Items where Author is "Timmermann, Ralph"

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Number of items: 135.

Conference -Poster

Hoppmann, M. , Nicolaus, M. , Paul, S. , Willmes, S. , Heinemann, G. and Timmermann, R. (2013)
Sea-Ice Mass Balance Influenced by Ice Shelves ,

Koordinationsworkshop SPP Antarktisforschung , Bochum, 27 September 2013 - 29 September 2013 .

hdl:10013/epic.42766

Article

Timmermann, R. and Hellmer, H. (2013)
Southern Ocean warming and increased ice shelf basal melting in the twenty-first and twenty-second centuries based on coupled ice-ocean finite-element modelling ,

Ocean Dynamics, 63 (9), pp. 1011-1026 .

doi:10.1007/s10236-013-0642-0 , hdl:10013/epic.41921

Preview

Conference -Talk

Hollands, T. , Haid, V. , Dierking, W. and Timmermann, R. (2013)
Sea ice in motion - comparing observations and simulations ,

ISSI Team Meeting Antarctic Sea Ice, Bern, Switzerland, 22 July 2013 - 26 July 2013 .

hdl:10013/epic.42754

Conference -Talk

Hollands, T. , Haid, V. , Dierking, W. and Timmermann, R. (2013)
Sea ice in motion - comparing observations and simulations ,

AWI-IUP Blockseminar, Bremerhaven, Germany, 5 July 2013 - unspecified .

hdl:10013/epic.42752

Article

Juricke, S. , Lemke, P. , Timmermann, R. and Rackow, T. (2013)
Effects of Stochastic Ice Strength Perturbation on Arctic Finite Element Sea Ice Modeling ,

Journal of Climate, 26 (11), pp. 3785-3802 .

doi:10.1175/JCLI-D-12-00388.1 , hdl:10013/epic.41637

Conference -Talk

Hellmer, H. , Timmermann, R. and Determann, J. (2013)
Southern Ocean warming: Increase in basal melting and grounded ice loss ,

27th FRISP Workshop, Gregynog Hall, Powys, Wales, 2013 - 19 June 2013 .

hdl:10013/epic.41732

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Article

Haid, V. and Timmermann, R. (2013)
Simulated heat flux and sea ice production at coastal polynyas in the southwestern Weddell Sea ,

JOURNAL OF GEOPHYSICAL RESEARCH: OCEANS, 118 , pp. 2640-2652 .

doi:10.1002/jgrc.20133 , hdl:10013/epic.41922

Conference -Poster

Timmermann, R. and Hellmer, H. (2013)
Southern Ocean warming and increased ice shelf basal melting in the 21st and 22nd centuries based on coupled ice-ocean finite-element modelling ,

European Geosciences Union General Assembly 2013, Vienna, 7 April 2013 - 12 April 2013 .

hdl:10013/epic.42481

Article

Hollands, T. , Haid, V. , Dierking, W. , Timmermann, R. and Ebner, L. (2013)
Sea ice motion and open water area at the Ronne Polynia, Antarctica: Synthetic aperture radar observations versus model results ,

Journal of Geophysical Research-Oceans, 118 .

hdl:10013/epic.41399

Conference -Invited talk

Hellmer, H. , Timmermann, R. and Determann, J. (2013)
Southern Ocean ice shelf melting in a warming climate ,

CLIVAR WGOMD – SOP Workshop on Sea-Level Rise, Ocean/Ice shelf Interactions, and Ice Sheets, CSIRO Marine and Atmospheric Research, Hobart, Australia, 18 February 2013 - 20 February 2013 .

hdl:10013/epic.41157

Inbook

Schwegmann, S. , Timmermann, R. , Gerdes, R. and Lemke, P. (2013)
Summer sea ice concentration changes in the Weddell Sea and their causes / Grosfeld, K. , Lohmann, G. , Wolf-Gladrow, D. , Unnithan, V. , Notholt, J. and Wegner, A. (editors) ,

In: Earth System Science: Bridging the Gaps between Disciplines Perspectives from a Multi-disciplinary Helmholtz Research School, SpringerBriefs in Earth System Science, Heidelberg, Springer, 138 p., ISBN: ISBN 978-3-642-32234 .

doi:10.1007/978-3-642-32235-8 , hdl:10013/epic.41286

Conference -Poster

Hollands, T. , Dierking, W. , Haid, V. and Timmermann, R. (2012)
Comparison of local sea ice motion at a polynia from SAR observations and model simulations ,

