The impacts of secondary ice production on microphysics and dynamics in tropical convection

Qu, Z.; Korolev, A.; Milbrandt, J. A.; Heckman, I.; Huang, Y.; McFarquhar, G. M.; Morrison, H.; Wolde, M.; Nguyen, C.

doi:10.5194/acp-22-12287-2022

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i

The impacts of secondary ice production on microphysics and dynamics in tropical convection

2022
By Qu, Z. ; Korolev, A. ; Milbrandt, J. A. ; ...
Source: Atmos. Chem. Phys., 22, 12287–12310

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Journal Title:

Atmospheric Chemistry and Physics
Personal Author:

Qu, Z. ; Korolev, A. ; Milbrandt, J. A. ; Heckman, I. ; Huang, Y. ; ... More +

Qu, Z. ; Korolev, A. ; Milbrandt, J. A. ; Heckman, I. ; Huang, Y. ; McFarquhar, G. M. ; Morrison, H. ; Wolde, M. ; Nguyen, C. Less -
NOAA Program & Office:

CIWRO (Cooperative Institute for Severe and High-Impact Weather Research and Operations)
Description:

Secondary ice production (SIP) is an important physical phenomenon that results in an increase in the ice particle concentration and can therefore have a significant impact on the evolution of clouds. In this study, idealized simulations of a mesoscale convective system (MCS) were conducted using a high-resolution (250 m horizontal grid spacing) mesoscale model and a detailed bulk microphysics scheme in order to examine the impacts of SIP on the microphysics and dynamics of a simulated tropical MCS. The simulations were compared to airborne in situ and remote sensing observations collected during the “High Altitude Ice Crystals – High Ice Water Content” (HAIC-HIWC) field campaign in 2015. It was found that the observed high ice number concentration can only be simulated by models that include SIP processes. The inclusion of SIP processes in the microphysics scheme is crucial for the production and maintenance of the high ice water content observed in tropical convection. It was shown that SIP can enhance the strength of the existing convective updrafts and result in the initiation of new updrafts above the melting layer. Agreement between the simulations and observations highlights the impacts of SIP on the maintenance of tropical MCSs in nature and the importance of including SIP parameterizations in models.
Keywords:

[+]

Microphysics Convection (Meteorology) Mesoscale Convective System (MCS) Secondary Ice Production (SIP)
Source:

Atmos. Chem. Phys., 22, 12287–12310
DOI:

https://doi.org/10.5194/acp-22-12287-2022
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PDF
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Journal Article
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https://creativecommons.org/licenses/by/4.0/
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CC BY
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Submitted
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urn:sha256:b157559903acdbebf8652791be4cb7ae8897e702ed0b9b20319254daac60afd6
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https://repository.library.noaa.gov/view/noaa/51848/noaa_51848_DS1.pdf
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