Monitoring Mountain Weather Variabilities Based on Decadal Observations of the Present Weather Sensor in the Highland of Central Japan
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- YANG Yihui
- Graduate School of Life and Environmental Sciences, University of Tsukuba, graduated
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- UENO Kenichi
- Faculty of Life and Environmental Sciences, University of Tsukuba
Bibliographic Information
- Other Title
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- 中部日本高地における山岳域の天候変動の現在天気計による10年監視
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Abstract
<p> Few studies have revealed the statistical tendencies of occurrences for cloud, fog, heavy rain or snowfall that characterizes mountain weather variabilities in Japan. Characteristics of seasonal and diurnal variations in fog and mist discriminated by visibility, precipitation types and precipitation intensity were clarified using data from November 2010 to October 2020 observed by Vaisala present weather sensor in the Sugadaira highland (1,320 m), Nagano Prefecture in Japan. Mist appeared more frequently than fog, and both increased in frequency at night. Fog prevailed in spring and autumn, while mist prevailed in the summer. In contrast, mist at the Nagano Local Meteorological Office (418 m) occurred frequently in the cold season and in the early morning. The frequency of snow and sleet decreased in the daytime. Sleet was infrequent but prevailed in December and March with the passing of south-coast cyclones and twin cyclones. The occurrence of freezing precipitation was very rare, but some intensive periods were found. Strong rain rates dominated from July to September, especially in the evening, and moderate and weak rain rates dominated in June or October when the Baiu front or typhoon prevails. There was no clear difference in seasonal/diurnal change depending on the snowfall intensity. The frequency for strong-intensity snowfall increased in cases of passing south-coast or twin cyclones. Instead of previous low-frequently visible observation, the characteristics derived by high-temporal long-term data could be utilized as validation data for satellite observation or numerical experiments.</p>
Journal
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- Journal of Geography (Chigaku Zasshi)
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Journal of Geography (Chigaku Zasshi) 131 (4), 393-405, 2022-08-25
Tokyo Geographical Society
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Keywords
Details 詳細情報について
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- CRID
- 1390574820807118848
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- NII Book ID
- AN00322536
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- ISSN
- 18840884
- 0022135X
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- NDL BIB ID
- 032348883
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
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- Abstract License Flag
- Disallowed