Earth System Dynamics
Earth System Dynamics
ESD
Articles | Volume 16, issue 5
Articles | Volume 16, issue 5
https://doi.org/10.5194/esd-16-1483-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esd-16-1483-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 5
Research article
 | 
11 Sep 2025
Research article |  | 11 Sep 2025

Simple physics-based adjustments reconcile the results of Eulerian and Lagrangian techniques for moisture tracking in atmospheric rivers

Alfredo Crespo-Otero, Damián Insua-Costa, Emilio Hernández-García, Cristóbal López, and Gonzalo Míguez-Macho

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Short summary
We evaluated two Lagrangian moisture tracking tools for computing moisture sources in precipitation events related to atmospheric rivers (ARs) and compared them against the Weather Research and Forecasting (WRF) model with water vapor tracers. Our results show that both tools (the Sodemann et al., 2008, and Dirmeyer and Brubaker, 1999, methodologies) present a systematic underestimation of remote sources.  Implementing simple physics-based changes substantially improved both methods, narrowing the disparities among all approaches.
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