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A Wet‐Bulb Temperature‐Based Rain‐Snow Partitioning Scheme Improves Snowpack Prediction Over the Drier Western United States
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2019
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Source: Geophysical Research Letters, 46(23), 13825-13835
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Journal Title:Geophysical Research Letters
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Description:Accumulation of snowfall during winter and snowmelt in the subsequent spring or earlier summer provides a dominant water source in alpine regions. Most land surface and hydrological models use near ‐surface air temperature ( Ta) thresholds to partition precipitation into snow and rain, underestimating snowfall over drier regions. We developed a snow ‐rain partitioning scheme using the wet ‐bulb temperature ( Tw), which is closer to the surface temperature of a falling hydrometeor than Ta.Twbecomes more depressed in drier environments as derived from Twdepression equation using Taand surface air humidity, resulting in a greater fraction of snowfall. We implemented this new Twscheme
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Source:Geophysical Research Letters, 46(23), 13825-13835
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ISSN:0094-8276;1944-8007;
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Rights Information:Other
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