Abstract
This paper introduces the technique of retrieving the profiles of vertical distribution of ozone considering temperature and aerosol correction in DIAL sounding of the atmosphere. The authors determine wavelengths, which are promising for measurements of ozone profiles in the upper troposphere–lower stratosphere. An ozone differential absorption lidar is designed for the measurements. The results of applying the developed technique to the retrieval of the vertical profiles of ozone considering temperature and aerosol correction in the altitude range 6–15 km in DIAL sounding of the atmosphere confirm the prospects of ozone sounding at selected wavelengths of 341 and 299 nm with the proposed lidar. The 2015 ozone profiles retrieved were compared with satellite IASI data and the Kruger model.
Highlights
Laser remote sounding techniques with the use of the lidar (Light Detection and Ranging) technology are widely used for the study and monitoring of the atmosphere
Among the techniques used for measuring the spatial distribution of the concentration of an atmospheric gas, the most sensitive is the differential absorption method (DIAL).The essence of the method is that radiation is transmitted in the atmosphere simultaneously at two wavelengths: one of them is on a strong absorption line or band of the gas to be measured and another is off the absorption line and is weakly absorbed in the atmosphere or not absorbed at all
The aims of this work are the development of an algorithm and program for vertical distribution of ozone (VDO) retrieval with temperature and aerosol correction; selection of the VDO sounding wavelengths; the design of an ozone lidar; and analysis of the measurement results, including the comparison between the ozone vertical profiles retrieved from the ground-based DIAL lidar system data and the profiles retrieved from IASI/MetOp data
Summary
Laser remote sounding techniques with the use of the lidar (Light Detection and Ranging) technology are widely used for the study and monitoring of the atmosphere. Among the techniques used for measuring the spatial distribution of the concentration of an atmospheric gas, the most sensitive is the differential absorption method (DIAL).The essence of the method is that radiation is transmitted in the atmosphere simultaneously at two wavelengths: one of them (λon ) is on a strong absorption line or band of the gas to be measured and another (λoff ) is off the absorption line and is weakly absorbed in the atmosphere or not absorbed at all. It allows data to be received on vertical distribution of ozone (VDO), which successfully supplement similar data received by in situ methods with the use of ozonesondes, rockets, or satellites (TOMS, SAGE-II, TERRA, MetOp, etc.). It should be noted that the profiles of IASI/MetOp-measured atmospheric ozone concentrations were earlier compared with the profiles measured in the troposphere with compact airborne lidars, ozone sondes, ground-based lidars, and Brewer–Dobson spectrophotometers [8,9,10]
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