High‐frequency gravity waves and homogeneous ice nucleation in tropical tropopause layer cirrus

Details

• Journal Title:
  Geophysical Research Letters
• Personal Author:
  Jensen, Eric J. ; Ueyama, Rei ; Pfister, Leonhard ; Bui, Theopaul V. ; Alexander, M. Joan ; Podglajen, Aurélien ; Hertzog, Albert ; Woods, Sarah ; Lawson, R. Paul ; Kim, Ji‐Eun ; Schoeberl, Mark R.
• NOAA Program & Office:
  NESDIS (National Environmental Satellite, Data, and Information Service)
• Description:
  The impact of high-frequency gravity waves on homogeneous-freezing ice nucleation in cold cirrus clouds is examined using parcel model simulations driven by superpressure balloon measurementsoftemperaturevariabilityexperiencedbyairparcelsinthetropicaltropopauseregion. Wefindthattheprimaryinfluenceofhigh-frequencywavesistogeneraterapidcoolingeventsthatdriveproductionofnumerousicecrystals.Quenchingoficenucleationeventsbytemperaturetendencyreversal inthehighest-frequencywavesdoesoccasionallyproducelowiceconcentrations,buttheoverallimpact of high-frequency waves is to increase the occurrence of high ice concentrations. The simulated iceconcentrationsareconsiderablyhigherthanindicate dbyinsitumeasurementsofcirrusinthetropical tropopauseregion.One-dimensionalsimulationssuggestthatalthoughsedimentationreducesmean
• Keywords:
  General Earth And Planetary Sciences Geophysics General Earth And Planetary Sciences General Earth And Planetary Sciences
• Source:
  Geophysical Research Letters, 43(12), 6629-6635
• DOI:
  https://doi.org/10.1002/2016gl069426
• ISSN:
  0094-8276 ; 1944-8007
• Format:
  PDF
• Publisher:
  American Geophysical Union (AGU)
• Document Type:
  Journal Article
• Rights Information:
  Other
• Compliance:
  Library
• Main Document Checksum:
  urn:sha256:2feca33044515f81727d4e76d932542d38c6994a1387c1691ba92ec69abdefa0
• Download URL:
  https://repository.library.noaa.gov/view/noaa/53550/noaa_53550_DS1.pdf
• File Type:
  [PDF - 698.66 KB ]