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Author: search.filters.author.Lauren Somers

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    Cryosphere–groundwater connectivity is a missing link in the mountain water cycle
    (Springer Nature, 2024-07-01)
    The mountain cryosphere and groundwater play pivotal roles in shaping the hydrological cycle, yet their connectivity remains incompletely understood. Current knowledge on meltwater recharge and consequent groundwater discharge processes is better developed for snow–groundwater connectivity than for glacier–groundwater connectivity. Estimates of meltwater recharge vary considerably, which is probably a function of not only inherent catchment characteristics but also of the different spatio-temporal scales involved and the uncertainties in the methods used. This hinders a comprehensive understanding of the mountain water cycle. As glaciers retreat, permafrost thaws and snowpack diminishes, the relative importance of mountain groundwater is expected to increase. However, shifting and declining recharge from the cryosphere may decrease absolute groundwater amounts and fluxes with as-yet unknown effects on catchment-scale hydrological processes. We therefore stress the need to better quantify mountain cryosphere–groundwater connectivity to predict climate change impacts on mountain water supply and to support sustainable water resource management of downstream socio-ecological systems.
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    Cascading downstream impacts of water cycle changes in mountain regions
    (Nature Portfolio, 2026-02-01)
    Mountains, often called the world’s ‘water towers’, are vital sources of freshwater that sustain ecosystems and societies far downstream. Climate change is altering their role, impacting the quantity, timing and quality of mountain water supply. While substantial research focuses on snow and glacier changes within mountains, a holistic understanding of how water cycle changes in mountains impact human water use and ecosystems downstream is still needed. Here we address how these changes cascade downstream, affect diverse social–ecological systems and pose challenges for adaptation. We also highlight major research gaps and outline research priorities for improving understanding of these coupled systems under a changing climate.
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