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Leveraging HydroShare to Process, Analyze, and Share Atmospheric River Event Metrics from CESM2 Large Ensemble

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Created:	Jul 30, 2025 at 11:50 a.m. (UTC)
Last updated:	Sep 10, 2025 at 4:41 p.m. (UTC)
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Abstract

This use case explores the capabilities of the CESM2 Large Ensemble (LENS) in capturing the intensity and frequency of atmospheric river (AR) events. By applying AR classification methods (as outlined in Ralph et al., 2019), we categorize events by intensity and duration to assess historical variability and future risk scenarios relevant to emergency planning. To enable scalable analysis and FAIR data sharing, we convert large NetCDF datasets into Zarr format, hosted and published via HydroShare. This allows users to either reproduce the AR analysis using our shared notebooks and utilities or adapt the workflow to new ensemble members or future climate runs. HydroShare’s cloud-optimized ecosystem ensures that derived products remain accessible, reusable, and actionable across the hydrologic and climate science communities.

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Related Resources

The content of this resource references

Garousi-Nejad, I., A. M. Castronova (2025). A Subset of CESM2 LENS IVT (Integrated Vapor Transport) Zarr, HydroShare, http://www.hydroshare.org/resource/53effa6f532b43a5972daa5336932224

This resource belongs to the following collections:

Title	Owners	Sharing Status	My Permission
Interactive Science Use Cases Showcasing HydroShare’s Cloud-Native Features	Irene Garousi-Nejad · Anthony Castronova	Public & Shareable	Open Access

Credits

Funding Agencies

This resource was created using funding from the following sources:

Agency Name	Award Title	Award Number
National Oceanic and Atmospheric Administration	NOAA Cooperative Agreement with The University of Alabama, awarded to the Cooperative Institute for Research to Operations in Hydrology (CIROH)	NA22NWS4320003

How to Cite

Garousi-Nejad, I., A. M. Castronova (2025). Leveraging HydroShare to Process, Analyze, and Share Atmospheric River Event Metrics from CESM2 Large Ensemble, HydroShare, http://www.hydroshare.org/resource/6920ead7e39c4c7faba951c1417fb4b6

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/

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