The Cryosphere
The Cryosphere
TC
Articles | Volume 20, issue 10
Articles | Volume 20, issue 10
https://doi.org/10.5194/tc-20-5829-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-20-5829-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 20, issue 10
Research article
 | 
13 Oct 2026
Research article |  | 13 Oct 2026

Introducing a new normalized cryospheric index (NCI) to categorize sub-watersheds on arid environments

Christopher Ulloa, Ayon García, and Anouk Beniest

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Short summary
In arid zones, water comes mainly from snow, glaciers and ice-rich permafrost landforms. We introduce the Normalized Cryospheric Index (NCI), which combines ice storage and snow permanence to rank sub-watersheds where no regulatory framework exists. Applied to the Copiapó basin (Atacama, Chile), the NCI identifies the Montosa, Del Potro, Manflas and Estero Come Caballos sub-watersheds as priority targets for sustaining runoff in Chile's national water resources strategy.
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