Journal article

A model study on the influence of overshooting convection on TTL water vapour

Anthes R, Randel W, Seidel D, Pan L, Hajj G, Kursinski E, Romans L, Bertiger W, Leroy S, Kuang Z, Bretherton C, Gettelman A, Birner T, Grise K, Thompson D, Zou X, Lin L, Randel W, Wu F, Rios W, Schiller C, Grooß J, Konopka P, Plöger F, Silva dos Santos F, Spelten N, Kim H, Dessler A, Kim J, Son S, Alexander P, de la Torre A, Llamedo P, Hierro R, Khaykin S, Pommereau J, Hauchecorne A, Das U, Pan C, Liu C, Zipser E, Grosvenor D, Choularton T, Coe H, Held G, Liu Z, Ostrenga D, Teng W, Kempler S, Kummerow C, Barnes W, Kozu T, Shiue J, Simpson J, Song I, Chun H, Lane T, Randel W, Wu F, Yuan T, Li Z, Schreiner W, Rocken C, Sokolovskiy S, Syndergaard S, Hunt D, Sherwood S, Horinouchi T, Zeleznik H, Anthes R, Ector D, Hunt D, Kuo Y, Rocken C, Schreiner W, Sokolovskiy S, Syndergaard S, Wee T, Zeng Z, Bernhardt P, Dymond K, Chen Y, Liu H, Manning K, Randel W, Trenberth K, Cucurull L, Healy S, Ho S, McCormick C, Meehan T, Thompson D, Yen N, Hassim M, Lane T, Rieckh T, Scherllin-Pirscher B, Ladstädter F, Foelsche U, Chae J, Wu D, Read W, Sherwood S, Verkhoglyadova O, Leroy S, Ao C, Pirscher B, Foelsche U, Borsche M, Kirchengast G, Kuo Y, Sun B, Reale A, Seidel D, Hunt D, Zou X, Yang S, Ray P, Liu C, Zipser E, Nesbitt S, Jain A, Panwar V, Mandal T, Rao V, Goel A, Gautam R, Das S, Dhaka S, Jain A, Goel A, Mandal T, Rao V, Dhaka S, Dee D, Uppala S, Simmons A, Berrisford P, Poli P, Kobayashi S, Andrae U, Balmaseda M, Balsamo G, Bauer P, Bechtold P, Beljaars A, Berg L, Bidlot J, Bormann N, Delsol C, Dragani R, Fuentes M, Geer A, Flury T, Wu D, Read W, Taylor J, Randel W, Jensen E, Alexander S, Tsuda T, Kawatani Y, Takahashi M, Wang P, Su S, Charvát Z, Šťástka J, Lin H, Xie F, Wu D, Ao C, Mannucci A, Schreiner W, Sokolovskiy S, Hunt D, Rocken C, Kuo Y, Kursinski E, Hajj G, Schofield J, Linfield R, Hardy K, Lin L, Zou X, Anthes R, Kuo Y, Biondi R, Randel W, Ho S, Neubert T, Syndergaard S, Scherllin-Pirscher B, Kirchengast G, Steiner A, Kuo Y, Foelsche U, Holloway C, Neelin J, Ao C, Meehan T, Hajj G, Manucci A, Beyerle G, Lopez P, Sokolovskiy S, von Engeln A, Xie F, Syndergaard S, Kursinski E, Herman B, Hou A, Kakar R, Neeck S, Azarbarzin A, Kummerow C, Kojima M, Oki R, Nakamura K, Iguchi T, Bucholtz A, Hlavka D, McGill M, Schmidt K, Pilewskie P, Davis S, Reid E, Walker A, Deng M, Mace G, Wang Z, Okamoto H, Frey W, Borrmann S, Fierli F, Weigel R, Mitev V, Matthey R, Ravegnani F, Sitnikov N, Ulanovsky A, Cairo F, Luebke A, Afchine A, Costa A, Meyer J, Rolf C, Spelten N, Keckhut P, Borchi F, Bekki S, Hauchecorne A, SiLaouina M, Mace G, Deng M, Soden B, Zipser E, Mioche G, Josset D, Gayet J, Pelon J, Garnier A, Minikin A, Schwarzenboeck A, Sassen K, Campbell J, Schiller C, Krämer M, Afchine A, Spelten N, Sitnikov N, Su H, Jiang J, Liu X, Penner J, Read W, Massie S, Schoeberl M, Colarco P, Livesey N, Santee M, von Engeln A, Teixeira J, Beyerle G, Wang K, Winker D, Pelon J, Coakley J, Ackerman S, Charlson R, Colarco P, Flamant P, Fu Q, Hoff R, Kittaka C, Kubar T, Le Treut H, McCormick M, Mégie G, Poole L, Powell K, Trepte C, Vaughan M, Wielicki B, Hindley N, Wright C, Smith N, Mitchell N, Kursinski E, Hajj G, Leroy S, Herman B, Santhi Y, Ratnam M, Dhaka S, Rao S, Seidel D, Vergados P, Mannucci A, Ao C, Ware R, Exner M, Feng D, Gorbunov M, Hardy K, Melbourne W, Rocken C, Schreiner W, Sokolovski S, Solheim F, Zou X, Anthes R, Businger S, Trenberth K, Biondi R, Ho S, Randel W, Syndergaard S, Neubert T, Liu C, Vergados P, Luo Z, Emanuel K, Mannucci A, Wall C, Zipser E, Liu C, Yuan T, Remer L, Pickering K, Yu H, Xie P, Ao C, Grosvenor D, Choularton T, Coe H, Held G, Hassim M, Lane T, Jain A, Panwar V, Mandal T, Rao V, Goel A, Gautam R, Das S, Dhaka S, Jain S, Jain A, Mandal T, Wang P, Wang C, Luo Z, Chen X, Zeng X, Tao W, Huang X, Davis C, Ahijevych D, Haggerty J, Mahoney M, Gettelman A, Birner T, Robinson F, Sherwood S, Solomon S, Virts K, Wallace J ...see all

