Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 10
Articles | Volume 26, issue 10
https://doi.org/10.5194/acp-26-7435-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/acp-26-7435-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 10
Research article
 | 
29 May 2026
Research article |  | 29 May 2026

Effects of model grid spacing for warm conveyor belt (WCB) moisture transport into the upper troposphere and lower stratosphere (UTLS) – Part 1: Lagrangian perspective

Cornelis Schwenk and Annette Miltenberger

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Short summary
We studied how model grid-spacing affects how moisture and ice are carried upward in large weather systems that move warm, moist air into the upper troposphere. By comparing high- and low-resolution simulations, we found that models which are able to represent convectively ascending air produce much drier air at high altitudes. This shows that model resolution strongly influences how water and clouds are transported and how they may affect climate.
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