Earth Observation and Cryosphere Science, Frascati, Italy, 13 November 2012 - 16 November 2012 .

hdl:10013/epic.41029

Preview

Conference -Poster

Hoppmann, M. , Nicolaus, M. , Heinemann, G. , Willmes, S. , Paul, S. and Timmermann, R. (2012)
Sea-Ice Mass Balance Influenced by Ice Shelves ,

Koordinationsworkshop DFG-Schwerpunktprogramm 1158, Jena, 26 September 2012 - 28 September 2012 .

hdl:10013/epic.40156

Preview

Conference -Talk

Schwegmann, S. , Timmermann, R. , Gerdes, R. and Lemke, P. (2012)
Sea ice variability and trends in the Weddell Sea for 1979-2006 ,

SCAR and Open Science conference , Portland, Oregon, USA .

hdl:10013/epic.41588

Preview

Conference -Invited talk

Hellmer, H. , Timmermann, R. , Kauker, F. and Schröder, M. (2012)
The 21st-century Weddell Sea hosing experiment: Causes and consequences ,

26th International Forum for Research into Ice Shelf Processes, Utø, Sweden, 12 June 2012 - 14 June 2012 .

hdl:10013/epic.39663

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Conference -Poster

Haid, V. , Timmermann, R. , Ebner, L. and Heinemann, G. (2012)
Impact of coastal polynyas on sea ice production and water mass modification in the southwestern Weddell Sea ,

EGU General Assembly 2012, Vienna, Austria, 22 April 2012 - 27 April 2012 .

hdl:10013/epic.39288

Conference -Talk

Haid, V. , Timmermann, R. , Ebner, L. and Heinemann, G. (2012)
Coastal Polynyas in the Southwestern Weddell Sea : Sea Ice Production and Water Mass Modification ,

IPY Conference Montreal, Montreal, Canada, 22 April 2012 - 27 April 2012 .

hdl:10013/epic.39287

Conference -Talk

Ritz, C. , Durand, G. , Edwards, T. , Hellmer, H. , Payne, T. , Shannon, S. and Timmermann, R. (2012)
Antarctic instability and possible associated contribution to sea-level rise ,

EGU General Assembly 2012, Vienna, 22 April 2012 - 27 April 2012 .

hdl:10013/epic.39661

Conference -Invited talk

Timmermann, R. and Hellmer, H. (2012)
Projections of ice shelf basal melting in a global finite element sea ice - ice shelf - ocean model ,

European Geosciences Union General Assembly 2012, Vienna, 22 April 2012 - 27 April 2012 .

hdl:10013/epic.39185

Conference -Poster

Janjic Pfander, T. , Timmermann, R. and Schröter, J. (2012)
Improved representation of Southern Ocean fronts in a finite element ocean model ,

EGU, Vienna, 22 April 2012 - 27 April 2012 .

hdl:10013/epic.39683

Conference -Talk

Timmermann, R. and Hellmer, H. (2012)
Projections of ice shelf basal melting in a global finite-element sea ice–ice shelf–ocean model ,

Ocean Sciences Meeting 2012, Salt Lake City, 19 February 2012 - 24 February 2012 .

hdl:10013/epic.39017

Conference -Poster

Haid, V. , Timmermann, R. , Heinemann, G. and Ebner, L. (2012)
Dense shelf water formation at coastal polynyas in the Weddell Sea ,

XXXII SCAR and Open Science Conference, Portland, Oregon, U. S. A., 13 July 2012 - 25 July 2012 .

hdl:10013/epic.39816

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Article

Timmermann, R. , Wang, Q. and Hellmer, H. (2012)
Ice shelf basal melting in a global finite-element sea ice/ice shelf/ocean model ,

Annals of Glaciology, 53 (60) .

doi:10.3189/2012AoG60A156 , hdl:10013/epic.40279

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Article

Hellmer, H. H. , Kauker, F. , Timmermann, R. , Determann, J. and Rae, J. (2012)
Twenty-first-century warming of a large Antarctic ice-shelf cavity by a redirected coastal current ,

Nature, 485 (7397), pp. 225-228 .

doi:10.1038/nature11064 , hdl:10013/epic.39299

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Article

Ernsdorf, T. , Schröder, D. , Adams, S. , Heinemann, G. , Timmermann, R. and Danilov, S. (2011)
Impact of atmospheric forcing data on simulations of the Laptev Sea polynya dynamics using the sea-ice ocean model FESOM ,

