Mt. Fuji and the Tokyo Tower were observed daily from the Seikei Meteorological Observatory in Tokyo for the past 30 years. The observatory recorded whether each object could be seen at 9:00 a.m. Mt. Fuji and the Tokyo Tower could be seen, on average, 43 days yr and 69 days yr, respectively, from 1963 to 1972. From 1967 to 1972, the Tokyo Tower was visible fewer days than Mt. Fuji, even though Mt. Fuji is farther from the observatory. In contrast, after 1973, Mt Fuji could be seen about 70 days yr on average, and the number of days the tower was visible increased to 159 days yr in 1993. The data obtained from such unique and simple observations bear a significant relationship to air pollution around the Tokyo megalopolis.
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| http://dx.doi.org/10.1080/10473289.1998.10463724 | DOI Listing |
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