Absorption cross-sections of Ozone in the ultraviolet and visible spectral regions – Status report 2015

Johannes Orphal (1) , Johannes Staehelin (2) , Johanna Tamminen (3) , Geir Braathen (4) , Marie-Renée de Backer (5) , Alkiviadis Bais (6) , Dimitris Balis (6) , Alain Barbe (5) , Pawan K. Bhartia (7) , Manfred Birk (8) , James W. Burkholder (9) , Kelly V. Chance (10) , Thomas Von Clarmann (1) , Anthony Cox (11) , Doug Degenstein (12) , Robert Evans (9) , Jean-Marie Flaud (13) , David Flittner (14) , Sophie Godin-Beekmann (15) , Viktor Gorshelev (16) , Aline Gratien (13) , Edward Hare (17) , Christof Janssen (18) , Erkki Kyrölä (3) , Thomas Mcelroy (1) , Richard Mcpeters (7) , Maud Pastel (15) , Michael Petersen (19) , Irina Petropavlovskikh (9) , Benedicte Picquet-Varrault (13) , Michael Pitts (14) , Gordon Labow (7) , Maud Rotger-Languereau (5) , Thierry Leblanc (20) , Christophe Lerot (21) , Xiong Liu (10) , Philippe Moussay (19) , Alberto Redondas (22) , Michel van Roozendaël (21) , Stanley P. Sander (20) , Matthias Schneider (1) , Anna Serdyuchenko (16) , Pepijn J. Veefkind (23) , Joële Viallon (19) , Camille Viatte (24) , Georg Wagner (8) , Mark Weber (25) , Robert I. Wielgosz (19) , Claus Zehner (26)

1 IMK - Institute for Meteorology and Climate Research
2 ETH Zürich - Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich]
3 FMI - Finnish Meteorological Institute
4 WMO - World Meteorological Organization
5 GSMA - Groupe de spectrométrie moléculaire et atmosphérique
6 Laboratory of Atmospheric Physics [Thessaloniki]
7 GSFC - NASA Goddard Space Flight Center
8 DLR - German Aerospace Center
9 CIRES - Cooperative Institute for Research in Environmental Sciences
10 CfA - Harvard-Smithsonian Center for Astrophysics
11 CAM - University of Cambridge [UK]
12 ISAS - Institute of Space and Atmospheric Studies [Saskatoon]
13 LISA (UMR_7583) - Laboratoire Interuniversitaire des Systèmes Atmosphériques
14 LaRC - NASA Langley Research Center [Hampton]
15 STRATO - LATMOS
16 University of Bremen
17 Environment and Climate Change Canada
18 LERMA - Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique
19 BIPM - Bureau International des Poids et Mesures
20 JPL - Jet Propulsion Laboratory
21 BIRA-IASB - Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique
22 AEMet - Agencia Estatal de Meteorología
23 KNMI - Royal Netherlands Meteorological Institute
24 CALTECH - California Institute of Technology
25 IUP - Institute of Environmental Physics [Bremen]
26 ESRIN - European Space Research Institute

The activity “Absorption Cross-Sections of Ozone” (ACSO) started in 2008 as a joint initiative of the International Ozone Commission (IO3C), the World Meteorological Organization (WMO) and the IGACO (“Integrated Global Atmospheric Chemistry Observations”) O3/UV subgroup to study, evaluate, and recommend the most suitable ozone absorption cross-section laboratory data to be used in atmospheric ozone measurements. The evaluation was basically restricted to ozone absorption cross-sections in the UV range with particular focus on the Huggins band. Up until now, the data of Bass and Paur published in 1985 (BP, 1985) are still officially recommended for such measurements. During the last decade it became obvious that BP (1985) cross-section data have deficits for use in advanced space-borne ozone measurements. At the same time, it was recognized that the origin of systematic differences in ground-based measurements of ozone required further investigation, in particular whether the BP (1985) cross-section data might contribute to these differences. In ACSO, different sets of laboratory ozone absorption cross-section data (including their dependence on temperature) of the group of Reims (France) and , 1992, 1995, abbreviated as BDM, 1995) and those of [8], and [7], (abbreviated as SER, 2014) were examined for use in atmospheric ozone measurements in the Huggins band. In conclusion, ACSO recommends: - The spectroscopic data of BP (1985) should no longer be used for retrieval of atmospheric ozone measurements. - For retrieval of ground-based instruments of total ozone and ozone profile measurements by the Umkehr method performed by Brewer and Dobson instruments data of SER (2014) are recommended to be used. When SER (2014) is used, the difference between total ozone measurements of Brewer and Dobson instruments are very small and the difference between Dobson measurements at AD and CD wavelength pairs are diminished. - For ground-based Light Detection and Ranging (LIDAR) measurements the use of BDM (1995) or SER (2014) is recommended. - For satellite retrieval the presently widely used data of BDM (1995) should be used because SER (2014) seems less suitable for retrievals that use wavelengths close to 300 nm due to a deficiency in the signal-to-noise ratio in the SER (2014) dataset.

Domains: Atmospheric and Oceanic Physics [physics.ao-ph]; Ocean, Atmosphere

Johannes Orphal, Johannes Staehelin, Johanna Tamminen, Geir Braathen, Marie-Renée de Backer, et al.. Absorption cross-sections of Ozone in the ultraviolet and visible spectral regions – Status report 2015. Journal of Molecular Spectroscopy, 2016, 327, pp.105-121. ⟨10.1016/j.jms.2016.07.007⟩. ⟨insu-01349533⟩