All that effort and yet it isn't enough isn't the problem. …
This is some of the stuff that the Smithsonian Institution archives:
Originally posted by Global Volcanism Program:
20 May-26 May 2009
New Activity/Unrest: | Karangetang [Api Siau], Siau I | Reventador, Ecuador | Slamet, Central Java (Indonesia)
Ongoing Activity: | Barren Island, Andaman Is | Batu Tara, Komba Island (Indonesia) | Chaitén, Southern Chile | Colima, México | Dukono, Halmahera | Ebeko, Paramushir Island | Fuego, Guatemala | Kilauea, Hawaii (USA) | Llaima, Central Chile | Rabaul, New Britain | Redoubt, Southwestern Alaska | Sakura-jima, Kyushu | Shiveluch, Central Kamchatka (Russia) | Soufrière Hills, Montserrat | Suwanose-jima, Ryukyu Islands (Japan) | Tungurahua, Ecuador | Ubinas, Perú | Veniaminof, Alaska Peninsula
Leaving aside that if a passing pilot misses something when he is drinking his coffee or easing out of a nosedive or whatever, more than one more volcanic eruption will be missed this week…
The fact is that the important volcanoes are the ones that are deep under the sea.
Volcanoes are the action of cyanobacteria on carbonates and sulphates deep under ground. Their product become high pressure reactants that trigger every so often according to the growing conditions that suit the bacteria best and the as yet unknown conditions that rigger the impulse to vent.
When they blow off in air, the gas takes flight to the outermost parts of the atmosphere and tend to diffuse their heat into the paths of stars.
When deep sea vents blow, they heat the whole earth, the currents in the oceans are changed and a major impact on the various sea surface weather systems takes place.
What happens next might be worth theorising upon. There are all sorts of could be's that might take place.