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Impacts of climate change on snow accumulation and melting processes over mountainous regions in Northern California during the 21st century.

08:00 EDT 21st May 2019 | BioPortfolio

Summary of "Impacts of climate change on snow accumulation and melting processes over mountainous regions in Northern California during the 21st century."

A point-location-based analysis of future climate change impacts on snow accumulation and melting processes was conducted over three study watersheds in Northern California during a 90-year future period by means of snow regime projections. The snow regime projections were obtained by means of a physically-based snow model with dynamically downscaled future climate projections. Then, atmospheric and snow-related variables, and their interrelations during the 21st century were investigated to reveal future climate change impacts on snow accumulation and melting processes. The analysis shows large reductions in snow water equivalent (SWE), snowfall to precipitation (S/P) ratio, and snowmelt through the 21st century. Timing of the peak of the SWE and snowmelt will also change in the future. Meanwhile, the analysis in this study shows that air temperature rise will affect, but will not dominate the future change in snowmelt over the study watersheds. This result implies the importance of considering atmospheric variables other than air temperature, such as precipitation, shortwave radiation, relative humidity, and wind speed even if these variables will not clearly change during the 21st century.

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This article was published in the following journal.

Name: The Science of the total environment
ISSN: 1879-1026
Pages: 104-115

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