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Some have speculated that these ice chunks must have fallen from aircraft fuselages after plain water ice accumulating on those aircraft through normal atmospheric conditions has simply broken loose. However, similar events also occurred prior to the invention of aircraft. Studies indicate that the
771:
The process that creates megacryometeors is not completely understood yet, mainly with respect to the atmospheric dynamics necessary to produce them. They may have a similar mechanism of formation that leads to the production of hailstones. Scientific studies show that their composition matches
801:
and stratospheric cooling, can be related to their formation. A detailed micro-Raman spectroscopic study made it possible to place the formation of the megacryometeors within a particular range of temperatures: â10 to â20 °C (14 to â4 °F). They are sometimes confused with
776:
for the areas in which they fall. In addition, megacryometeors also display textural variations of the ice surface and hydro-chemical and isotopic heterogeneity in its composition, which gives potential evidence to a complex formation process in the lower
995:
Orellana, Francisco
Alamilla; Alegre, JosĂ© Ma Ramiro; Cordero PĂ©rez, JosĂ© Carlos; MartĂn Redondo, Ma Paz; Delgado Huertas, Antonio; FernĂĄndez Sampedro, Ma Teresa; Menor-SalvĂĄn, CĂ©sar; Ruiz-Bermejo, Marta; et al. (2008).
922:
Martinez-FrĂas, J.; Delgado, A.; MillĂn, M.; Reyes, E.; Rull, F.; Travis, D.; Garcia, R.; LĂpez-Vera, F.; et al. (2005). "Oxygen and
Hydrogen Isotopic Signatures of Large Atmospheric Ice Conglomerations".
781:. It is known that they do not form from airplane toilet leakage because the large chunks of ice that occasionally do fall from airliners are distinctly blue due to the
759:
More than 50 megacryometeors have been recorded since the year 2000. They vary in mass between 0.5 kilograms (1.1 lb) to several tens of kilograms. One in
1086:
Rull, F.; Delgado, A.; Martinez-Frias, J. (2010). "Micro-Raman spectroscopic study of extremely large atmospheric ice conglomerations (megacryometeors)".
589:
763:
weighed in at more than 50 kilograms (110 lb). Chunks about 2 m (6 ft 7 in) in size also fell in
Scotland on 13 August 1849.
998:"Monitoring the fall of large atmospheric ice conglomerations: a multianalytical approach to the study of the Mejorada del Campo megacryometeor"
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464:
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Martinez-Frias, Jesus; Delgado
Huertas, Antonio (2006). "Megacryometeors: Distribution on Earth and Current Research".
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997:
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1051:
Tornados, dark days, anomalous precipitation, and related weather phenomena: a catalog of geophysical anomalies
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scenario (i.e. clear-sky conditions). They are sometimes called huge hailstones, but do not need to form under
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Philosophical
Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
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which, despite sharing many textural, hydro-chemical, and isotopic features found in large
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703:, is formed under unusual atmospheric conditions which clearly differ from those of the
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835:"Ficha de JesĂșs MartĂnez FrĂas en el Directorio del IGEO de CSIC, 30 de enero de 2021"
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417:
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253:
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Getting to the truth of falling ice chunks, Chemical
Science, Katherine Davies, 2008
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Top 100 Stories of 2008 #73: Giant Ice
Meteors Fall From Clear Skies, Karen Wright
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Comet/asteroid impacts and human society: an interdisciplinary approach
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conditions unlike hailstorms. JesĂșs MartĂnez-FrĂas, a planetary
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Riesgos
Naturales, by Olcina Santos, J. and Ayala-Carcedo, J.
741:Consejo Superior de Investigaciones CientĂficas
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8:
1137:News Report: Ice Chunk Hits Oakland, CA, USA
1157:The problem of Ice Meteorites, Martin Beech
751:, pioneered research into megacryometeors.
1142:The Peculiar Phenomenon of Megacryometeors
907:The Peculiar Phenomenon of Megacryometeors
785:used by them (hence their common name of "
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665:
15:
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979:
960:Ambio: A Journal of the Human Environment
870:Peter T. Bobrowsky; Hans Rickman (2007).
