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Jet Stream
Jet streams are fast flowing, narrow thermal wind, air currents in the Earth's Atmosphere of Earth, atmosphere. The main jet streams are located near the altitude of the tropopause and are westerly winds, flowing west to east around the globe. The northern hemisphere and the southern hemisphere each have a polar jet around their respective polar vortex at around above sea level and typically travelling at around although often considerably faster. Closer to the equator and somewhat higher and somewhat weaker is a subtropical jet. The northern polar jet flows over the middle to northern latitudes of North America, Europe, and Asia and their intervening oceans, while the southern hemisphere polar jet mostly circles Antarctica. Jet streams may start, stop, split into two or more parts, combine into one stream, or flow in various directions including opposite to the direction of the remainder of the jet. The El Niño–Southern Oscillation affects the location of the jet s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerial Superhighway
Aerial may refer to: Music *Aerial (album), ''Aerial'' (album), by Kate Bush, and that album's title track *Aerials (song), "Aerials" (song), from the album ''Toxicity'' by System of a Down Bands *Aerial (Canadian band) *Aerial (Scottish band) *Aerial (Swedish band) Recreation and sport *Aerial (dance move) *Aerial (skateboarding) *Front aerial, gymnastics move performed in acro dance * Aerial cartwheel * Aerial silk, a form of acrobatics * Aerial skiing Technology *Aerial (radio), a radio ''antenna'' or transducer that transmits or receives electromagnetic waves **Aerial (television), an over-the-air television reception antenna *Aerial photography Other uses *Aerial, Georgia, a community in the United States *Aerial (magazine), ''Aerial'' (magazine), a poetry magazine *Aerials (film), ''Aerials'' (film), a 2016 Emirati science-fiction film *''Aerial'', a BBC Two '1991–2001' idents, TV ident for BBC Two from 1997 to 2001 See also * Arial * Ariel (disambiguat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
African Easterly Jet
The African easterly jet is a region of the lower troposphere over West Africa where the seasonal mean wind speed is at a maximum and the wind is easterly. The temperature contrast between the Sahara Desert and the Gulf of Guinea causes the jet to form to the north of the monsoon trough. The jet's maximum wind speeds are at a height of . The jet moves northward from its south-most location in January, reaching its most northerly latitude in August. Its strongest winds are in September while it begins shifting back towards the equator. Within the easterly jet, tropical waves form. Convective complexes associated with these waves can form tropical cyclones. If the jet is south of its normal location during August and September, tropical cyclogenesis is suppressed. If desertification continues across Sub-Saharan Africa, the strength of the jet could increase, although tropical wave generation probably would decrease, which would decrease the number of tropical cyclones in the Atla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinrich Seilkopf
Heinrich (Andreas Karl) Seilkopf (December 25, 1895 in Frankfurt (Oder) – June 27, 1968 in Hamburg) was a German meteorologist. From March 1916 to March 1919 he was a research assistant at the weather office in Berlin and until the end of the year scientific assistant at the Meteorological Observatory in Essen. From 1920 to March 1946 he was a meteorologist at the German Naval Observatory. In 1927 was a lecturer and fellow at the meteorological observatory Hannover. After a short time as head of the meteorological observatory Hannover, he established the department of ocean air-German Naval Observatory. From March 1930 he was at the Meteorological Observatory Hamburg. In June 1931 he was a.o. Professor at the Technical University of Hannover, since 1940 also lecturer at the University of Hamburg for ''Seeflugmeteorologie''. In 1939 he had rediscovered the jet stream that Wasaburo Oishi had originally discovered in 1920's but was largely ignored because this paper was publ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wiley Post
Wiley Hardeman Post (November 22, 1898 – August 15, 1935) was an American aviator during the Aviation between the World Wars, interwar period and the first aviator, pilot to fly solo around the world. Known for his work in high-altitude flying, he helped develop one of the first pressure suits and discovered the jet stream. On August 15, 1935, he and American humorist Will Rogers were killed when his aircraft Rogers-Post Site, crashed on takeoff from a lagoon near Point Barrow in the Territory of Alaska. Post's modified Lockheed Vega aircraft, the ''Winnie Mae'', was on display at the National Air and Space Museum's Steven F. Udvar-Hazy Center from 2003 to 2011. It is now featured in the "Time and Navigation" gallery on the second floor of the National Air and Space Museum in Washington, D.C. Early life Post was born to parents who cultivated cotton on a farm near Grand Saline, Texas. His father was William Francis and his mother was Mae Quinlan Post, a person of mixed Chero ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Esperanto
Esperanto (, ) is the world's most widely spoken Constructed language, constructed international auxiliary language. Created by L. L. Zamenhof in 1887 to be 'the International Language' (), it is intended to be a universal second language for international communication. He described the language in ''Dr. Esperanto's International Language'' (), which he published under the pseudonym . Early adopters of the language liked the name and soon used it to describe his language. The word translates into English as 'one who hopes'. Within the range of constructed languages, Esperanto occupies a middle ground between "naturalistic" (imitating existing natural languages) and ''Constructed language#A priori and a posteriori languages, a priori'' (where features are not based on existing languages). Esperanto's vocabulary, syntax and semantics derive predominantly from languages of the Indo-European languages, Indo-European group. A substantial majority of its vocabulary (approximat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilot Balloon
