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Dr. Sebastian Grayek

Dr. Sebastian Grayek

Hydrodynamik und Datenassimilation

Wissenschaftler

Tel: +49 (0) 4152 87-1504

E-Mail Kontakt

Research interest

Develop and evaluate methods and concepts for the modelling and monitoring of the coastal marine environment. This includes the research and development in the fields of Earth System Models, numerical model coupling, data assimilation, observation system evaluation and observation system simulation experiments.

Laufende Projekte

  • PACES 2 (Topic 4; WP1): Operational analyses and forecasting
  • CliCCS Excellence Cluster Climate, Climatic Change, and Society
  • Digital Earth
  • ESM Advanced Earth System Modelling Capacity
  • BluEs Nachhaltige Ästuar Entwicklung unter Klimawandel und
    anderen Stressoren
  • Weiterentwicklung des Regionalen Ozeanmodells Zentrum Geoinfo der Bundeswehr

Research

Since 2015 Junior Researcher in the Institute of Coastal Systems Analysis and Modeling at the Helmholtz-Zentrum Hereon Centre for Materials and Coastal Research (Hereon); Projects: PACES 2 (Topic 4; WP1): Operational analyses and forecasting

2012-2015 Junior Researcher Researcher in the Institute for Coastal Research at the Helmholtz-Zentrum Hereon Centre for Materials and Coastal Research (Hereon); Project: MyOcean 2 (WP19.2)

2010-2012 Junior Researcher in the Institute for Chemistry and Biology of the Marine Environment (ICBM) of the University of Oldenburg; Project: WIMO (Wissenschaftliche Monitoringkonzepte für die Deutsche Bucht, ‘Monitoring Concepts for the German Bight‘)

2008-2009 Junior Researcher in the Institute for Coastal Research at the Helmholtz-Zentrum Hereon Centre for Materials and Coastal Research (Hereon); Project: COSYNA (Coastal Observing System for Northern and Arctic)

2006-2010 Junior Researcher Scientist in the Institute for Chemistry and Biology of the Marine Environment (ICBM) of the University of Oldenburg; Project: Spatial and Temporal Resolution Limits for Regional Mass Transport and Mass Distribution (STREMP)

Education

2011 PhD in Marine Environmental Science; University of Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Oldenburg, Germany; Thesis: Data Assimilation in European Regional and Coastal Seas (Black Sea and German Bight).

2006 Diploma in Marine Environmental Science; University of Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Oldenburg, Germany; Thesis: Feeding Behavior of Dinoflagellates at the Helgoland Reede during the Spring Bloom 2005

