The use of QBO, ENSO, and NAO perturbations in the evaluation of GOME-2 MetOp A total ozone measurements

• Published in: Atmospheric Measurement Techniques
• Main Authors: K. Eleftheratos, C. S. Zerefos, D. S. Balis, M.-E. Koukouli, J. Kapsomenakis, D. G. Loyola, P. Valks, M. Coldewey-Egbers, C. Lerot, S. M. Frith, A. S. Haslerud, I. S. A. Isaksen, S. Hassinen
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2019
• Subjects: Environmental engineering; TA170-171; Earthwork. Foundations; TA715-787; North Atlantic; North Atlantic oscillation
• Online Access: https://doi.org/10.5194/amt-12-987-2019; https://doaj.org/article/74f551669bc341259df1920038d17bf2

In this work we present evidence that quasi-cyclical perturbations in total ozone (quasi-biennial oscillation – QBO, El Niño–Southern Oscillation – ENSO, and North Atlantic Oscillation – NAO) can be used as independent proxies in evaluating Global Ozone Monitoring Experiment (GOME) 2 aboard MetOp A (GOME-2A) satellite total ozone data, using ground-based (GB) measurements, other satellite data, and chemical transport model calculations. The analysis is performed in the frame of the validation strategy on longer time scales within the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT) Satellite Application Facility on Atmospheric Composition Monitoring (AC SAF) project, covering the period 2007–2016. Comparison of GOME-2A total ozone with ground observations shows mean differences of about <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>-</mo><mn mathvariant="normal">0.7</mn><mo>±</mo><mn mathvariant="normal">1.4</mn></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="52pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="dba8c66e297c0601baccc6ab115a0086"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="amt-12-987-2019-ie00001.svg" width="52pt" height="10pt" src="amt-12-987-2019-ie00001.png"/></svg:svg> % in the tropics (0–30 ∘ ), about <math xmlns="http://www.w3.org/1998/Math/MathML" id="M3" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>+</mo><mn mathvariant="normal">0.1</mn><mo>±</mo><mn mathvariant="normal">2.1</mn></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="52pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="63d75ddfa7d430e7ceb7a4033cb0075f"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="amt-12-987-2019-ie00002.svg" ...