title: Comparison of the changes in temperatures among rural, urban and metropolitan areas around the Inland Sea in Japan.
abstract: We investigated the changes in temperatures in Takamatsu, Tadotsu and Osaka areas in Japan. Data of temperatures in Takamatsu (urban area: 1942-2009), Tadotsu (rural area: 1893-2009) and Osaka (metropolitan area: 1883-2009) areas around the Inland Sea in Japan was obtained from Japan Meteorological Agency. The changes in temperatures in three areas in Japan were analyzed and compared. By using data from 1942 to 2009, various parameters of temperatures were significantly correlated with years. The changes in mean temperature in August and in a year in Takamatsu area for 50 years were highest (August: 1.6°C, Year: 1.8°C) among three areas. In addition, correlation coefficient rate between years and the number of days over the level of 34°C in August in Takamatsu area was highest (r = 0.567, p < 0.0001). Parameters of temperatures were gradually increased with years in all three areas. The heat island effect in Takamatsu area was similar to Osaka area in Japan.
authors.affiliation: Department of Hygiene, Faculty of Medicine, Kagawa University, Miki, Kagawa, 761-0793, Japan. miyarin@med.kagawa-u.ac.jp
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Miyatake
authors.forename: Noriko
authors.initials: N
authors.lastname: Sakano
authors.forename: Shoko
authors.initials: S
authors.lastname: Murakami
authors.forename: Shigeru
authors.initials: S
authors.lastname: Suna
authors.forename: Takeshi
authors.initials: T
authors.lastname: Suzue
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Hirao
mesh_terms: D002947:Cities / Q000706:statistics & numerical data*; D057231:Climate Change / Q000706:statistics & numerical data*; D004784:Environmental Monitoring; D007564:Japan; D009792:Oceans and Seas; D013696:Temperature