{"title":"Weather classifications for high temperatures in Japanese cities","authors":"Ryo N. Matsuoka, Masaru Inatsu","doi":"10.2151/sola.2024-040","DOIUrl":null,"url":null,"abstract":"</p><p>We present weather classifications for high temperatures in major Japanese cities. We created a self-organizing map (SOM) of summer pressure patterns in Japan and generated frequency distributions of hot days on the SOM node space for each city. Through hierarchical clustering, we identified several weather zones, which tended to coincidently experience hot summer days with daily maximum temperatures of 30°C or more, or extremely hot days with daily maximum temperatures of 35°C or more. The obtained weather zones for hot summer days partially followed a local climate classification previously proposed in geography. In contrast, weather zones for extremely hot days lacked geographical continuity and were rather related to whether the sites are inland or coastal. This suggested that extremely hot days were frequently caused by the foehn phenomenon.</p>\n<p></p>","PeriodicalId":49501,"journal":{"name":"Sola","volume":"52 1","pages":""},"PeriodicalIF":1.7000,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sola","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.2151/sola.2024-040","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METEOROLOGY & ATMOSPHERIC SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
We present weather classifications for high temperatures in major Japanese cities. We created a self-organizing map (SOM) of summer pressure patterns in Japan and generated frequency distributions of hot days on the SOM node space for each city. Through hierarchical clustering, we identified several weather zones, which tended to coincidently experience hot summer days with daily maximum temperatures of 30°C or more, or extremely hot days with daily maximum temperatures of 35°C or more. The obtained weather zones for hot summer days partially followed a local climate classification previously proposed in geography. In contrast, weather zones for extremely hot days lacked geographical continuity and were rather related to whether the sites are inland or coastal. This suggested that extremely hot days were frequently caused by the foehn phenomenon.
期刊介绍：
SOLA (Scientific Online Letters on the Atmosphere) is a peer-reviewed, Open Access, online-only journal. It publishes scientific discoveries and advances in understanding in meteorology, climatology, the atmospheric sciences and related interdisciplinary areas. SOLA focuses on presenting new and scientifically rigorous observations, experiments, data analyses, numerical modeling, data assimilation, and technical developments as quickly as possible. It achieves this via rapid peer review and publication of research letters, published as Regular Articles.
Published and supported by the Meteorological Society of Japan, the journal follows strong research and publication ethics principles. Most manuscripts receive a first decision within one month and a decision upon resubmission within a further month. Accepted articles are then quickly published on the journal’s website, where they are easily accessible to our broad audience.
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