis the Goddess of Justice

Themis the Goddess of Justice Justice is blind. Themis, in Greek mythology, was the personification of divine or natural law, order, and justice. Her name means justice. She was worshipped as a goddess in Athens. Themis was also credited with wisdom and foresight or prophecy (her sons name, Prometheus, means foresight), and with knowing secrets unknown even to Zeus. She was also known as a protector of the oppressed and a protector of hospitality. Law and Order? The law and order which Themis protected was in the sense of natural order or law, what was proper especially related to family or the community. Such customs were perceived as natural in origin, though would today be seen as cultural or social constructs. In Greek, themis referred to divine or natural law, while nomoi to laws created by people and communities. Images of Themis: Themis was depicted as a beautiful woman, sometimes blind with a bandage over her eyes, and holding a pair of scales in one hand, a sword or cornucopia in the other. A similar image was used for the Roman goddess Iustitia (Justitia or Lady Justice). The images of Themis or Lady Justice blindfolded is more common by the 16th century C.E.; seen as gifted with prophecy, thered be no need for her to be blindfolded. Nemesis and Themis shared a temple at Rhamnous. The idea was that when Themis (divine or natural law) was ignored, then Nemesis would go into action, as the goddess of retribution against those who committed hubris (arrogance) in rejecting divine law and order. Parentage of Themis: Themis was one of the Titans, a daughter of Uranus (the heavens) and Gaia (the earth). Offspring of Themis: Themis was a consort or wife of Zeus after Metis. Their offspring were the Fates (Moirai or Moerae or Parcae) and the Hours (Horae) or Seasons. Some myths also identify as their offspring Astraea (another personification of justice), nymphs of the Eridanus River, and the Hesperides. By her Titan husband Iapetus, Themis was said to be the mother of Prometheus (foresight), and she gave him the knowledge that helped him to escape the punishment of Zeus. (In some myths, the mother of Prometheus was Clymene.) Dike, another goddess of justice, said to be one of the daughters of Themis, in early Greek depictions would carry out the decisions of the Fates, decisions which were above the influence even of the gods. Themis and Delphi Themis followed her mother Gaia in occupying the Oracle at Delphi. Some say that Themis originated the Oracle. Themis eventually turned over the Delphic office some say to her sister Phoebe, others say to Apollo. Themis and the First Humans In Ovids telling, Themis helped Deucalion and Pyrrha, the first human beings, learn how to re-populate the earth after the great worldwide flood. Apples of the Hesperides In the story of Perseus, Atlas refused to help Perseus because Themis had warned Atlas that Zeus would try to steal the golden apples of the Hesperides.