Comparison of ozone vertical profiles in the upper troposphere–stratosphere measured over Tomsk, Russia (56.5° N, 85.0° E) with DIAL, MLS, and IASI

Abstract

ABSTRACT Laser ranging methods employing light detection and ranging (LiDAR) technology are widely used for studying the atmosphere and monitoring its state. The purpose of this work is to measure the ozone vertical distribution (OVD) in the upper troposphere–stratosphere by differential absorption LiDAR (DIAL) at 299–341 nm and 308–353 nm and to compare the results with satellite data. А LiDAR complex for measuring the OVD in the altitude range approximately 5–45 km has been created. Here, we analyse the results of ozone LiDAR measurements at wavelengths of 299–341 nm and 308–353 nm between 2017 and 2018 at Siberian LiDAR Station (SLS) and compare them with satellite (Microwave Limb Sounder (MLS)/Aura and Infrared Atmospheric Sounding Interferometer (IASI)/MetOp) measurements of OVD. The retrieved LiDAR OVD profiles in the upper troposphere–stratosphere in comparison with MLS/Aura and IASI/MetOp profiles, as well as the stitched OVD profile in comparison with the mid-latitude Krueger model, confirm the prospects of using the pairs of ozone sounding wavelengths 299–341 nm and 308–353 nm. The average relative difference between LiDAR and MLS/Aura measurements is negative in the altitude range 16–38 km and attains –49.81% at 38 km, and also, the average relative difference between LiDAR and IASI/MetOp measurements is positive in the altitude ranges 6 and 7.40 to 18 km, where it attains 43.68% at 16.80 km, and is negative in the altitude range 6–7.30 km, where it attains – 43.86% at 6.20 km.