A simple model to assess the impact of gravity waves on ice-crystal populations in the tropical tropopause layer

Corcos, Milena; Hertzog, Albert; Plougonven, Riwal; Podglajen, Aurélien

doi:https://doi.org/10.5194/acp-23-6923-2023

Articles | Volume 23, issue 12

https://doi.org/10.5194/acp-23-6923-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-23-6923-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 12

Research article

|

22 Jun 2023

Research article |

| 22 Jun 2023

A simple model to assess the impact of gravity waves on ice-crystal populations in the tropical tropopause layer

Milena Corcos, Albert Hertzog, Riwal Plougonven, and Aurélien Podglajen

Data sets

STRATEOLE2-C0: TSEN-Thermodynamics SENsor LMD/IPSL https://data.ipsl.fr/catalog/strateole2/

ATTREX 2014 Global Hawk files NASA https://espoarchive.nasa.gov/archive/browse/attrex/id4/GHawk

Short summary

The role of gravity waves on tropical cirrus clouds and air-parcel dehydration was studied using the combination of Lagrangian observations of temperature fluctuations from superpressure balloons and a 1.5D model. The inclusion of the gravity waves to a reference simulation of a slow ascent around the cold-point tropopause drastically increases ice-crystal density, cloud fraction, and air-parcel dehydration, and it produces a crystal size distribution that agrees better with observations.