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The Great Slave Lake PyroCb of 5 August 2014: Observations, Simulations, Comparisons With Regular Convection, and Impact on UTLS Water Vapor
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2018
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Source: Journal of Geophysical Research: Atmospheres, 123(21), 12,332-12,352
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Journal Title:Journal of Geophysical Research: Atmospheres
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Description:Thisstudyanalyzesapyrocumulonimbus(pyroCb)thatformednearGreatSlaveLakeinthe NorthwestTerritoriesofCanadaon5August2014usingmultiplesatellite-andground-baseddatasets,meteorologicalreanalysis,andacloud-resolvingmodel.Passiveandactivepolar-orbitinginstrumentsand geostationaryimagerydetailtheintenseupdraftcolumnduringtheseveralhours-longconvectivestage andcapturetheentirepyroCblifecycle.CloudSatradarreflectivityprofilesandlocalsoundingsshowthepyroCbcloudbasewas ≥1kmabovetheliftingcondensationlevel.Comparisonswithprofilesthrough meteorologicalconvectioninthesameregionreaffirmpreviousevidencefordelayeddropletgrowthwithin pyroconvectiveupdrafts.ThepyroCbpenetratedthetropopause,reachingatleast14km( θ≃380K),and
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Source:Journal of Geophysical Research: Atmospheres, 123(21), 12,332-12,352
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DOI:
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ISSN:2169-897X;2169-8996;
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Rights Information:Other
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Compliance:Library
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