Theoretical validation of ground-based microwave ozone observations
| Autor: | J. P. Parisot, J. Brillet, P. Ricaud, J. de La Noe, M. Pirre, Guy Brasseur |
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| Přispěvatelé: | National Center for Atmospheric Research [Boulder] (NCAR), Laboratoire de physique et chimie de l'environnement (LPCE), Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Atmospheric Science
Ozone 010504 meteorology & atmospheric sciences Meteorology 010502 geochemistry & geophysics Atmospheric sciences 01 natural sciences Mesosphere chemistry.chemical_compound Earth and Planetary Sciences (miscellaneous) medicine Radiative transfer lcsh:Science Stratosphere 0105 earth and related environmental sciences Oscillation lcsh:QC801-809 Diurnal temperature variation Geology Astronomy and Astrophysics Seasonality medicine.disease lcsh:QC1-999 lcsh:Geophysics. Cosmic physics Amplitude chemistry 13. Climate action Space and Planetary Science [SDU]Sciences of the Universe [physics] Environmental science lcsh:Q lcsh:Physics |
| Zdroj: | Annales Geophysicae Annales Geophysicae, European Geosciences Union, 1994, 12 (7), pp.664-673. ⟨10.1007/s00585-994-0664-5⟩ Annales Geophysicae, Vol 12, Pp 664-673 (1994) Annales Geophysicae, Vol 12, Iss 7, Pp 664-673 (0000) |
| ISSN: | 1432-0576 0992-7689 |
| Popis: | Ground-based microwave measurements of the diurnal and seasonal variations of ozoneat 42±4.5 and 55±8 km are validated by comparing with results from a zero-dimensional photochemical model and a two-dimensional (2D) chemical/radiative/dynamical model, respectively. O3 diurnal amplitudes measured in Bordeaux are shown to be in agreement with theory to within 5%. For the seasonal analysis of O3 variation, at 42±4.5 km, the 2D model underestimates the yearly averaged ozone concentration compared with the measurements. A double maximum oscillation (~3.5%) is measured in Bordeaux with an extended maximum in September and a maximum in February, whilst the 2D model predicts only a single large maximum (17%) in August and a pronounced minimum in January. Evidence suggests that dynamical transport causes the winter O3 maximum by propagation of planetary waves, phenomena which are not explicitly reproduced by the 2D model. At 55±8 km, the modeled yearly averaged O3 concentration is in very good agreement with the measured yearly average. A strong annual oscillation is both measured and modeled with differences in the amplitude shown to be exclusively linked to temperature fields. |
| Databáze: | OpenAIRE |
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