Haze is traditionally an atmospheric phenomenon where dust, smoke and other dry particles obscure the clarity of the sky. The World Meteorological Organization manual of codes includes a classification of horizontal obscuration into categories of fog, ice fog, steam fog, mist, haze, smoke, volcanic ash, dust, sand and snow.[1] Sources for haze particles include farming (ploughing in dry weather), traffic, industry, and wildfires.
Seen from afar (e.g. approaching airplane) and depending upon the direction of view with respect to the sun, haze may appear brownish or bluish, while mist tends to be bluish-grey. Whereas haze often is thought of as a phenomenon of dry air, mist formation is a phenomenon of humid air. However, haze particles may act as condensation nuclei for the subsequent formation of mist droplets; such forms of haze are known as "wet haze."
In the United States and elsewhere, the term "haze" in meteorological literature generally is used to denote visibility-reducing aerosols of the wet type. Such aerosols commonly arise from complex chemical reactions that occur as sulfur dioxide gases emitted during combustion are converted into small droplets of sulfuric acid. The reactions are enhanced in the presence of sunlight, high relative humidity, and stagnant air flow. A small component of wet haze aerosols appear to be derived from compounds released by trees, such as terpenes. For all these reasons, wet haze tends to be primarily a warm-season phenomenon. Large areas of haze covering many thousands of kilometers may be produced under favorable conditions each summer.
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Air pollution [link]
Haze often occurs when dust and smoke particles accumulate in relatively dry air. When weather conditions block the dispersal of smoke and other pollutants they concentrate and form a usually low-hanging shroud that impairs visibility and may become a respiratory health threat. Industrial pollution can result in dense haze, which is known as smog.
Since 1991, haze has been a particularly acute problem in Southeast Asia, Indonesian forest fires burnt to clear land being the reason. In response the 1997 Southeast Asian haze, the ASEAN countries agreed on a Regional Haze Action Plan (1997) and later signed the Agreement on Transboundary Haze Pollution (2002) however the pollution is still a problem today. Under the agreement the ASEAN secretariat hosts a co-ordination and support unit.[2]
In the United States, the Interagency Monitoring of Protected Visual Environments (IMPROVE) program was developed as a collaborative effort between the US EPA and the National Park Service in order to establish the chemical composition of haze in National Parks and establish air pollution control measures in order to restore the visibility to pre-industrial levels.[3] Additionally, the Clean Air Act requires that any current visibility problems be remedied, and future visibility problems be prevented, in 156 Class I Federal areas located throughout the United States. A full list of these areas is available on EPA's website.[4]
Obscuration [link]
Haze causes issues in the area of terrestrial photography, where the penetration of large amounts of dense atmosphere may be necessary to image distant subjects. This results in the visual effect of a loss of contrast in the subject, due to the effect of light scattering through the haze particles. For these reasons, sunrise and sunset colors appear subdued on hazy days, and stars may be obscured at night. In some cases, attenuation by haze is so great that, toward sunset, the sun disappears altogether before reaching the horizon. (see example).[5] Haze can be defined as an aerial form of the Tyndall effect therefore unlike other atmospheric effects such as cloud and fog, haze is spectrally selective: shorter (blue) wavelengths are scattered more, and longer (red/infrared) wavelengths are scattered less. For this reason many super-telephoto lenses often incorporate yellow filters or coatings to enhance image contrast.
Infrared (IR) imaging may also be used to penetrate haze over long distances, with a combination of IR-pass optical filters (such as the Wratten 89B) and IR-sensitive detector.
See also [link]
Notes [link]
- ^ WMO Manual on Codes
- ^ ASEAN action hazeonline
- ^ IMPROVE Visibility Program
- ^ Federal Class 1 Areas
- ^ Figure 1. "The setting sun dimmed by dense haze over State College, Pennsylvania on 16 September 1992". "Haze over the Central and Eastern United States". The National Weather Digest. March 1996. https://www.spc.noaa.gov/publications/corfidi/haze.html.
External links [link]
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Wikimedia Commons has media related to: Haze |
- National Pollutant Inventory - Particulate matter fact sheet
- Haze over the central and eastern United States
- Chemical Composition of Haze in US Natioanl Parks: Views Visibility Database
https://wn.com/Haze
Haze (disambiguation)
Haze may refer to:
Haze may also refer to:
In films
In gaming
In music
In literature
Harikrish Menon
Singer/songwriter HAZE (b. Harikrish Menon Ramachandran 2 June 1973, Kuala Lumpur, Malaysia) is known for his work in the dance music genre, with hit singles such as Changes and Freak.
