Sixteen Years of Measurements of Ozone over Athens, Greece with a Brewer Spectrophotometer

Sixteen years (July 2003–July 2019) of ground-based measurements of total ozone in the urban environment of Athens, Greece, are analyzed in this work. Measurements were acquired with a single Brewer monochromator operating on the roof of the Biomedical Research Foundation of the Academy of Athens si...

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Bibliographic Details
Published in:Oxygen
Main Authors: Kostas Eleftheratos, Dimitra Kouklaki, Christos Zerefos
Format: Text
Language:English
Published: Multidisciplinary Digital Publishing Institute 2021
Subjects:
ozone
variability
measurements
Brewer spectrophotometer
satellite data
tropopause pressure
North Atlantic
North Atlantic oscillation
Online Access:https://doi.org/10.3390/oxygen1010005
Description
Summary:Sixteen years (July 2003–July 2019) of ground-based measurements of total ozone in the urban environment of Athens, Greece, are analyzed in this work. Measurements were acquired with a single Brewer monochromator operating on the roof of the Biomedical Research Foundation of the Academy of Athens since July 2003. We estimate a 16-year climatological mean of total ozone in Athens of about 322 DU, with no significant change since 2003. Ozone data from the Brewer spectrophotometer were compared with TOMS, OMI, and GOME-2A satellite retrievals. The results reveal excellent correlations between the ground-based and satellite ozone measurements greater than 0.9. The variability of total ozone over Athens related to the seasonal cycle, the quasi biennial oscillation (QBO), the El Nino Southern Oscillation (ENSO), the North Atlantic Oscillation (NAO), the 11-year solar cycle, and tropopause pressure variability is presented.

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