Paart two of my musings. …
So what is there about volcanoes that has to be a constant for all of them?
Volcanoes are slightly different to earthquake epicentres. Earthquakes occur almost as frequently as everything else to do with geo-phenomena. But volcanoes stand out as flags. They have grown into shape.
For reasons yet to be discovered they fall asleep. Sometimes they wake to periods of constant eruption, sometimes (more usually) to sporadic events. But always, they have this “long period event” that MUST be related to the winds that drive them.
It stands to reason that given their need for long period events to arouse them, they must be on some sort of "ley-line" with something. As far as I am convinced and concerned that something has to be the weather.
It also seems a constant that weather affecting them must be easily investigated. And we know all the angles for that.
Even if we didn't we know the times for the eruptions and can back track to the weather all over the earth for those eruptions.
That is called reanalysis. And the archives for most of such stuff are already on the servers of some countries, most conspicuously the USA. Working with just their output gives us the weather at any time for most of half a century covering half a continent.
Canadian resources will at a price supply the same information covering the other half and so will the Met Office for the North Atlantic and north Western Europe.
That should be more than ample. In fact the sea Surface pressures are available for the North Atlantic covered by Met Office charts available from the servers of other countries.
Times of eruption of most volcanoes are archived online at the Smithsonian servers. I just don't happen to have the data to hand and am not online to get it at the moment. (Something to do with the BBC and me not seeing eye to eye about freedom of information and paying an head tax for something I don't want.)