Weather and Climate Dynamics
Weather and Climate Dynamics
WCD
Articles | Volume 6, issue 2
Articles | Volume 6, issue 2
https://doi.org/10.5194/wcd-6-431-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wcd-6-431-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 6, issue 2
Research article
 | 
17 Apr 2025
Research article |  | 17 Apr 2025

Moisture transport axes: a unifying definition for tropical moisture exports, atmospheric rivers, and warm moist intrusions

Clemens Spensberger, Kjersti Konstali, and Thomas Spengler

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Short summary
The transport of moisture from warmer and moister to colder and drier regions mainly occurs in brief and narrow bursts. In the mid-latitudes, such bursts are generally referred to as atmospheric rivers; in the Arctic they are often referred to as warm moist intrusions. We introduce a new definition to identify such bursts which is based primarily on their elongated structure. With this more general definition, we show that bursts in moisture transport occur frequently across all climate zones.
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