Major meteorological data in Tokyo are observed on the green ground of Kitanomaru Park in the very heart of Tokyo.

Tokyo’s meteorological data collection began at the first Tokyo Meteorological Observatory in Akasaka, Tokyo, in 1875.  In accordance with the relocation of the meteorological observatory to Otemachi, Tokyo, in 1923, the data collection was carried out there till 2014.

As this area is Japan’s largest business district, the data collection site was moved to a better place, on the green ground of Kitanomaru Park in 2014 to avoid an urban heat island effect as shown in the first photo.  Kitanomaru Park is a big green zone as shown in the second photo. This park originally was a part of old Edo Castle, where successive shogun’s relative families lived.  After the end of the samurai government, it once was used for the Imperial Guard Division and was converted into a public park after the end of the Second World War.

Thanks to the ideal surroundings for the purpose, the meteorological facility works night and day to record important data of the metropolis.

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