Dr. Volkmar Sauerland

Scientist in Biogeochemical Modelling

[Translate to English:] Volkmar Sauerland

Office:
Room 5.506
Turm 5, Floor 5

Phone: +49 431 600–4039
E-Mail: vsauerland(at)geomar.de

Address:
GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel
Wischhofstraße 1–3
24148 Kiel

Research Interests

I am working on algorithms for discrete and continuous optimization problems and their adaptation for the calibration (parameter optimization) and evaluation of biogeochemical ocean models.
Currently, I am working on the EU project OceanICU "Understanding Ocean Carbon."

Education and Employment

04/2021–02/2022 and since 11/2022: Scientist in the Biogeochemical Modeling Research Unit at GEOMAR.
2013–2020: Postdoctoral Researcher and Scientist in the Discrete Optimization Research Group at CAU.
2005–2012: PhD Candidate and Research Associate in the Discrete Optimization Research Group at CAU.
2003: Diploma, Discrete Optimization Research Group, CAU.

Publications

Jump to: Articles in a Scientific Journal - peer-reviewed | Presentations | Theses - not published by a publisher | Reports - other reports

Number of items: 20.

Articles in a Scientific Journal - peer-reviewed

[thumbnail of J Adv Model Earth Syst - 2023 - Sauerland.pdf]

Sauerland, V., von Hallern, C., Kriest, I. and Getzlaff, J. (2023) A CMA‐ES Algorithm Allowing for Random Parameters in Model Calibration.

Journal of Advances in Modeling Earth Systems, 15 (8). Art.Nr. e2022MS003390. DOI 10.1029/2022MS003390.

[thumbnail of bg-20-2645-2023-supplement.pdf]

Kriest, I. , Getzlaff, J., Landolfi, A. , Sauerland, V., Schartau, M. and Oschlies, A. (2023) Exploring the role of different data types and timescales for the quality of marine biogeochemical model calibration.

Biogeosciences (BG), 20 (13). pp. 2645-2669. DOI 10.5194/bg-20-2645-2023.

[thumbnail of bg-17-3057-2020-supplement.pdf]

Kriest, I. , Kähler, P., Koeve, W. , Kvale, K. F. , Sauerland, V. and Oschlies, A. (2020) One size fits all? Calibrating an ocean biogeochemistry model for different circulations.

Biogeosciences (BG), 17 . pp. 3057-3082. DOI 10.5194/bg-17-3057-2020.

El Ouali, M. and Sauerland, V. (2020) The Exact Query Complexity of Yes-No Permutation Mastermind.

Games, 11 (2). Art.Nr. 19. DOI 10.3390/g11020019.

[thumbnail of Sauerland_et_al-2019-Journal_of_Advances_in_Modeling_Earth_Systems.pdf]

Sauerland, V. , Kriest, I. , Oschlies, A. and Srivastav, A. (2019) Multiobjective Calibration of a Global Biogeochemical Ocean Model Against Nutrients, Oxygen, and Oxygen Minimum Zones.

Journal of Advances in Modeling Earth Systems, 11 (5). pp. 1285-1308. DOI 10.1029/2018MS001510.

Sauerland, V., Löptien, U. , Leonhard, C., Oschlies, A. and Srivastav, A. (2018) Error assessment of biogeochemical models by lower bound methods (NOMMA-1.0).

Geoscientific Model Development, 11 (3). pp. 1181-1198. DOI 10.5194/gmd-2017-133.

El Ouali, M., Glazik, C., Sauerland, V. and Srivastav, A. (2018) On the Query Complexity of Black-Peg AB-Mastermind.

Games, 9 (1). Art.Nr. 2. DOI 10.3390/g9010002.

[thumbnail of gmd-10-127-2017-supplement.zip]

Kriest, I. , Sauerland, V., Khatiwala, S., Srivastav, A. and Oschlies, A. (2017) Calibrating a global three-dimensional biogeochemical ocean model (MOPS-1.0).

Geoscientific Model Development, 10 . pp. 127-154. DOI 10.5194/gmd-10-127-2017.

Baltz, A., El Ouali, M., Jager, G., Sauerland, V. and Srivastav, A. (2015) Exact and heuristic algorithms for the Travelling Salesman Problem with Multiple Time Windows and Hotel Selection. Journal of the Operational Research Society, 66 (4). pp. 615-626. DOI 10.1057/jors.2014.17.

