GEOMAR is a member of

Dr. rer. nat. Ulrike Löptien

Scientist at Research Unit Biogeochemical Modelling

Office:
Room 08
"Seeburg", Düsternbrooker Weg 2
Tel.: +49 431 600-4283
Fax: +49 431 600-1515
E-Mail: uloeptien(at)geomar.de

Address:
GEOMAR | Helmholtz Centre for Ocean Research Kiel
Düsternbrooker Weg 20
24105 Kiel
Germany

Research Interests

Data exploration and modelling (Ocean, Atmosphere, Marine Biogeochemistry, Sea Ice)
Regional process studies (e.g. NAO, Baltic Sea, Tropical Pacific)
Parameter optimization, Gaussian Process Emulators

Education

2000 – 2004 Ph.D in Meteorology at the Christian-Albrechts-University of Kiel
1991 – 1999 Diploma in Mathematics at the Christian-Albrechts-University of Kiel, Germany

Publications

Jump to: Article in a Scientific Journal - peer-reviewed | Book chapter | Conference presentation | Conference poster | Thesis - not published by a publisher

Number of items: 20.

Article in a Scientific Journal - peer-reviewed

Dietze, H. and Löptien, U. (2013) Revisiting "nutrient trapping" in global coupled biogeochemical ocean circulation models Global Biogeochemical Cycles, 27 . na-na. DOI 10.1002/gbc.20029.

Löptien, U., Martensson, S., Meier, H. E. M. and Höglund, A. (2013) Long-term characteristics of simulated ice deformation in the Baltic Sea (1962–2007) Journal of Geophysical Research - Oceans . DOI 10.1002/jgrc.20089.

Löptien, U. (2011) Steady states and sensitivities of commonly used pelagic ecosystem model components Ecological Modelling, 222 (8). pp. 1376-1386. DOI 10.1016/j.ecolmodel.2011.02.005.

Löptien, U. and Meier, H. E. M. (2011) The influence of increasing water turbidity on the sea surface temperature in the Baltic Sea: A model sensitivity study Journal of Marine Systems, 88 (2). pp. 323-331. DOI 10.1016/j.jmarsys.2011.06.001.

Meier, H. E. M., Höglund, A., Döscher, R., Andersson, H., Löptien, U. and Kjellström, E. (2011) Quality assessment of atmospheric surface fields over the Baltic Sea from an ensemble of regional climate model simulations with respect to ocean dynamics Oceanologia, 53 (1_TI). pp. 193-227. DOI 10.5697/oc.53-1-TI.193.

Löptien, U. and Eden, C. (2010) Multidecadal CO2uptake variability of the North Atlantic Journal of Geophysical Research, 115 (D12). D12113. DOI 10.1029/2009JD012431.

Löptien, U., Eden, C., Timmermann, A. and Dietze, H. (2009) Effects of biologically induced differential heating in an eddy-permitting coupled ocean-ecosystem model Journal of Geophysical Research, 114 (C6). DOI 10.1029/2008JC004936.

Löptien, U., Gulev, S. K., Latif, M., Zolina, O. and Soloviov, V. (2008) Cyclone life cycle characteristics over the Northern Hemisphere in coupled GCMs Climate Dynamics, 31 . pp. 507-532. DOI 10.1007/s00382-007-0355-5.

Löptien, U. and Ruprecht, E. (2005) Effect of Synoptic Systems on the Variability of the North Atlantic Oscillation Monthly Weather Review, 133 (10). pp. 2894-2904.

Book chapter

Löptien, U. and Eden, C. (2008) Simulating El-Nino in an eddy-resolving coupled ocean-ecosystem model High Performance Computing in Science and Engineering 08. Springer, Berlin, pp. 471-479.

Conference presentation

Löptien, U. and Meier, H. E. M. (2012) A trafficability index for winter navigation in the Baltic Sea [Talk] In: 7. SAFEWIN assembly meeting, 28.-29.08.2012, Espoo, Finland .

Löptien, U., Maartensson, S., Meier, H. E. M. and Höglund, A. (2012) Ice stress modeling - state of the art [Talk] In: 6. SAFEWIN assembly meeting, 17.-18.04.2012, Turku, Finland .

Löptien, U. and Meier, H. E. M. (2011) The influence of increasing water turbidity on the sea surface temperature in the Baltic Sea: A model sensitivity study [Talk] In: 8. Baltic Sea Science Congress (BSSC), 22.-26.08.2011, St. Petersburg, Russia .

Löptien, U., Maartensson, S., Meier, H. E. M. and Höglund, A. (2011) SAFEWIN: Analysis of modeled ice stresses (RCO-HELMI) [Talk] In: 5. SAFEWIN assembly meeting, 26.-27.10.2011, St. Petersburg, Russia .

Löptien, U., Eden, C. and Timmermann, A. (2008) Biologically induced circulation changes in the tropical Pacific as simulated with eddy-resolving coupled ocean-ecosystem model [Talk] In: EGU General Assembly, 15.04, Vienna, Austria .

Löptien, U., Eden, C. and Timmermann, A. (2008) High resolution hybrid coupled modeling in the tropical Pacific [Talk] In: EGU General Assembly, 15.04, Vienna, Austria .

Löptien, U., Eden, C. and Timmermann, A. (2008) WP2: Simulating ENSO in an eddy-resolving coupled ocean-ecosystem model - part II [Talk] In: DYNAMITE-meeting, 07.02, Bologna, Italy .

Löptien, U., Eden, C. and Timmermann, A. (2008) WP4: Simulating ENSO in an eddy-resolving coupled ocean-ecosystem model - part I [Talk] In: DYNAMITE-meeting, 06.02, Bologna, Italy .

Conference poster

Dietze, H. and Löptien, U. (2012) Revisiting "Nutrient Trapping" in global coupled biogeochemical Ocean Circulation Models [Poster] In: AGU Fall Meeting 2012, 03.-07.12.2012, San Francisco, USA .

Thesis - not published by a publisher

Löptien, U. (2003) Effekte der Wechselwirkung zwischen Ozean und Atmosphäre auf die Nordatlantische Oszillation (Doctoral thesis/PhD), Christian-Albrechts-Universität, Kiel, 98 pp

This list was generated on Wed May 22 16:05:20 2013 CEST.