As urban expansion continues worldwide, it wouldn’t surprise anyone that cities would see a growing number of hot days as asphalt, concrete, steel, and automobiles act as heat sinks that absorb the summer sun’s energy, a phenomenon known as the urban heat island effect (UHI).
Indeed this has been the case for many German cities over the past decades. Though the climate in Europe has changed over the past 30 years, that change is likely due to natural cyclic pattern changes.
Tokyo not seeing hotter summer highs
But even with a stronger UHI and supposed climate warming, Japan’s sprawling megalopolis of Tokyo has not seen an increase in the number of hot days (days where the thermometer climb to 30°C or higher), as the following chart clearly depicts:
Clearly, the number of hot days has little to do with CO2 emissions.
Tokyo October not warming
Also, we’ve got the mean temperature data for October 2020 for Tokyo:
Above the chart shows that the mean October temperature in the city of Tokyo has not risen in almost 3 decades. In fact, it has trended downward a bit, though statistically insignificant.
So if anyone is claiming Tokyo is getting hotter days and hotter in general, then they either don’t know what they are talking about or they are misleading us.
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“Above the chart shows that the mean October temperature in the city of Tokyo has not risen in almost 3 decades. In fact, it has trended downward a bit, though statistically insignificant. So if anyone is claiming Tokyo is getting hotter days and hotter in general, then they either don’t know what they are talking about or they are misleading us”
Thank you, but I am not sure why this is an AGW issue.