Umkehr Measurements at Tallahassee

Abstract

For a sample of 59 Umkehr measurements at Tallahassee, the N values are positively correlated with total amount of ozone at all zenith angles, and the normalized N values are positively correlated with the total amounts for the smaller zenith angles and negatively correlated for the larger zenith angles. If the Umkehr curves are expanded in terms of their empirical orthogonal functions, the expansion coefficients appear to have some predictive value for the coefficient of the first empirical orthogonal function describing the ozone distribution between 0 and 26 km. This coefficient in turn explains about 50% of the ozone variance.