I saw a news clip yesterday saying that SO2 levels were now being reported as high!. There may well be temperature consequences..../

That's not what the experts are saying

https://twitter.com/smitchell_sci/status/1482652023799664642

That's however an estimate from the 16th. I haven't seen anything but if the said news report has more updated information then it could be.

This from the BBC - 

A volcanic eruption in Tonga that triggered a tsunami was hundreds of times more powerful than the atomic bomb the US dropped on Hiroshima during World War Two, Nasa says.

see -

https://www.bbc.co.uk/news/world-asia-60106981  

I've not seen any confirmation of SO2 levels being 'high' but I have seen reports of the explosive force being much greater than first reported.

I'm aware of the particularly important SO2 connection related to global temperature change but, can anyone hazard a guess of how important is the particulate matter quantity, along with the height this matter reaches?

 

I remember the great volcano in the Philippines in 1991 had made most of the N Hemisphere very cold except the UK with many places in the Middle East had 0 to 7C maximums, like Nicosia 4C, Cairo and Alexandria 5C, Luxor 7C, Tel Aviv 5C, Jerusalem and Amman subzero with 1.2m of snow depth in my cousin place in Amman, 6C in Riyadh, 7C in Kuwait, 16C in Jeddah and Mecca and many places in EU was very cold only the UK stay very mild snow free winter with temperatures 7-13C which was the warmest place in N Hemisphere for winter 1991/1992.

Yes and a similar pattern now esp with SE Europe and middle east so cold - the question is why is the UK so much warmer or the warmest place in n hemisphere?