New annual temperature data shows no warming in Tokyo for 45 years… Hachijō-jima Island hasn’t warmed in 71 years! – Is it good?
Via P Gosselin above 1. January 2022
No warming in Tokyo in decades!
Via Kirye
and Pierre
The December 2021 mean temperature data from the Japan Meteorological Agency (JMA) for Tokyo and Hachijō-jima island in the Pacific Ocean are out and so let’s first look at the December trends:
Data sources: JMA
Since 1985, the average monthly temperature for December in Tokyo hasn’t changed since 1975.
The island of Hachijo-jima, located 287 km south of Tokyo, away from all heat island influences and urban sprawl, has also seen a flat mean temperature trend – since 1923!
Nothing unusual is happening at these two very different stations in December.
Average annual temperatures show no warming!
But that’s just a one-month trend. Now that December data is available, it is possible to update the annual temperature trends for these two stations.
First, we plot the JMA average annual temperature for Tokyo from 1994:
Data sources: JMA.
Here we see that the megalopolis has cooled moderately, thus defying the predictions of warming. Despite a lot of steel, asphalt and concrete, Tokyo is still cooling off.
It’s clear that something other than CO2 is driving the trend there.
Hachijo-jima
Move offshore to Tokyo’s island Hachijo-jima, away from all the effects of urban heat islands, we look at the latest mean annual temperatures since 1950.
Has it been warmed or cooled?
Data sources: JMA.
If we look closely at the graph, we see that there is something natural and cyclical behind the temperatures at the island in the Philippine Sea, but overall there has been no warming in over 70 years!
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