Articles | Volume 12, issue 9
Development and technical paper
05 Sep 2019
Development and technical paper |  | 05 Sep 2019

Dealing with discontinuous meteorological forcing in operational ocean modelling: a case study using ECMWF-IFS and GETM (v2.5)

Bjarne Büchmann

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Cited articles

Bengtsson, L., Andrae, U., Aspelien, T., Batrak, Y., Calvo, J., de Rooy, W., Gleeson, E., Hansen-Sass, B., Homleid, M., Hortal, M., Ivarsson, K.-I., Lenderink, G., Niemelä, S., Nielsen, K. P., Onvlee, J., Rontu, L., Samuelsson, P., Muñoz, D. S., Subias, A., Tijm, S., Tolla, V., Yang, X., and Ødegaard Køltzow, M.: The HARMONIE-AROME Model Configuration in the ALADIN-HIRLAM NWP System, Mon.Weather Rev., 145, 1919–1935,, 2017. a
Bruggeman, J. and Bolding, K.: A general framework for aquatic biogeochemical models, Environ. Modell. Softw., 61, 249–265,, 2014. a
Büchmann, B.: Dealing with discontinuous meteorological forcing in operational ocean modelling: a case study using ECMWF-IFS and GETM (v2.5) (Version 0.1.1) [Data set], Zenodo,, 2019. a, b
Büchmann, B. and Söderkvist, J.: Internal variability of a 3-D ocean model, Tellus A: Dynam. Meteorol. Oceanogr., 68, 30417,, 2016. a, b
Büchmann, B., Hansen, C., and Söderkvist, J.: Improvement of hydrodynamic forecasting of Danish waters: impact of low-frequency North Atlantic barotropic variations, Ocean Dynam., 61, 1611–1617,, 2011. a
Short summary
Operational forecasting of the ocean state – e.g. used for ship route planning, sea rescue, and oil spill drift models – relies on data (forcing) obtained from weather forecasting. Unfortunately, the so-called meteorological analysis step introduces a discontinuity, which affects the ocean models adversely. In the present paper, a straightforward method to deal with the issue is introduced. Practical examples are given to illuminate the scale of the problem.