Via P Gosselin above 3. July 2022
Chart of Kirye
Average temperature data for June is available from the Japan Meteorological Agency (JMA), and today we graphed the June mean temperature data for Tokyo and its Hachijojima island, which is located in the middle of the ocean. 287 km south of Tokyo.
June in urban Tokyo hasn’t warmed up since 1996:
Data sources: JMA
As for the rural island of Hachijojima, June there hasn’t warmed up since 1936:
Data sources: JMA
Next, we compare the average daily maximum temperatures of urban Tokyo and rural Hachijojima and see strong evidence for the urban heat island effect:
While the average daily maximum temperature in Hachijojima has increased modestly over the past 115 years, Tokyo has seen a linear upward trend of nearly 2°C.
Data source: JMA here and here.
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