797:, associated with hydration of the lower
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848:Gelo caindo do céu assusta moradores
1005:Journal of Environmental Monitoring
14:
733:Spanish National Research Council
925:Journal of Atmospheric Chemistry
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1132:Megacryometeors: Resource Site
1:
806:because they can leave small
793:metrological fluctuations in
719:at Institute of Geosciences (
1152:What Causes Megacryometeors?
1048:William R. Corliss (1983).
876:. Springer. pp. 343â.
576:Severe weather terminology
38:Temperate and polar seasons
1198:
810:, though they form in the
945:10.1007/s10874-005-2007-7
695:is a very large chunk of
725:Instituto de Geociencias
1167:HALS (blog with cases)
1108:10.1098/rsta.2010.0103
1054:. Sourcebook Project.
740:
724:
637:Tropical cyclone terms
244:Extratropical cyclone
168:Air-mass thunderstorm
772:normal tropospheric
604:Weather modification
202:Anticyclonic tornado
1100:2010RSPTA.368.3145R
937:2005JAtC...52..185M
599:Weather forecasting
435:Rain and snow mixed
261:Subtropical cyclone
972:10.1579/06-S-187.1
853:2007-09-27 at the
705:cumulonimbus cloud
655:Weather portal
271:Atlantic hurricane
249:European windstorm
156:Volcanic lightning
117:Cumulonimbus cloud
1094:(1922): 3145â52.
1061:978-0-915554-10-2
883:978-3-540-32709-7
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887:. Retrieved
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799:stratosphere
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783:disinfectant
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709:thunderstorm
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408:Diamond dust
395:
332:Winter storm
163:Thunderstorm
1026:10261/36027
981:10261/36014
816:outer space
622:Meteorology
557:Meteorology
445:Snow roller
440:Snow grains
403:Ice pellets
352:Snow squall
283:Storm surge
229:Anticyclone
185:Mesocyclone
173:Thundersnow
122:Arcus cloud
966:(6): 314.
931:(2): 185.
889:2 February
822:References
812:atmosphere
795:tropopause
779:atmosphere
701:hailstones
616:Glossaries
552:Jet stream
491:Convection
477:Atmosphere
425:Cloudburst
288:Dust storm
254:Nor'easter
224:Fire whirl
219:Dust devil
212:Waterspout
139:Heat burst
134:Microburst
92:Wet season
80:Dry season
774:rainwater
767:Formation
731:) in the
713:geologist
547:Heat wave
542:Cold wave
486:Chemistry
337:Ice storm
327:Firestorm
239:Polar low
207:Landspout
190:Supercell
151:Lightning
129:Downburst
85:Harmattan
19:Part of
1176:Category
1116:20529951
1035:18385879
851:Archived
787:blue ice
418:Freezing
379:Freezing
342:Blizzard
21:a series
1096:Bibcode
933:Bibcode
804:meteors
737:Spanish
721:Spanish
572:Extreme
518:Physics
508:Climate
496:Physics
386:Graupel
374:Drizzle
322:Sirocco
305:Monsoon
276:Typhoon
234:Cyclone
197:Tornado
144:Derecho
29:Weather
1114:
1058:
1033:
880:
761:Brazil
749:Madrid
580:Canada
535:Season
465:Topics
310:Amihan
298:Haboob
293:Simoom
105:Storms
60:Autumn
55:Summer
50:Spring
45:Winter
1001:(PDF)
747:) in
585:Japan
513:Cloud
501:River
450:Slush
112:Cloud
1112:PMID
1056:ISBN
1031:PMID
891:2012
878:ISBN
789:").
745:CSIC
729:IGEO
715:and
567:List
530:Mist
430:Snow
413:Rain
391:Hail
317:Gale
1104:doi
1092:368
1021:hdl
1013:doi
976:hdl
968:doi
941:doi
697:ice
525:Fog
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914:^
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691:A
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680:e
673:t
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