El Ouali, M. and Sauerland, V. (2013) Improved Approximation Algorithm for the Number of Queries Necessary to Identify a Permutation. Combinatorial Algorithms. IWOCA 2013. Lecture Notes in Computer Science, 8288 . pp. 443-447. DOI 10.1007/978-3-642-45278-9_40.

Kliemann, L., Kliemann, O., Patvardhan, C., Sauerland, V. and Srivastav, A. (2013) A New QEA Computing Near-Optimal Low-Discrepancy Colorings in the Hypergraph of Arithmetic Progressions. Experimental Algorithms. SEA 2013. Lecture Notes in Computer Science, 7933 . pp. 67-78. DOI 10.1007/978-3-642-38527-8_8.

[thumbnail of 1-s2.0-S146812181000043X-main.pdf]

Ruckelt, J., Sauerland, V. , Slawig, T., Srivastav, A., Ward, B. and Patvardhan, C. (2010) Parameter optimization and uncertainty analysis in a model of oceanic CO2 uptake using a hybrid algorithm and algorithmic differentiation. Nonlinear Analysis-Real World Applications, 11 (5). pp. 3993-4009. DOI 10.1016/j.nonrwa.2010.03.006.

Patvardhan, C., Sauerland, V. and Srivastav, A. (2009) Systemic studies on large scale natural systems: an efficient quantum evolutionary algorithm for marine CO2-simulation. Proceedings of the International Conference on Applied Systems Research . pp. 44-47.

[thumbnail of Fixed-point-coefficient_FIR_filters_and_filter_banks_Improved_design_by_randomized_quantizations.pdf]

Heute, U., Srivastav, A., Sauerland, V. and Kliewer, J. (2007) Fixed-point-coefficient FIR filters and filter banks: Improved design by randomized quantizations. Signal Processing and Its Applications, 2007. ISSPA 2007. 9th International Symposium on Signal Processing and Its Applications . pp. 1-4. DOI 10.1109/ISSPA.2007.4555335.

Presentations

Kriest, I. , Kähler, P., Khatiwala, S., Koeve, W. , Kvale, K. F. , Sauerland, V. and Oschlies, A. (2020) One size fits all? - Optimising ocean biogeochemistry for different circulations. [Talk] In: Ocean Sciences Meeting 2020. , 16.-21.02.2020, San Diego, USA .

Kriest, I. , Sauerland, V. and Oschlies, A. (2018) As good as it gets: Fitting a global biogeochemical model to oxygen minimum zones. [Talk] In: Ocean Deoxygenation: Drivers and Consequences - Past/Present/Future. International Conference. , 03.-07.09.2018, Kiel, Germany .

Kriest, I. , Sauerland, V. and Oschlies, A. (2018) Parameter optimization helps to shed light on the role of ocean biota for oxygen and nitrogen cycles. [Invited talk] In: Kiel Symposium on Discrete Algorithms and their Applications in Marine-and Life Sciences – An Indo-German Perspective. , 12.-14.09.2018, Kiel, Germany .

Theses - not published by a publisher

Sauerland, V. (2012) Algorithm Engineering for some Complex Practise ProblemsExact Algorithms, Heuristics and Hybrid Evolutionary Algorithms.

(PhD/ Doctoral thesis), Christian-Albrechts-Universität zu Kiel, Kiel, Germany, 83 pp.

Sauerland, V. (2003) Mathematische Optimierung im Entwurf kosinus-modulierter Filterbänke. (Diploma thesis), Christian-Albrechts-Universität zu Kiel, Kiel, Germany, 83 pp.

Reports - other reports

[thumbnail of 762030301d9ca4d3709c33f092f904319d8f.pdf]

Rückelt, J., Sauerland, V. , Slawig, T., Srivastav, A., Ward, B. and Patvardhan, C. (2009) Parameter Optimization and Validation of a Marine Biogeochemical Model using a Hybrid Algorithm.

. Bericht / Institut für Informatik der Christian-Albrechts-Universität zu Kiel, 0919 . Christian-Albrechts-Universität zu Kiel. Institut für Informatik , Kiel, Germany, 32 pp.

This list was generated on Thu Dec 26 05:04:53 2024 CET.