Journal of Geophysical Research-Oceans, 116 (C12038), pp. 1-18 .

doi:10.1029/2010JC006725 , hdl:10013/epic.38745

Conference -Poster

Timmermann, R. and Hellmer, H. (2011)
Quantification of ice-shelf basal melting using a global finite-element sea ice--ice shelf--ocean model ,

IGS-International Symposium on "Interactions of Ice Sheets and Glaciers with the Ocean", La Jolla, CA, USA, 5 June 2011 - 10 June 2011 .

hdl:10013/epic.39665

Conference -Poster

Timmermann, R. , Hellmer, H. and Kauker, F. (2011)
Simulated Southern Ocean response to forcing with climate model output ,

EGU General Assembly 2011, Vienna, 3 April 2011 - 8 April 2011 .

hdl:10013/epic.39662

Conference -Talk

Hellmer, H. , Timmermann, R. and Kauker, F. (2011)
Another ice shelf soon to be in hot water? ,

Ice2Sea Second Open Forum, 16 - 18 March 2011, Copenhagen, Denmark. .

hdl:10013/epic.37268

Article

Vancoppenolle, M. , Timmermann, R. , Ackley, S. F. , Fichefet, T. , Goosse, H. , Heil, P. , Leonard, K. C. , Lieser, J. , Nicolaus, M. , Papakyriakou, T. and Tison, J. L. (2011)
Assessment of radiation forcing data sets for large-scale sea ice models in the Southern Ocean. ,

Deep-Sea Research II, 58(9-10)Antarctic Sea Ice Research during the International Polar Year, 1237 , pp. 2007-2009 .

doi:10.1016/j.dsr2.2010.10.039 , hdl:10013/epic.37530

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Conference -Talk

Haid, V. , Timmermann, R. , Ebner, L. and Heinemann, G. (2011)
Coastal polynyas in the southwestern Weddell Sea: sea ice production and bottom water formation ,

Geophysical Research Abstracts, Vol. 13, EGU .

hdl:10013/epic.37785

Conference -Poster

Brunnabend, S. E. , Schröter, J. , Timmermann, R. , Rietbroek, R. and Kusche, J. (2011)
Decadal sea level change due to Greenland Ice Sheet melting ,

Geophysical Research Abstracts, Vol. 13, EGU2011-6253, EGU General Assembly 2011. .

hdl:10013/epic.37396

Article

Adams, S. , Wilmes, S. , Heinemann, G. , Rozman, P. , Timmermann, R. and Schröder, D. (2011)
Evaluation of simulated sea-ice concentrations from sea ice / ocean models using satellite data and polynya classification methods ,

Polar Research, 30, 7124 .

doi:10.3402/polar.v30i0.7124 , hdl:10013/epic.37803

Article

Brunnabend, S. E. , Rietbroek, R. , Timmermann, R. , Schröter, J. and Kusche, J. (2011)
Improving mass redistribution estimates by modeling ocean bottom pressure uncertainties ,

Journal of Geophysical Research., 116 .

doi:10.1029/2010JC006617 , hdl:10013/epic.37804

Conference -Talk

Brunnabend, S. E. , Schröter, J. and Timmermann, R. (2011)
Oceanic response due to Greenland ice sheet melting ,

REKLIM Workshop, 29.-30. Maerz 2011, Bremerhaven, Germany. .

hdl:10013/epic.37398

Article

Hellmer, H. , Huhn, O. , Gomis, D. and Timmermann, R. (2011)
On the freshening of the northwestern Weddell Sea continental shelf ,

Ocean Science, 7 (3), pp. 305-316 .

doi:10.5194/os-7-305-2011 , hdl:10013/epic.37471

Preview

Conference -Poster

Timmermann, R. , Wang, Q. and Hellmer, H. (2011)
Quantification of ice shelf basal melting using a global finite-element sea ice--ice shelf--ocean model ,

Ice2sea Open Forum, Kopenhagen, 15 March 2011 - 18 March 2011 .

hdl:10013/epic.39676

Conference -Talk

Hellmer, H. , Timmermann, R. and Kauker, F. (2011)
Will another ice shelf soon float in 'hot' water? ,

