The Lagrangian moisture source and transport diagnostic WaterSip V3.2

Sodemann, Harald

doi:10.5194/gmd-18-8887-2025

Articles | Volume 18, issue 22

https://doi.org/10.5194/gmd-18-8887-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-18-8887-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 22

Model description paper

|

24 Nov 2025

Model description paper |

| 24 Nov 2025

The Lagrangian moisture source and transport diagnostic WaterSip V3.2

Harald Sodemann

Data sets

Particle position output from the FLEXPART dispersion model for a test case for use with the WaterSip moisture source diagnostic Harald Sodemann https://doi.org/10.5281/zenodo.14836548

Model code and software

Source code of the Lagrangian moisture source and transport diagnostic WaterSip V3.2.1 Harald Sodemann https://doi.org/10.5281/zenodo.15068065

Short summary

The WaterSip software locates regions where precipitation comes from. WaterSip evaluates of the water budget of the air masses, providing information on the conditions during evaporation, transport, and arrival at the target area. WaterSip can be easily configured and writes gridded output files. Guidance is given on where uncertainties arise using a case study, and best practices are recommended. This manuscript supports the comparison of different methods to find precipitation sources.