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Haboob

A haboob (Arabic: هَبوب, romanizedhabūb, lit.'blasting/drifting') is a type of intense dust storm carried on an atmospheric gravity current, also known as a weather front. Haboobs occur regularly in dry land area regions throughout the world.

Haboob in Big Spring, Tx

Description

During thunderstorm formation, winds move in a direction opposite to the storm's travel, and they move from all directions into the thunderstorm. When the storm collapses and begins to release precipitation, wind directions reverse, gusting outward from the storm and generally gusting the strongest in the direction of the storm's travel.[1][2][3]

When this downdraft of cold air, or downburst, reaches the ground, it blows dry, loose silt and clay (collectively, dust) up from the desert, creating a wall of airborne sediment that precedes the storm cloud. This wall of dust can be up to 100 km (62 mi) wide and several kilometers in elevation. At their strongest, haboob winds often travel at 35–100 km/h (22–62 mph), and they may approach with little or no warning. Often rain does not appear at ground level as it evaporates in the hot, dry air (a phenomenon known as virga). The evaporation cools the rushing air even further and accelerates it. Occasionally, when the rain does persist, it can contain a considerable quantity of dust. Severe cases are called mud storms. Eye and respiratory system protection is advisable for anyone who must be outside during a haboob. Moving to shelter is highly advised during a strong event.

Occurrence

Middle East

Haboobs have been observed in the Sahara, Sahel (typically Sudan, where they were named and described), as well as across the Arabian Peninsula, throughout Kuwait, and in the most arid regions of Iraq.[4] Haboob winds in the Arabian Peninsula, Iraq, and Kuwait are frequently created by the collapse of a thunderstorm.

North Africa

 
Small boat in River Nile Sudan

African haboobs result from the northward summer shift of the Intertropical Convergence Zone into North Africa, bringing moisture from the Gulf of Guinea.

Australia

Haboobs in Australia may be frequently associated with cold fronts. The deserts of Central Australia, especially near Alice Springs, are particularly prone to haboobs, with sand and debris reaching several kilometers into the sky and leaving up to 30 centimetres (1 ft) of sand in the haboob's path.

North America

As with haboobs in the Middle East, haboob occurrences in North America are often created by the collapse of a thunderstorm. This is a local or mesoscale event, and at times of extreme drought they can originate in agricultural regions. Some of the most famous dust storms of the Dust Bowl and similar conditions later were in fact synoptic scale events typically generated by a strong cold frontal passage, with storms on 11 November 1911, 9–11 May 1934, 14 April 1935, and 19 February 1954 having been particularly vivid examples.

The arid and semiarid regions of North America—in fact, any dry region—may experience haboobs. In North America, the most common terms for these events are either dust storm or sandstorm. In the U.S., they frequently occur in the deserts of Arizona, including around the cities of Yuma and Phoenix;[5][6] in New Mexico, including Albuquerque, eastern California, and Texas.[7] They also sometimes occur in the Columbia Basin of Eastern Washington, almost always leading to an impact on the city of Spokane. If these storms are strong enough, they can reach as far east as Post Falls and Moscow, in North Idaho.

Mars

Global dust storms on Mars have been compared to haboobs on Earth.[8]

Titan

Dust storms of Titan observed in 2009 and 2010 have been compared to haboobs.[9][10] However, the convective storm clouds are composed of liquid methane droplets, and the dust is likely composed of organic tholins.[10]

