Sergey Skachko

Research Scientist - Meteorological Data Assimilation

Contributing to Environment Canada's mandate to improve meteorological forecasts by improving the use of atmospheric observations in the global analysis system.

* Coupled ocean-atmosphere data assimilation system,

* Ocean data assimilation,

* Sea Surface Temperature (SST) analysis

Key publications

Skachko, S., Buehner, M., Laroche, S., Lapalme, E., Smith, G., Roy, F., Surcel-Colan, D., Bélanger, J.-M., and Garand, L.: Weakly coupled atmosphereocean data assimilation in the Canadian global prediction system (v1), Geosci. Model Dev., 12, 50975112,, 2019.


Errera, Q., Chabrillat, S., Christophe, Y., Debosscher, J., Hubert, D., Lahoz, W., Santee, M. L., Shiotani, M., Skachko, S., von Clarmann, T., and Walker, K.: Technical note: Reanalysis of Aura MLS chemical observations, Atmos. Chem. Phys., 19, 1364713679,, 2019.


Androsov, A. , Nerger, L. , Schnur, R. , Schröter, J. , Albertella, A. , Rummel, R. , Savcenko, R. , Bosch, W. , Skachko, S. and Danilov, S. (2018): On the assimilation of absolute geodetic dynamic topography in a global ocean model: Impact on the deep ocean state. Journal of Geodesy


Harmonisation and diagnostics of MIPAS ESA CH 4 and N 2 O proles using data assimilation. Authors Q. Errera, S. Ceccherini, Y. Christophe, S. Chabrillat, M. I. Hegglin, A. Lambert, R. Menard, P. Raspollini, S. Skachko, M. van Weele, K. A. Walker. Publication date 2016/12/1 Journal Atmospheric Measurement Techniques Volume 9 Issue 12 Pages 5895. Publisher Copernicus GmbH Scholar articles


Ménard, R., Skachko, S., Pannekoucke, O. Numerical discretization causing error variance loss and the need for inflation. QJRMS, June 2021


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,, 2016.


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,, 2014.





Other languages

Dutch, German