Weather observation

 How long did we observe weather? It is on June 1, Meiji 8 (1875) that the Tokyo meteorological observatory which is the predecessor of the present Meteorological Agency started the weather survey. The formal meteorological observing station is not established in Hino until it continues up to now. However, the weather survey was performed in the Ministry of Agriculture and Forestry (that time) sericulture experimental laboratory Hino mulberry farm installed in Meiji 44. About when the ability of the weather survey in the Hino mulberry farm to have begun, the record by Showa 53 to be transferred to Tsukuba from Showa 14 is checked under investigation. In addition, the weather survey has been performed even in metropolitan Tama-doubutsu-kouen since opening in May, Showa 33. Moreover, observation is also performed from Showa 47 at the Japanese special agricultural-chemicals manufacture incorporated company agricultural-chemicals research institute in Toyota. The city library is provided with the data of the agricultural-chemicals research institute was gathered every month. From Showa 58 onward, a weather survey came to be performed also in the city office pollution disaster prevention division.

 Now, under jurisdiction of the Tokyo District Meteorological Observatories in the city of Tokyo, observation is performed at observatories of 13, such as Ogouchi, Ohme, Haneda, Hachijo-jima and Miyake-jima besides the meteorological observatory of Chiyoda-ku. As an area nearest to Hino, the weather information bureau in the Hachioji city office is observing officially.

 In the fourth junior high school of the Hachioji city, regular observation was started by Mr. Hiromasa Harashima's instruction in Hachioji in May, Showa 32. From April, Showa 42, the business as a Hachioji observatory was entrusted from the Meteorological Agency, and it was taken over to the Hachioji city office from it in October, Showa 58. The observation record is exact, and also when it investigates the weather of Hino, it is that it is consulted very much.

 Also in the natural clause of the periodical "Hino-shi-situsi-hen Ⅰ" published in March this year, comparison and analysis are conducted using the data for the past ten years of three areas of an agricultural-chemicals research institute, the Hachioji weather information bureau, and the Tokyo District Meteorological Observatories. Since three areas are the center of Tokyo and a neighboring part, there is hardly difference in weather. However, if it compares finely, the center of Tokyo will show the feature of a little oceanic climate, and it will be subject to the influence of urbanization. On the other hand, it turns out that Hachioji shows the feature of the climate of a basin. Although the cold of winter of Hino is severe compared with the center of Tokyo and it gets a little hot in response to the influence of the climate of inland nature in summer, it becomes a little cool at night.

  

 Thus, climates differ delicately in response to various influences, such as geographical feature. Therefore, it is increasingly important from now on to continue performing observation record in the area which is exact and does not have fault.