Evidence of the El Chichón stratospheric volcanic cloud in Northern Greece

Abstract

The northern edge of the remnants of the volcanic SO₂ thrown into the stratosphere by El Chichón was traced at Thessaloniki (41 deg. north) since early summer, 1982. The evidence is based on routine measurements of columnar S0₂ made with the Brewer Mark II spectrophotometer outside the city of Thessaloniki.. Allowing for the contribution of tropospheric pollution
to the columnar S0₂ it is expected that about 2 m-atm-cm of columnar S0₂ may be attributed to the stratospheric load of volcanic origin.