Vertical profile variations of ozone in lower stratosphere in Indonesia and influence to upper troposphere ozone based on satellite

Abstract

This study examined the vertical profile and ozone variation in the lower stratosphere in Indonesia using AQUA/AIRS and AURA/MLS satellite data. Ozone in the stratosphere as an important component in atmospheric chemistry as well as radiation and climate becomes important to learn. Seasonal vertical profiles, time-varying vertical profiles, ozone seasonal variations at pressures of 100 hPa and 70 hPa, ozone time series at pressures of 100 hPa and 70 hPa from 2002 to 2016, average zonal variation (influence latitude) ozone concentrations in Indonesia, and the comparison of the vertical profiles of ozone, HCl, and N2O in the lower stratosphere layer in Indonesia from MLS/AURA satellite data have been done to understand the variation of ozone in the lower stratosphere in Indonesia. The results show that the vertical ozone profile increased from the tropopause then the lower stratosphere to the middle stratosphere with the highest concentration of up to 9 ppmv. The monthly variation of ozone climatology at 70 hPa shows a pattern with a maximum peak in August while at a pressure of 100 hPa it indicates the presence of two maximum peaks in June and September. Time series of ozone at 100 hPa and 70 hPa from 2002 to 2016 show that ozone concentration tended to be constant with very small concentration increase occurring at 70 hPa and 100 hPa. Zonal variation shows the lowest ozone concentration at zero degrees latitude compared to other latitudes, and the vertical profile of ozone has the same pattern as HCl while it is different from N2O. Vertical-time series cross section of ozone and Potential Vorticity (PV) in upper troposphere show influenced of stratospheric air into upper tropospheric air which showed by higher ozone and PV value and can reach until pressure 150 hPa occurred in the same season.