Fussen, D., Dekemper, E., Errera, Q., Franssens, G., Mateshvili, N., Pieroux, D., and Vanhellemont, F.: The ALTIUS mission, Atmos. Meas. Tech. Discuss., doi:10.5194/amt-2016-213, 2016.

Errera, Q., Ceccherini, S., Christophe, Y., Chabrillat, S., Hegglin, M. I., Lambert, A., Ménard, R., Raspollini, P., Skachko, S., van Weele, M., and Walker, K. A.: Harmonisation and diagnostics of MIPAS ESA CH4 and N2O profiles using data assimilation, Atmos. Meas. Tech., 9, 5895-5909, doi:10.5194/amt-9-5895-2016, 2016.

Skachko, S., Ménard, R., Errera, Q., Christophe, Y., and Chabrillat, S.: EnKF and 4D-Var data assimilation with chemical transport model BASCOE (version 05.06), Geosci. Model Dev., 9, 2893-2908, doi:10.5194/gmd-9-2893-2016, 2016.

Huijnen, V., Flemming, J., Chabrillat, S., Errera, Q., Christophe, Y., Blechschmidt, A.-M., Richter, A., and Eskes, H.: C-IFS-CB05-BASCOE: stratospheric chemistry in the Integrated Forecasting System of ECMWF, Geosci. Model Dev., 9, 3071-3091, doi:10.5194/gmd-9-3071-2016, 2016.

Lefever, K., van der A, R., Baier, F., Christophe, Y., Errera, Q., Eskes, H., Flemming, J., Inness, A., Jones, L., Lambert, J.-C., Langerock, B., Schultz, M. G., Stein, O., Wagner, A., and Chabrillat, S.: Copernicus stratospheric ozone service, 2009–2012: validation, system intercomparison and roles of input data sets, Atmos. Chem. Phys., 15, 2269-2293, doi:10.5194/acp-15-2269-2015, 2015.

Skachko, S., Errera, Q., Ménard, R., Christophe, Y., and Chabrillat, S.: Comparison of the ensemble Kalman filter and 4D-Var assimilation methods using a stratospheric tracer transport model, Geosci. Model Dev., 7, 1451-1465, doi:10.5194/gmd-7-1451-2014, 2014.

Inness, A., Baier, F., Benedetti, A., Bouarar, I., Chabrillat, S., Clark, H., Clerbaux, C., Coheur, P., Engelen, R. J., Errera, Q., Flemming, J., George, M., Granier, C., Hadji-Lazaro, J., Huijnen, V., Hurtmans, D., Jones, L., Kaiser, J. W., Kapsomenakis, J., Lefever, K., Leitão, J., Razinger, M., Richter, A., Schultz, M. G., Simmons, A. J., Suttie, M., Stein, O., Thépaut, J.-N., Thouret, V., Vrekoussis, M., Zerefos, C., and the MACC team, The MACC reanalysis: an 8 yr data set of atmospheric composition, Atmos. Chem. Phys., 13, 4073-4109, doi:10.5194/acp-13-4073-2013, 2013.

Errera, Q. and Ménard, R.: Technical Note: Spectral representation of spatial correlations in variational assimilation with grid point models and application to the Belgian Assimilation System for Chemical Observations (BASCOE), Atmos. Chem. Phys., 12, 10015-10031, doi:10.5194/acp-12-10015-2012, 2012.

Muncaster, R., Bourqui, M. S., Chabrillat, S., Viscardy, S., Melo, S., and Charbonneau, P., Modelling the Effects of (Short-Term) Solar Variability on Stratospheric Chemistry, Atmospheric Chemistry and Physics12, 7707-7724 (2012).

