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Temperature Correction of the Vertical Ozone Distribution Retrieval at the Siberian Lidar Station Using the MetOp and Aura Data
oleh: Sergey Dolgii, Alexey A. Nevzorov, Alexey V. Nevzorov, Yurii Gridnev, Olga Kharchenko
Format: | Article |
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Diterbitkan: | MDPI AG 2020-10-01 |
Deskripsi
The purpose of the work is to study the influence of temperature correction on ozone vertical distribution (OVD) in the upper troposphere–stratosphere in the altitude range~(5–45) km, using differential absorption lidar (DIAL), operating at the sensing wavelengths 299/341 nm and 308/353 nm. We analyze the results of lidar measurements, obtained using meteorological data from MLS/Aura and IASI/MetOp satellites and temperature model, at the wavelengths of 299/341 nm and 308/353 nm in 2018 at Siberian Lidar Station (SLS) of Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences. To estimate how the temperature correction of absorption cross-sections influences the OVD retrieval from lidar measurements, we calculated the deviations of the difference between two profiles, retrieved using satellite- and model-based temperatures. Two temperature seasons were singled out to analyze how real temperature influences the retrieved OVD profiles. In the stratosphere, when satellite-derived temperature and model are used for retrieval, the deviations may reach absolute values of ozone concentration in the range from −0.97 × 10<sup>12</sup> molecules × cm<sup>−3</sup> at 19.7 km to 1.05 × 10<sup>12</sup> molecules × cm<sup>−3</sup> at 25.3 km during winter–spring season, and from −0.17 × 10<sup>12</sup> molecules × cm<sup>−3</sup> at height of 17.4 km to 0.27 × 10<sup>12</sup> molecules × cm<sup>−3</sup> at 40 km in summer–fall period. In the troposphere, when satellite-derived temperature is used in the retrieval, the deviations may reach absolute values of ozone concentration in the range from −1.95 × 10<sup>12</sup> molecules × cm<sup>−3</sup> at 18.6 km to 1.23 × 10<sup>12</sup> molecules × cm<sup>−3</sup> at 18.2 km during winter–spring season, and from −0.15 × 10<sup>12</sup> molecules × cm<sup>−3</sup> at height of 11.4 km to 0.3 × 10<sup>12</sup> molecules × cm<sup>−3</sup> at 8 km during summer–fall season.