Career
He began his professional career at R.A.P. (Roslan Aziz Production) a Malaysian record label owned by acclaimed music producer Roslan Aziz. He has since worked with many of Malaysia's top performing artist such as Sheila Majid, Ning Baizura, Amir Yusoff, Zainal Abidin, Sarifah Aini and Malaysian rap sensation Too Phat just to name a few. Besides producing for local Malaysian performing artist, he has also produced albums for many performing artist around the region. Artist such as Kris Dayanti of Indonesia and Singaporean rap sensation Haikel. Which has allowed him to develop a musical scope that covers across almost all genres. In the Mid 1990's he also performed with the band Asia Beat.
He was the first Malaysian to appear on the BBC UK Dance Singles Charts, for Changes. His single Freak made the Top 10 of the National Top 100 Singles chart in the Netherlands.
Neon
Neon is a chemical element with symbol Ne and atomic number 10. It is in group 18 (noble gases) of the periodic table. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. It was discovered (along with krypton and xenon) in 1898 as one of the three residual rare inert elements remaining in dry air, after nitrogen, oxygen, argon and carbon dioxide were removed. Neon was the second of these three rare gases to be discovered, and was immediately recognized as a new element from its bright red emission spectrum. The name neon is derived from the Greek word, νέον, neuter singular form of νέος [neos], meaning new. Neon is chemically inert and forms no uncharged chemical compounds.
During cosmic nucleogenesis of the elements, large amounts of neon are built up from the alpha-capture fusion process in stars. Although neon is a very common element in the universe and solar system (it is fifth in cosmic abundance after hydrogen, helium, oxygen and carbon), it is very rare on Earth. It composes about 18.2 ppm of air by volume (this is about the same as the molecular or mole fraction), and a smaller fraction in Earth's crust. The reason for neon's relative scarcity on Earth and the inner (terrestrial) planets is that neon forms no compounds to fix it to solids and is highly volatile. This led to its escaping from the planetesimals under the warmth of the newly ignited Sun in the early Solar System. Even the atmosphere of Jupiter is somewhat depleted of neon, presumably for this reason. It is also lighter than air, which has further depleted it from Earth's atmosphere.
Neon (Chris Young song)
"Neon" is a song recorded by American country music artist Chris Young. It was released in March 2012 as the third single and title track from his album Neon (2011). The song was written by Shane McAnally, Josh Osborne and Trevor Rosen. "Neon" received positive reviews from critics who praised the production, lyrics and Young's vocal performance. It stopped Young's five consecutive number-one hit run on the US Hot Country Songs chart, peaking at number 23. It also peaked at number 92 on the Billboard Hot 100.
Critical reception
Billy Dukes of Taste of Country gave the song four stars out of five, writing that Young "plays with notes high and low like a cat plays with a ball of yarn, sort of batting them back and forth, always in control." Tara Seetharam of Country Universe gave the song an A- grade, saying that Young's voice "sinks into the groove of the song so effortlessly you’d think he was singing in his sleep, skating around the melody with an appropriate blend of conviction and restraint." Jonathan Keefe of Slant Magazine, reviewing the album, called it a strong track that uses "creative imagery to explain the seductive draw of a bar."
Neon (magazine)
Neon was a British film magazine published monthly by Emap Consumer Media from December 1996 to February 1999. It attempted to be a refreshing alternative to other UK film magazines such as Empire.
History and profile
Started in 1996, Neon included latest film news, previews, actor profiles, interviews and contemporary movie profiles all written with a characteristic sense of humor. Each issue featured A Monthly Selection of Ten Favourite Things with a celebrity listing a particular category for their ten favorite films, for example, James Ellroy in the July 1998 issue picked his ten favorite crime movies.
What's your favourite Chevy Chase movie? featured the magazine asking various celebrities from the Beastie Boys to Pamela Anderson and Tommy Lee their favorite Chase film.
100 Scenes From... was an irreverent Top 100 list that parodied the notion of such lists.
Blow Up was a 12-page insert included in the middle of every issue that featured stills, promotional pictures of posters of movies and movie stars.
UB40 (album)
UB40 is the eighth album by British reggae band UB40, released on the DEP International label in 1988. This album contained the hit single "Breakfast in Bed" with Chrissie Hynde, which reached No. 6 in the UK charts.
Track listing
Cover versions
In 1989, "Where Did I Go Wrong" was covered on Bosnian language by Dino Merlin's former Bosnian group Merlin, with lyrics "Mjesečina", from their fourth studio album Nešto lijepo treba da se desi.
References
Podcasts:
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by UB40
Neon Haze
by: UB40[Instrumental]