A cross-correlation study for time-lags of +/-5 yrs between eleven gro
und based ozone stations (1957-1985) for phi = 40 degrees N-75 degrees
N and lambda = 30 degrees E-114 degrees W and five volcanic emissivit
y indices has shown their close connection: significant correlations w
ell above 90% were obtained. Intepretation of these positive/negative
correlations (tau) was based on the global wind circulation (aided als
o by a 2-D, 3-D representation between phi, lambda, tau), and the type
s of volcanic aerosols leading to heterogeneous chemical reactions wit
h ozone.