Ground-based spectrometric measurements of vertical distribution and column abundance of NO2 at Zvenigorod, Russia

Aleksandr N. Gruzdev; Aleksandr S. Elokhov

doi:10.1117/12.619837

12 May 2005 Ground-based spectrometric measurements of vertical distribution and column abundance of NO₂ at Zvenigorod, Russia

Aleksandr N. Gruzdev, Aleksandr S. Elokhov

Author Affiliations +

Proceedings Volume 5832, Optical Technologies for Atmospheric, Ocean, and Environmental Studies; (2005) https://doi.org/10.1117/12.619837
Event: Optical Technologies for Atmospheric, Ocean, and Environmental Studies, 2004, Beijing, China

Abstract

Results of measurements of vertical distribution and column abundance of NO₂ at Zvenigorod Research Station of the Institute of Atmospheric Physics since 1990 are presented. Measurements are done during morning and evening twilight at solar zenith angles 84-96 with a zenith-viewing spectrophotometer in spectral range 435-450 nm. A vertical distribution of NO₂ constituted by NO₂ abundances in 5 km thick layers and in the thin near-surface layer is retrieved as a solution of an inverse problem using Chahine method. The column NO₂ abundance is obtained as a sum of layer abundances. Random errors of retrieved NO₂ profiles are estimated with the help of a special statistical method based on randomization of measured slant column abundances. Measurements show that stratospheric NO₂ is a subject to diurnal day-to-day intra-seasonal annual and interannual variations. A linear negative trend in the stratosphere column NO₂ abundance has also been estimated. The NO₂ abundance in the lower troposphere is strongly affected by pollution episodes. Regular variations and statistical characteristics of the NO₂ abundance in the near-surface layer have been determined.

Citation Download Citation

Aleksandr N. Gruzdev and Aleksandr S. Elokhov "Ground-based spectrometric measurements of vertical distribution and column abundance of NO₂ at Zvenigorod, Russia", Proc. SPIE 5832, Optical Technologies for Atmospheric, Ocean, and Environmental Studies, (12 May 2005); https://doi.org/10.1117/12.619837

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