Theys, N., Van Roozendael, M., Hendrick, F., Yang, X., De Smedt, I., Richter, A., Begoin, M., Errera, Q., Johnston, P. V., Kreher, K. and De Mazière, M., Global observations of tropospheric BrO columns using GOME-2 satellite data, Atmos. Chem. Phys. 11, 1791-1811 (2011)

Lahoz, W. A., Errera, Q., Viscardy, S., and Manney G. L., The 2009 stratospheric major warming described from synergistic use of BASCOE water vapour analyses and MLS observations, Atmos. Chem. Phys.11, 4689-4703 (2011).

Viscardy, S., Errera, Q., Christophe, Y., Chabrillat, S., and Lambert, J.-C., Evaluation of ozone analyses from UARS MLS assimilation by BASCOE between 1992 and 1997, JSTARS3, 190-202 (2010).

Errera, Q., Viscardy, S., and Baier, F., BASCOE ozone and Cly analyses provided in the framework of PROMOTE, in ESA Special Publication SP-676: Proceedings of Atmospheric Science Conference (2009).

Thornton, H. E., Jackson, D. R., Bekki, S., Bormann, N., Errera, Q., Geer, A. J., Lahoz, W. L., and Rhalmili, S., The ASSET intercomparison of stratosphere and lower mesosphere humidity analyses, Atmos. Chem. Phys., 9 995-116 (2009).

Errera, Q., Daerden, F., Chabrillat, S., Lambert, J. C., Lahoz, W. A., Viscardy, S., Bonjean, S., and Fonteyn, D., 4D-Var Assimilation of MIPAS chemical observations: ozone and nitrogen dioxide analyses, Atmos. Chem. Phys., 8, 6169-6187 (2008).

Errera, Q., Bonjean, S., Chabrillat, S., Daerden, F., and Viscardy, S., BASCOE assimilation of ozone and nitrogen dioxide observed by MIPAS and GOMOS: Comparison between the two sets of analyses, in ESA Special Publication SP-636: Proceedings of Envisat Symposium 2007 (2007).

Daerden, F., Larsen, N., Chabrillat, S., Errera, Q., Bonjean, S., Fonteyn, D., Hoppel, K., and Fromm, M., A 3D-CTM with detailed online PSC-microphysics: analysis of the Antarctic winter by comparison with satellite observations, Atmos. Chem. Phys., 7, 1755-1772 (2007).

Vigouroux, C., de Mazière, M., Errera, Q., Chabrillat, S., Mahieu, E., Duchatelet, P., Wood, S., Smale, D., Mikuteit, S., Blumenstock, T., Hase, F., and Jones, N., Comparisons between ground-based FTIR and MIPAS N2O and HNO3 profiles before and after assimilation in BASCOE, Atmos. Chem. Phys., 7, 377-396 (2007).

Geer, A. J., Lahoz, W. A., Bekki, S., Bormann, N., Errera, Q., Eskes, H. J., Fonteyn, D., Jackson, D. R., Juckes, M. N., Massart, S., Peuch, V.-H., Rharmili, S., and Segers, A., The ASSET intercomparison of ozone analyses: method and first results, Atmos. Chem. Phys., 6, 5445-5474 (2006).

Fonteyn, D., Lahoz, W., Geer, A., Dethof, A., Wargan, K., Stajner, L., Pawson, S., 690 Rood, R., Bonjean, S., Chabrillat, S., Daerden, F., and Errera, Q., MIPAS ozone assimilation, in ESA Special Publication SP-572: Second Workshop on the Atmospheric Chemistry Validation of ENVISAT (ACVE\u20132) (2004).

Fonteyn, D., Bonjean, S., Chabrillat, S., Daerden, F., and Errera, Q., 4D-VAR chemical data assimilation of ENVISAT chemical products (BASCOE): Validation support issues, in ESA Special Publication SP-531 : Proceedings of First Envisat Validation Workshop (2002).

Errera, Q. and Fonteyn, D., Four-dimensional variational chemical assimilation of CRISTA stratospheric measurements, J. Geophys. Res., 106, 12,253-12, 265 (2001).