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Tokyo heat island effect| climate change Tokyo
It is said that heat island phenomenon is also a contributing factor to the increased occurrence of torrential rain in the urban area. In Tokyo, because of the global warming and the heat island phenomenon, the annual mean temperature has increased by about 3°C over the past 100 years.
The average temperature in Tokyo has risen much more dramatically since 1900 than the national and world averages — by 3 degrees Celsius (5 degrees Fahrenheit) in Tokyo, compared with 1 degree Celsius (2 degrees Fahrenheit) nationwide. The Tokyo Metropolitan Research Institute for Environmental Protection attributes 1 degree Celsius out of Tokyo’s 3-degree increase to climate change, and the remaining 2 degrees to “heat island” effect.
Asphalt roads and concrete buildings also absorb and retain heat, rather than reflecting it. The many high-rise buildings in Tokyo also block or weaken wind and air flow, which would otherwise naturally lower the air temperature.
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