Analysis of geotagged thermal sensation-related Tweets in urban areas

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K15152
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 23020:Architectural environment and building equipment-related
• Research Institution: National Institute for Land and Infrastructure Management (2020-2021); Building Research Institute (2019)
• Principal Investigator: Kumakura Eiko 国土技術政策総合研究所, 都市研究部, 主任研究官 (90716135)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: SNSデータ / 暑熱環境 / Twitter / 人流ビッグデータ

Outline of Final Research Achievements

In order to study adaptation to the urban heat island phenomenon, this paper investigates people's behavior and reactions to the thermal stress using big data. Trends in tweets including 'hot' word posted in Tokyo in the summers of 2011-19 were analyzed. On weekdays, the tweets were posted at stations in the morning and in the office area during the daytime, while on holydays tweets were posted in tourism areas during the daytime. The results show the need to consider the target people and the situations in which heat protection is required.

Free Research Field

都市環境工学

Academic Significance and Societal Importance of the Research Achievements

一般的なアンケート調査だけでは取得が難しい、あらゆる時間帯や場所における都市生活者の暑熱に対する応答や行動を、SNSデータや人流ビッグデータを用いることで把握する点は、ヒートアイランド研究の新たな手法による取り組みという観点から学術的に意義がある。また、暑さを感じる人々の分布は、都市の熱的脆弱性として捉えることもでき、地域の気候変動適応計画等、暑熱対策推進のための科学的エビデンスに寄与し、社会的意義がある。