Item: Global warming response of snowpack in Hokkaido, northern island of Japan
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Title: Global warming response of snowpack in Hokkaido, northern island of Japan
Proceedings: International Snow Science Workshop Proceedings 2018, Innsbruck, Austria
Authors:
- Yuta Katsuyama [ Graduate School of Science, Hokkaido University, Sapporo, Japan ]
- Masaru Inatsu [ Faculty of Science, Hokkaido University, Sapporo, Japan ]
- Tatsuo Shirakawa [ Kitami Institute of Technology, Kitami, Japan ]
Date: 2018-10-07
Abstract: The seasonal snowpack over Hokkaido, Japan, responding to the global warming in a decade when the global-mean air temperature would increase by 2 K relative to 1990s, was estimated with a physical snowpack model driven by multiple dynamically downscaled (DDS) data, after the snowpack model validation by comparing between the snow-pit observation and the hindcast simulation at 28 sites in a late-winter date and between the automatic observation and the DDS-forced simulation at 108 sites. The validation assured that the snowpack model succesfsully reproduced height of snowcover (HS), snow water equivalent (SWE), and snow-covered days (SCD) over Hokkaido. Responding to the global warming, the annual maximum HS and SWE would largely decrease by 30% in western and eastern Hokkaido following a decrease in precipitation amount during the accumulation period. SCD would be also shortened by about a month over Hokkaido.
Object ID: ISSW2018_O05.2.pdf
Language of Article: English
Presenter(s):
Keywords: Global warming impact, Seasonal snowpack, Snowpack modeling, Uncertainty
Page Number(s): 417-419
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