See also

References

  1. ^ Farquharson, J. S. (1937). "Haboobs and instability in the sudan". Quarterly Journal of the Royal Meteorological Society. 63 (271): 393–414. Bibcode:1937QJRMS..63..393F. doi:10.1002/qj.49706327111.
  2. ^ Lawson, T. J. (1971). "Haboob Structure at Khartoum". Weather. 26 (3): 105–112. Bibcode:1971Wthr...26..105L. doi:10.1002/j.1477-8696.1971.tb07402.x.
  3. ^ Membery, D. A. (1985). "A Gravity-Wave Haboob?". Weather. 40 (7): 214–221. Bibcode:1985Wthr...40..214M. doi:10.1002/j.1477-8696.1985.tb06877.x.
  4. ^ Sutton, L. J. (1925). "Haboobs". Quarterly Journal of the Royal Meteorological Society. 51 (213): 25–30. Bibcode:1925QJRMS..51...25S. doi:10.1002/qj.49705121305.
  5. ^ Idso, S.B.; Ingram, R.S.; Pritchard, J.M. (1972). "An American Haboob". Bulletin of the American Meteorological Society. 53 (10): 930–935. Bibcode:1972BAMS...53..930I. doi:10.1175/1520-0477(1972)053<0930:AAH>2.0.CO;2.
  6. ^ Idso, Carolyn W. (1973). "Haboobs in Arizona". Weather. 28 (4): 154–155. Bibcode:1973Wthr...28..154I. doi:10.1002/j.1477-8696.1973.tb02253.x.
  7. ^ Chen, W.; Fryrear, D.W. (2002). "Sedimentary characteristics of a haboob dust storm". Atmospheric Research. 61 (1): 75–85. Bibcode:2002AtmRe..61...75C. doi:10.1016/S0169-8095(01)00092-8.
  8. ^ Boyle, R. (9 March 2017). "Everything About Mars Is the Worst". FiveThirtyEight. Retrieved 9 March 2017.
  9. ^ Keane, James Tuttle (October 2018). "Haboobs on Titan". Nature Geoscience. 11 (10): 705. Bibcode:2018NatGe..11..705K. doi:10.1038/s41561-018-0240-3. ISSN 1752-0908. S2CID 135135003.
  10. ^ a b Rodriguez, S.; Le Mouélic, S.; Barnes, J. W.; Kok, J. F.; Rafkin, S. C. R.; Lorenz, R. D.; Charnay, B.; Radebaugh, J.; Narteau, C.; Cornet, T.; Bourgeois, O. (October 2018). "Observational evidence for active dust storms on Titan at equinox". Nature Geoscience. 11 (10): 727–732. Bibcode:2018NatGe..11..727R. doi:10.1038/s41561-018-0233-2. ISSN 1752-0908. S2CID 134006536.

External links

  • Haboob Photos @ HikeArizona.COM
  • Haboobs, Arizona Department of Transportation.
  • The Bibliography of Aeolian Research
  • Haboob on Winds of the World
  • Short Video of the 5 July 2011 Arizona Haboob (Flash Video software or a web browser supporting H.264/MPEG-4 AVC is necessary to see the content) on YouTube
  • Time-lapse video of the 5 July 2011 Arizona Haboob

