Tracking the impacts of precipitation phase changes through the hydrologic cycle in snowy regions: From precipitation to reservoir storage
نویسندگان
چکیده
Cool season precipitation plays a critical role in regional water resource management the western United States. Throughout twenty-first century, will be impacted by rising temperatures and changing circulation patterns. Changes to magnitude remain challenging project; however, phase is largely dependent on temperature, temperature predictions from global climate models are generally agreement. To understand implications of this dependence, we investigate projected patterns for mountain areas States over century how shifts snow rain may impact runoff. We downscale two bias-corrected historical end-century decades with Weather Research Forecasting (WRF) model estimate spatial at high resolution (9 km). For future decades, use RCP 8.5 scenario, which considered very baseline emissions scenario quantify differences major chains U.S. Under average annual snowfall fraction Sierra Nevada decreases >45% end century. In contrast, colder Rocky Mountains, 29%. Streamflow peaks basins draining arrive nearly month earlier By coupling WRF resources model, that California reservoirs shift towards maximum storage 1–2 months, suggesting strategies need adapt changes streamflow timing.
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ژورنال
عنوان ژورنال: Frontiers in Earth Science
سال: 2022
ISSN: ['2296-6463']
DOI: https://doi.org/10.3389/feart.2022.995874