A ceiling balloon also called a pilot balloon or pibal, is used by meteorologists to determine the height of the base of clouds above ground level during daylight hours. In the past, and sometimes today, a theodolite was used to track the balloon in order to determine the speed and direction of winds aloft. The principle behind the ceiling balloon is that timing of a balloon with a known ascent rate (how fast it climbs) from its release until it disappears into the clouds can be used to calculate the height of the bottom of the clouds. How it is used A ceiling balloon is a small, usually red, (fluted) rubber balloon commonly measuring 76 mm (3 in) across prior to inflation, inflated to ~40 cm (~15.75 in) diameter. After inflation the balloon is taken outside and released. By timing the balloon from release until it enters the cloud a ceiling height can be obtained. When correctly inflated the balloon will rise at rate of 140 m/min (460 ft/min). The bases o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Fuji
is an active stratovolcano located on the Japanese island of Honshu, with a summit elevation of . It is the highest mountain in Japan, the second-highest volcano on any Asian island (after Mount Kerinci on the Indonesian island of Sumatra), and List of islands by highest point, seventh-highest peak of an island on Earth. Mount Fuji Hōei eruption, last erupted from 1707 to 1708. It is located about southwest of Tokyo, from where it is visible on clear days. Its exceptionally symmetrical cone, which is snow field, covered in snow for about five months of the year, is a Japanese cultural icon and is frequently depicted in art and photography, as well as visited by sightseers, hikers and mountain climbers. Mount Fuji is one of Japan's along with Mount Tate and Mount Haku. It is a List of Special Places of Scenic Beauty, Special Historic Sites and Special Natural Monuments, Special Place of Scenic Beauty and one of Japan's Monuments of Japan, Historic Sites. It was added to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wasaburo Oishi
was a Japanese meteorologist. Born in Tosu, Saga, he is best known for his discovery of the high-altitude air currents now known as the jet stream. He was also an important Esperantist, serving as the second board president of the Japanese Esperanto Institute from 1930 to 1945. Jet stream and Esperanto He wrote the first official report from Japan's Aerological Observatory (written in 1926 and in the auxiliary language of Esperanto). In this report (''Raporto de Aerologia Observatorio de Tateno)'' data was stratified by season and used to produce the mean seasonal wind profiles. The profile for winter gave the first known evidence of the persistent strong westerlies over Japan that would later become known as the jet stream. In an attempt to reach an unresponsive foreign audience, Wasaburo Oishi published nineteen reports between 1926 and 1944, all of them written in Esperanto, in total 1246 pages. Wasaburo Ooishi was not only the director of Japan's Tateno atmospheric observato ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quasi-biennial Oscillation
The quasi-biennial oscillation (QBO) is a quasiperiodic oscillation of the equatorial zonal wind between easterlies and westerlies in the tropical stratosphere with a mean period of 28 to 29 months. The alternating wind regimes develop at the top of the lower stratosphere and propagate downwards at about per month until they are dissipated at the tropopause. Downward motion of the easterlies is usually more irregular than that of the westerlies. The amplitude of the easterly phase is about twice as strong as that of the westerly phase. At the top of the vertical QBO domain, easterlies dominate, while at the bottom, westerlies are more likely to be found. At the level, with regards to monthly mean zonal winds, the strongest recorded easterly was 29.55 m/s in November 2005, while the strongest recorded westerly was only 15.62 m/s in June 1995. Theory In 1883, the eruption of Krakatoa led to visual tracking of subsequent volcanic ash in the stratosphere. This visua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The New York Times
''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of the longest-running newspapers in the United States, the ''Times'' serves as one of the country's Newspaper of record, newspapers of record. , ''The New York Times'' had 9.13 million total and 8.83 million online subscribers, both by significant margins the List of newspapers in the United States, highest numbers for any newspaper in the United States; the total also included 296,330 print subscribers, making the ''Times'' the second-largest newspaper by print circulation in the United States, following ''The Wall Street Journal'', also based in New York City. ''The New York Times'' is published by the New York Times Company; since 1896, the company has been chaired by the Ochs-Sulzberger family, whose current chairman and the paper's publ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1883 Eruption Of Krakatoa
Beginning on 20 May 1883, and ending on 21 October 1883, the volcanic island of Krakatoa, located in the Sunda Strait, had repeated, months long Types of volcanic eruptions, volcanic eruptions. The most destructive of these eruptions occurred on 27 August, when over 70% of the island and its Krakatoa archipelago, surrounding archipelago were destroyed when it erupted so violently it collapsed itself into a caldera. The August eruption had an estimated Volcanic explosivity index, Volcanic Explosivity Index (VEI) of 6, and is List of volcanic eruptions by death toll, one of the deadliest and most destructive volcanic events in recorded history. The explosion was heard away in Perth, Western Australia, and Rodrigues near Mauritius, away. The acoustic pressure wave circled the globe more than three times. At least 36,417 deaths are attributed to the eruption and the tsunamis it created. Significant additional effects were felt worldwide in the days and weeks after the volcano's e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elias Loomis
Elias Loomis (August 7, 1811 – August 15, 1889) was an American mathematician. He served as a professor of mathematics and natural philosophy at Case Western Reserve University, Western Reserve College (now Case Western Reserve University), the New York University, University of the City of New York and Yale University. During his tenure at Western Reserve College in 1838, he established the Loomis Observatory, currently the second oldest observatory in the United States. Life and work Loomis was born in Willington, Connecticut in 1811. He graduated at Yale College in 1830, was a tutor there for three years (1833–36), and then spent the next year in scientific investigation in Paris. On his return, Loomis served as professor of mathematics and natural philosophy for eight years (1836–44) at Case Western Reserve University, Western Reserve College in Hudson, Ohio, Hudson, Ohio, now Case Western Reserve University. During his tenure, he opened up the Loomis Observatory i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
