Total Ozone Observations Made by Dobson Spectrophotometer at the Most SE Station in Europe the Last Twenty Years
Total ozone is closely connected with two crucial environmental problems: ozone depletion and global climate change. The Dobson spectrophotometer is the oldest measuring device (prototype) for total ozone observations in the atmosphere. The Dobson spectrophotometer No. 118 has been installed in Athens, Greece since 1989. We present a brief overview of the main activities of the instrument. According to the results of the intercomparison of the Athens Dobson spectrophotometer with World Standard Dobson Instruments, Dobson No. 118 is a reliable spectrophotometer and its measurements accurate and appropriate for further analysis. The comparison between Dobson measurements at Athens and all the available total ozone observations that have been performed using satellite-borne instrumentation revealed that it may be used as a ground-truth total ozone station for the validation of the satellite total ozone observations.
KeywordsTotal Ozone Solar Zenith Angle Ozone Content Total Ozone Content Wavelength Pair
- Alexandris D, Varotsos C, Kondratyev KY, Chronopoulos G (1999) On the altitude dependence of solar effective UV. Phys Chem Earth PT C 24:515–517Google Scholar
- Dobson GMB (1957a) Observers’ handbook for the ozone spectrophotometer. Ann Int Geophys Year 5:46–89Google Scholar
- Dobson GMB (1957b) Adjustment and calibration of the ozone spectrophotometer, ibid. V, Part I. Pergamon Press, London, pp 90–113Google Scholar
- Tzanis C, Christodoulakis J, Efstathiou M, Varotsos C (2009) Comparison of the Athens Dobson spectrophotometer with World Standard Instruments. Int J Remote Sens 30: 3943–3950Google Scholar
- Varotsos CA, Kondratyev KY, Cracknell AP (2000) New evidence for ozone depletion over Athens, Greece. Int J Remote Sens 21: 2951–2955Google Scholar