Solar Cycle Variability in New Merge Satellite Ozone Datasets

Abstract:

Studies using coupled chemistry climate model simulations of the solar cycle in the ozone field reveal agreement with the observed “double-peaked” ozone anomaly in the original satellite observations represented by SBUV(/2), HALOE and SAGE datasets. The motivation of our analysis is to examine whether the solar signal in the last generation of reanalyzed datasets (i.e. MERRA and ERA-INTERIM) is consistent with the observed double-peaked ozone anomaly extracted from satellite measurements.

Since an analysis of the solar cycle response requires long-term and temporal homogeneous time series of the ozone profile and no single satellite instrument has covered the entire period since 1984, satellite measurements in our study are represented by new merged satellite ozone datasets, i.e. GOZCARDS, SBUV MOD and SWOOSH datasets. The results of the presented study are based on the attribution analysis using multiple nonlinear techniques besides traditional linear approach based on the multiple linear models. The study results are supplemented by a frequency analysis using the pseudo-2D wavelet transform algorithms.