haboob, haboob, arabic, بوب, romanized, habūb, blasting, drifting, type, intense, dust, storm, carried, atmospheric, gravity, current, also, known, weather, front, occur, regularly, land, area, regions, throughout, world, spring, contents, description, occurre. A haboob Arabic ه بوب romanized habub lit blasting drifting is a type of intense dust storm carried on an atmospheric gravity current also known as a weather front Haboobs occur regularly in dry land area regions throughout the world Haboob in Big Spring Tx Contents 1 Description 2 Occurrence 2 1 Middle East 2 2 North Africa 2 3 Australia 2 4 North America 2 5 Mars 2 6 Titan 3 See also 4 References 5 External linksDescription EditDuring thunderstorm formation winds move in a direction opposite to the storm s travel and they move from all directions into the thunderstorm When the storm collapses and begins to release precipitation wind directions reverse gusting outward from the storm and generally gusting the strongest in the direction of the storm s travel 1 2 3 When this downdraft of cold air or downburst reaches the ground it blows dry loose silt and clay collectively dust up from the desert creating a wall of airborne sediment that precedes the storm cloud This wall of dust can be up to 100 km 62 mi wide and several kilometers in elevation At their strongest haboob winds often travel at 35 100 km h 22 62 mph and they may approach with little or no warning Often rain does not appear at ground level as it evaporates in the hot dry air a phenomenon known as virga The evaporation cools the rushing air even further and accelerates it Occasionally when the rain does persist it can contain a considerable quantity of dust Severe cases are called mud storms Eye and respiratory system protection is advisable for anyone who must be outside during a haboob Moving to shelter is highly advised during a strong event Occurrence EditMiddle East Edit Haboobs have been observed in the Sahara Sahel typically Sudan where they were named and described as well as across the Arabian Peninsula throughout Kuwait and in the most arid regions of Iraq 4 Haboob winds in the Arabian Peninsula Iraq and Kuwait are frequently created by the collapse of a thunderstorm North Africa Edit Small boat in River Nile Sudan African haboobs result from the northward summer shift of the Intertropical Convergence Zone into North Africa bringing moisture from the Gulf of Guinea Australia Edit Haboobs in Australia may be frequently associated with cold fronts The deserts of Central Australia especially near Alice Springs are particularly prone to haboobs with sand and debris reaching several kilometers into the sky and leaving up to 30 centimetres 1 ft of sand in the haboob s path North America Edit See also North American Monsoon As with haboobs in the Middle East haboob occurrences in North America are often created by the collapse of a thunderstorm This is a local or mesoscale event and at times of extreme drought they can originate in agricultural regions Some of the most famous dust storms of the Dust Bowl and similar conditions later were in fact synoptic scale events typically generated by a strong cold frontal passage with storms on 11 November 1911 9 11 May 1934 14 April 1935 and 19 February 1954 having been particularly vivid examples The arid and semiarid regions of North America in fact any dry region may experience haboobs In North America the most common terms for these events are either dust storm or sandstorm In the U S they frequently occur in the deserts of Arizona including around the cities of Yuma and Phoenix 5 6 in New Mexico including Albuquerque eastern California and Texas 7 They also sometimes occur in the Columbia Basin of Eastern Washington almost always leading to an impact on the city of Spokane If these storms are strong enough they can reach as far east as Post Falls and Moscow in North Idaho Mars Edit Global dust storms on Mars have been compared to haboobs on Earth 8 Titan Edit Dust storms of Titan observed in 2009 and 2010 have been compared to haboobs 9 10 However the convective storm clouds are composed of liquid methane droplets and the dust is likely composed of organic tholins 10 See also Edit weather portalBora wind Dry thunderstorm Dust devil Intertropical Convergence Zone Khamsin Mistral wind Outflow boundary Simoom SiroccoReferences Edit Farquharson J S 1937 Haboobs and instability in the sudan Quarterly Journal of the Royal Meteorological Society 63 271 393 414 Bibcode 1937QJRMS 63 393F doi 10 1002 qj 49706327111 Lawson T J 1971 Haboob Structure at Khartoum Weather 26 3 105 112 Bibcode 1971Wthr 26 105L doi 10 1002 j 1477 8696 1971 tb07402 x Membery D A 1985 A Gravity Wave Haboob Weather 40 7 214 221 Bibcode 1985Wthr 40 214M doi 10 1002 j 1477 8696 1985 tb06877 x Sutton L J 1925 Haboobs Quarterly Journal of the Royal Meteorological Society 51 213 25 30 Bibcode 1925QJRMS 51 25S doi 10 1002 qj 49705121305 Idso S B Ingram R S Pritchard J M 1972 An American Haboob Bulletin of the American Meteorological Society 53 10 930 935 Bibcode 1972BAMS 53 930I doi 10 1175 1520 0477 1972 053 lt 0930 AAH gt 2 0 CO 2 Idso Carolyn W 1973 Haboobs in Arizona Weather 28 4 154 155 Bibcode 1973Wthr 28 154I doi 10 1002 j 1477 8696 1973 tb02253 x Chen W Fryrear D W 2002 Sedimentary characteristics of a haboob dust storm Atmospheric Research 61 1 75 85 Bibcode 2002AtmRe 61 75C doi 10 1016 S0169 8095 01 00092 8 Boyle R 9 March 2017 Everything About Mars Is the Worst FiveThirtyEight Retrieved 9 March 2017 Keane James Tuttle October 2018 Haboobs on Titan Nature Geoscience 11 10 705 Bibcode 2018NatGe 11 705K doi 10 1038 s41561 018 0240 3 ISSN 1752 0908 S2CID 135135003 a b Rodriguez S Le Mouelic S Barnes J W Kok J F Rafkin S C R Lorenz R D Charnay B Radebaugh J Narteau C Cornet T Bourgeois O October 2018 Observational evidence for active dust storms on Titan at equinox Nature Geoscience 11 10 727 732 Bibcode 2018NatGe 11 727R doi 10 1038 s41561 018 0233 2 ISSN 1752 0908 S2CID 134006536 External links Edit Wikimedia Commons has media related to Haboobs Haboob Photos HikeArizona COM Haboobs Arizona Department of Transportation The Bibliography of Aeolian Research Haboob on Winds of the World Short Video of the 5 July 2011 Arizona Haboob Flash Video software or a web browser supporting H 264 MPEG 4 AVC is necessary to see the content on YouTube Time lapse video of the 5 July 2011 Arizona Haboob Retrieved from https en wikipedia org w index php title Haboob amp oldid 1134666503, wikipedia, wiki, book, books, library,

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