Journal of the Atmospheric Sciences, vol. 115, issue 3 (2014) pp. 4977-5002 Published by Elsevier B.V.

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Overshooting deep convection that penetrates into the Tropical Tropopause Layer (TTL) is thought to have an important role in regulating the water vapour content of this region. Yet, the net effect of such convection and the dominant mechanisms remain unclear. This study uses two idealised three-dimensional cloud-resolving model simulations to examine the influence of overshooting convection on water vapour when it penetrates into two different TTL environments, one supersaturated and the other subsaturated with respect to ice. These simulations show that the overshooting convection plays a direct role in driving the ambient environment towards ice saturation through either net moistening (subsaturated TTL) or net dehydration (supersaturated TTL). Moreover, in these cases the extent of dehydration in supersaturated conditions is greater than the moistening in subsaturated conditions. With the aid of modelled passive tracers, the relative roles of transport, mixing and ice microphysics are assessed; ultimately, ice sublimation and scavenging processes play the most important role in defining the different TTL relative humidity tendencies. In addition, significant moistening in both cases is modelled well into the subsaturated tropical lower stratosphere (up to 450 K), even though the overshooting turrets only reach approximately 420 K. It is shown that this moistening is the result of jumping cirrus, which is induced by the localised upward transport and mixing of TTL air following the collapse of the overshooting turret.

Author-supplied keywords

  • 01
  • 0320 Atmospheric composition and structure: Cloud
  • 0341 Atmospheric composition and structure: Middle
  • 06
  • 10
  • 10.1002/2013JD021016 and radio occultation
  • 13
  • 2011
  • 22
  • 3314 Meteorology and atmospheric dynamics: Convect
  • 3319
  • 3332 Meteorology and atmospheric dynamics: Mesosph
  • 3362 Meteorology and atmospheric dynamics: Stratos
  • 447-462
  • 4d-var
  • Aerosols/particulates
  • Ageostrophic circulations
  • Aircraft observations
  • Asia
  • Bayesian methods
  • CAPE
  • CloudSat
  • Clouds
  • Convection
  • Convective clouds
  • ER-2
  • GPS
  • GPS radiosonde
  • Global Positioning System
  • ITCZ
  • Meteorology and atmospheric dynamics (Tropical met
  • Microwave observations
  • OLR
  • Pollution
  • Radio occultations
  • Radioholography
  • Remote sensing
  • Saharan dust layer
  • Saharan dust outbreak
  • Sampling
  • Satellite observations
  • Soundings
  • Specific humidity
  • Superrefraction
  • TC4
  • Temperature
  • Tropical cyclones
  • Tropopause
  • Troposphere
  • Water vapor
  • Wind
  • a
  • above anvil plumes
  • accepted 23 march 2011
  • aerosol
  • and h
  • asian summer monsoon
  • atmos
  • atmospheric waves
  • charvát
  • cirrus retrieval
  • citation
  • convection
  • convective storms
  • convective transport
  • cross tropopause transport of
  • diurnal tides
  • doi
  • doi:10.102
  • doi:10.1029/2009JD013008
  • doi:10.1029/2009JD013104
  • doi:10.1029/2009JD013128
  • doi:10.1029/2010GL046052
  • electron density
  • era-40
  • forecast model
  • gps radio occultation
  • gravity wave breaking
  • h
  • hurricane intensity
  • hydrological cycle
  • j
  • k
  • library 28 april 2011
  • lightning
  • lin
  • lower stratosphere
  • m
  • microphysics
  • model
  • natural hazards
  • observations
  • ocean
  • online
  • p
  • precision
  • pressure
  • published online in wiley
  • radio occultation
  • received 21 january 2011
  • refractivity
  • region
  • remote sensing
  • retrieval
  • review
  • revised 22 march 2011
  • s
  • sci
  • seasonal-variation
  • sounder
  • stratospheric circulation
  • stratospheric water
  • su
  • subvisible cirrus
  • tao
  • tape-recorder
  • temperature
  • terr
  • thunderstorms
  • transport
  • tropopause temperatures
  • upper troposphere
  • upper-air temperature
  • variability
  • wang
  • water by mid-latitude deep
  • water vapor
  • z
  • šťástka

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  • R. A. Anthes

  • William J. Randel

  • Dian J. Seidel

  • Laura L Pan

  • G. a. Hajj

  • E. Robert Kursinski

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