  • Chen, W., Staneva, J., Grayek, S., Schulz-Stellenfleth, J., & Greinert, J. (2022): The role of heat wave events in the occurrence and persistence of thermal stratification in the southern North Sea. Nat. Hazards Earth Syst. Sci., 22, 1683–1698, doi:10.5194/nhess-22-1683-2022
  • Grayek, S., Stanev, E., Pham, N., Bonaduce, A., & Staneva, J. (2022): Consistent data set of coastal sea level: The synergy between tidal gauge data and numerical modelling. Copernicus Ocean State Report, Issue 6, Journal of Operational Oceanography, 15:suppl, 1-220, S.3.4, 110-118, doi:10.1080/1755876X.2022.2095169
  • Chen, W., Schulz-Stellenfleth, J., Grayek, S., & Staneva, J. (2021): Impacts of the assimilation of satellite sea surface temperature data on volume and heat budget estimates for the North Sea. Journal of Geophysical Research: Oceans, 126, e2020JC017059, doi:10.1029/2020JC017059
  • Li, D., Staneva, J., Bidlot, J.-R., Grayek, S., Zhu, Y., & Yin, B. (2021): Improving Regional Model Skills During Typhoon Events: A Case Study for Super Typhoon Lingling Over the Northwest Pacific Ocean. Front. Mar. Sci. 8:613913, doi:10.3389/fmars.2021.613913
  • Staneva, J., Grayek, S., Behrens, A., & Günther, H. (2021): GCOAST: Skill assessments of coupling wave and circulation models (NEMO-WAM). Journal of Physics: Conference Series, Vol. 1730, 01207I, doi:10.1088/1742-6596/1730/1/012071
  • Bonaduce, A., Staneva, J., Grayek, S., Bidlot, J.-R., & Breivik, Ø. (2020): Sea-state contributions to sea-level variability in the European Seas. Ocean Dynamics, doi:10.1007/s10236-020-01404-1
  • Dinardo, S., Fenoglio-Marc, L., Becker, M., Scharroo, R., Fernandes, M.J., Staneva, J., Grayek, S., & Benveniste, J. (2020): A RIP-based SAR Retracker and its application in North East Atlantic with Sentinel-3. Advances in Space Research, doi:10.1016/j.asr.2020.06.004
  • Ho-Hagemann, H.T.M., Hagemann, S., Grayek, S., Petrik, R., Rockel, B., Staneva, J., Feser, F., & Schrum, C. (2020): Internal Model Variability of the Regional Coupled System Model GCOAST-AHOI. Atmosphere 2020, 11, 227, doi:10.3390/atmos11030227
  • Li, D., Staneva, J., Grayek, S., Behrens, A., Feng, J., & Yin, B. (2020): Skill Assessment of an Atmosphere–Wave Regional Coupled Model over the East China Sea with a Focus on Typhoons. Atmosphere 2020, 11, 252, doi:10.3390/atmos11030252
  • Stanev, E.V., Ricker, M., Grayek, S., Jacob, B., Haid, V., & Staneva, J. (2020): Numerical Eddy-Resolving Modeling of the Ocean: Mesoscale and Sub-Mesoscale Examples. Physical Oceanography, 27(6), 631–658, doi:10.22449/1573-160X-2020-6-631-658
  • Wiese, A., Staneva, J., Ho-Hagemann, H.T.M., Grayek, S., Koch, W., & Schrum, C. (2020): Internal Model Variability of Ensemble Simulations With a Regional Coupled Wave-Atmosphere Model GCOAST. Front. Mar. Sci. 7:596843, doi:10.3389/fmars.2020.596843
  • Zhang, Z., Stanev, E.V., & Grayek, S. (2020): Reconstruction of the basin‐wide sea level variability in the north sea using coastal data and generative adversarial networks. J. Geophys. Res. Oceans. 125, e2020JC016402, doi:10.1029/2020JC016402
  • Stanev, E.V., Badewien, T.H., Freund, H., Grayek, S., Hahner, F., Meyerjürgens, J., Ricker, M., Schöneich-Argent, R.I., Wolff, J.-O., & Zielinski, O. (2019): Extreme westward surface drift in the North Sea: Public reports of stranded drifters and Lagrangian tracking. Continental Shelf Research, Volume 177, Pages 24-32, doi:10.1016/j.csr.2019.03.003
  • Stanev, E.V., Poulain, P.-M., Grayek, S., Johnson, K.S., Claustre, H., & Murray, J.W. (2018): Understanding the Dynamics of the Oxic‐Anoxic Interface in the Black Sea. Geophysical Research Letters, Volume 45, Issue 2, Pages 864-871, doi:10.1002/2017GL076206
  • Stanev, E. V., Grayek, S., Claustre, H., Schmechtig, C., Poteau, A. (2017). Water intrusions and particle signatures in the Black Sea: a Biogeochemical-Argo float investigation. Ocean Dynamics, 67(9), 1119-1136
  • Stanev, E. V., Schulz-Stellenfleth, J., Staneva, J., Grayek, S., Grashorn, S., Behrens, A., Pein, J. (2016). Ocean forecasting for the German Bight: from regional to coastal scales. Ocean Science, 12(5), 1105
  • Pein, J. U., Grayek, S., Schulz-Stellenfleth, J., Stanev, E. V. (2016). On the impact of salinity observations on state estimates in Ems Estuary. Ocean Dynamics, 66(2), 243-262
  • Grayek, S., Stanev, E. V., Schulz-Stellenfleth, J. (2015). Assessment of the Black Sea observing system. A focus on 2005-2012 Argo campaigns. Ocean Dynamics, 65(12), 1665-1684
  • Stanev, E. V., He, Y., Grayek, S., Boetius, A. (2013). Oxygen dynamics in the Black Sea as seen by Argo profiling floats. Geophysical Research Letters, 40(12), 3085-3090
  • Aus der Beek, T., Menzel, L., Rietbroek, R., Fenoglio-Marc, L., Grayek, S., Becker, M., Stanev, E. V. (2012). Modeling the water resources of the Black and Mediterranean Sea river basins and their impact on regional mass changes. Journal of Geodynamics, 59, 157-167
  • Sperling, M., Giebel, H. A., Rink, B., Grayek, S., Staneva, J., Stanev, E., Simon, M. (2012). Differential effects of hydrographic and biogeochemical properties on the SAR11 clade and Roseobacter RCA cluster in the North Sea. Aquatic microbial ecology, 67(1), 25-34
  • Fenoglio-Marc, L., Rietbroek, R., Grayek, S., Becker, M., Kusche, J., Stanev, E. (2012). Water mass variation in the Mediterranean and Black Seas. Journal of Geodynamics, 59, 168-182
  • Stanev, E. V., Schulz-Stellenfleth, J., Staneva, J., Grayek, S., Seemann, J., Petersen, W. (2011). Coastal observing and forecasting system for the German Bight–estimates of hydrophysical states. Ocean Science, 7(5), 569-583
  • Grayek, S., Staneva, J., Schulz-Stellenfleth, J., Petersen, W., & Stanev, E. V. (2011). Use of FerryBox surface temperature and salinity measurements to improve model based state estimates for the German Bight. Journal of Marine Systems, 88(1), 45-59
  • Grayek, S., Stanev, E. V., Kandilarov, R. (2010). On the response of Black Sea level to external forcing: altimeter data and numerical modelling. Ocean dynamics, 60(1), 123-140
  • Stanev, E. V., Dobrynin, M., Pleskachevsky, A., Grayek, S., Günther, H. (2009). Bed shear stress in the southern North Sea as an important driver for suspended sediment dynamics. Ocean Dynamics, 59(2), 183-194
  • Stanev, E. V., Grayek, S., Staneva, J. (2009). Temporal and spatial circulation patterns in the East Frisian Wadden Sea. Ocean dynamics, 59(2), 167-181