The mention of global cooling makes me wonder if we (as in the human kind) will start blowing stuff up when we get desperate about reversing the effects of climate change... Because the way things are going you know we'll blast through 2 degrees, 4 degrees, etc, before 2100.
The VolcanoCafe blog has some detailed information on this period. <a href="https://www.volcanocafe.org/1809-the-missing-volcano/" rel="nofollow">https://www.volcanocafe.org/1809-the-missing-volcano/</a><p>I've not seen anyone suggest that this was an earlier, but less-violent (somewhat less emissive) Tambora eruption. The character of the gasses sounds similar. Seems there were few reliable eyewitnesses in the area.
I couldn't find how many core samples showed this event or how far away they were from each other.<p>Maybe there was a kind of ice sheet "earthquake", where one layer of ice slid underneath of another sheet, causing a double hit of the 1815 eruption when cored?