This is complicated by the fact that the two volcanic eruptions occurred at the same time as ENSO warm events, so that the warm events appear subdued and the volcanic coolings are masked.
(This; is complicated; by the fact that the two volcanic eruptions occurred at the same time as ENSO warm events) (the two volcanic eruptions; occurred; T:at the same time as ENSO warm events) (the warm events; appear; ) (the warm events; subdued; ) (the volcanic coolings; are masked; )
This the two volcanic eruptions the warm events the warm events the volcanic coolings
is complicated occurred appear subdued are masked
by the fact that the two volcanic eruptions occurred at the same time as ENSO warm events
T:at the same time as ENSO warm events