Homogeneous Freezing Events Sampled in the Tropical Tropopause Layer

Jensen, E. J.; Diskin, G. S.; DiGangi, J.; Woods, S.; Lawson, R. P.; Bui, T. V.

doi:10.1029/2022jd036535

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i

Homogeneous Freezing Events Sampled in the Tropical Tropopause Layer

2022
By Jensen, E. J. ; Diskin, G. S. ; DiGangi, J. ; ...
Source: Journal of Geophysical Research: Atmospheres, 127(17)

[PDF-1.51 MB]

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Journal Title:

Journal of Geophysical Research: Atmospheres
Personal Author:

Jensen, E. J. ; Diskin, G. S. ; DiGangi, J. ; Woods, S. ; Lawson, R. P. ; ... More +

Jensen, E. J. ; Diskin, G. S. ; DiGangi, J. ; Woods, S. ; Lawson, R. P. ; Bui, T. V. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; CSL (Chemical Sciences Laboratory)

OAR (Oceanic and Atmospheric Research) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; CSL (Chemical Sciences Laboratory) Less -
Description:

High-frequency (20 Hz) aircraft measurements of tropical tropopause layer (TTL) cirrus and humidity are used to examine recent homogeneous freezing ice nucleation events. Several localized regions with peak ice concentrations greater than 10 cm −3 are documented. These high ice concentrations are almost certainly generated by homogeneous freezing of aqueous aerosols. The high-frequency data reveals considerable structure in the cloud properties and humidity at along-track scales as short as 8.5 m. Simulations of vapor depletion by growing ice crystals are used to assess the time since nucleation in these high ice concentration patches. Comparisons between observed and simulated dependence of supersaturation on ice
Keywords:

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Atmospheric Science Earth And Planetary Sciences (miscellaneous) Geophysics Space And Planetary Science
Source:

Journal of Geophysical Research: Atmospheres, 127(17)
DOI:

https://doi.org/10.1029/2022jd036535
ISSN:

2169-897X;2169-8996;
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PDF
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American Geophysical Union (AGU)
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Journal Article
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urn:sha256:64525db9f6c64336ddaa1a6867193fedfc0829d799c0d92b56bba66d864fb798
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https://repository.library.noaa.gov/view/noaa/53551/noaa_53551_DS1.pdf
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