Hachijojima is a volcanic Japanese island some 287 kilometers south of Tokyo, to which it belongs. 7,522 people live on its 63 km2 of area.
What makes Hachijojima interesting climatically is its rural, non-urban features – in the middle of the ocean – making station siting there less prone to factors that could corrupt the data, such as airports, asphalt, concrete, steel, and other heat-sink-acting infrastructure.
Today we look at data from the Japan Meteorological Agency (JMA) going back almost 80 years.
Hearing all the claims about a rapidly warming world from the media, many readers would think that there must be warming happening there as well. The data have a surprise in store.
Summer
Now that summer has ended, we plot the latest data to see if summers have indeed been warming at this island.
As the above data show, there has been virtually no trend at all over the past 80 years. Warming? Still no sign of it at all.
Winter
Next, we look at the mean winter temperatures at this location since 1947:
Like summer, also winter has shown no long-term trend one way or the other. Where’s the bad climate change news here?
Annual
To round out the analysis and to summarize, we plot the annual mean temperature data recorded for Hachjojima:
Interestingly, the annual temperature behavior appears to follow a cyclic behavior that very much resembles some ocean-surface temperature cycles we see from around the globe, like the PDO or AMO.
Climate indeed changes, but what we see above it cannot be due to anything anthropogenic.
Read more at No Tricks Zone
When they do that we should point out their error instead of mimicking their error.
AGW is a theory about long term trends in global mean temperature. It cannot be tested under the geographical constraints described in this article. That a small island has been found with no temperature trends does not have an interpretation in terms of AGW.
Please see
https://tambonthongchai.com/2020/07/16/the-internal-variability-issue/
Yet proponents of AGW are quite happy to seize upon any positive spike in temperature, however local in time or space, as proof positive of their theory!
No ones there to hold a lit match under the Theomometer
The air temperature of small mid-ocean islands is determined by the temperature of the surrounding ocean surface. Usually a degree or two cooler than the water. The oceans are heated by sunlight shining directly into the water and cooled by surface radiation per Stefan-Boltzmann. CO2 is not involved either way. Oceans are 85% of the energy capturing medium of the planet. If the oceans are not warming then the planet is not warming.
Very easy to explain really, the Bureau of Meterology from Australia haven’t been there yet to “adjust” the temperatures