IGS-International Symposium on "Interactions of Ice Sheets and Glaciers with the Ocean", 610 June 2011, La Jolla, CA, USA. .

hdl:10013/epic.37567

Conference -Poster

Timmermann, R. (2010)
RTOPO-1: A consistent dataset for Antarctic ice shelf topography and global ocean bathymetry ,

EGU General Assembly 2010, Vienna, 2 May 2010 - 7 May 2010 .

hdl:10013/epic.39674

Inbook

Böning, C. , Timmermann, R. , Danilov, S. and Schröter, J. (2010)
Antarctic Circumpolar Current Transport Variability in GRACE Gravity Solutions and Numerical Ocean Model Simulations ,

System Earth via Geodetic-Geophysical Space Techniques Advanced Technologies in Earth Sciences, 2010, Part 2, 187-199, DOI: 10.1007/978-3-642-10228-8_15, Part 2 .

doi:10.1007/978-3-642-10228-8_15 , hdl:10013/epic.36193

Conference -Poster

Haid, V. and Timmermann, R. (2010)
Coastal polynyas in the western Weddell Sea ,

Geophysical Research Abstracts, Vol. 12, EGU .

hdl:10013/epic.36011

Conference -Poster

Brunnabend, S. E. , Rietbroek, R. , Schröter, J. , Kusche, J. and Timmermann, R. (2010)
Estimated error of modelled OBP and its influence to a joint inversion Sandra-Esther ,

Geophysical Research Abstracts, Vol 12, EGU .

hdl:10013/epic.35876

Conference -Talk

Hellmer, H. , Huhn, O. , Timmermann, R. and Schröder, M. (2010)
Melting beneath Larsen C Ice Shelf - a 'hydrographic' estimate ,

24th International Forum for Research into Ice Shelf Processes (FRISP) Workshop, 21 - 24 June 2010, Bad Bederkesa, Germany. .

hdl:10013/epic.35332

Article

Charrassin, J. B. , Roquet, F. , Park, Y. H. , Bailleul, F. , Guinet, C. , Meredith, M. , Nicholls, K. , Thorpe, S. , Tremblay, Y. , Costa, D. , Göbel, M. , Muelbert, M. , Bester, M. N. , Plötz, J. , Bornemann, H. , Timmermann, R. , Hindell, M. , Meijers, A. , Coleman, R. C. , Field, I. C. , McMahon, C. , Rintoul, S. , Sokolov, S. , Fedak, M. , Lovell, P. , Biuw, M. , Kovacs, K. and Lydersen, C. (2010)
New insights into Southern Ocean physical and biological processes revealed by instrumented elephant seals ,

Proceedings of OceanObs 09: Sustained Ocean Observations and Information for Society (Vol. 2), Venice, Italy, 21-25 September 2009, Hall, J., Harrison D.E. & Stammer, D., Eds., ESA Publication WPP-306. .

hdl:10013/epic.37802

Preview

Conference -Poster

Hellmer, H. , Huhn, O. , Gomis, D. , Timmermann, R. and Schröder, M. (2010)
On the freshening of the northwestern Weddell Sea continental shelf ,

EGU General Assembly, OS7, 5 - 8 May, Vienna, Austria. .

hdl:10013/epic.35333

Conference -Talk

Hellmer, H. , Huhn, O. , Timmermann, R. and Schröder, M. (2010)
On the freshening of the northwestern Weddell Sea continental shelf ,

24. Internationale Polartagung, 6.-10. September 2010, Obergurgl, Oesterreich. .

hdl:10013/epic.35898

Conference -Poster

Timmermann, R. (2010)
RTopo-1: A consistent dataset for Antarctic ice shelf topography and global ocean bathymetry ,

24th International Forum for Research into Ice Shelf Processes (FRISP) , Bad Bederkesa, 21 June 2010 - 24 June 2010 .

hdl:10013/epic.39688

Conference -Talk

Harig, S. , Sidorenko, D. , Wang, Q. , Timmermann, R. , Wekerle, C. , Rakowsky, N. , Danilov, S. and Schröter, J. (2010)
Recent applications of FEOM and TsunAWI: regional and global experiments ,

IMUM 2010, MIT, Boston, August 17-20 .

hdl:10013/epic.36192

Conference -Poster

Haid, V. , Timmermann, R. , Heinemann, G. and Ebner, L. (2010)
Simulation of coastal polynyas and associated ocean processes in the western Weddell Sea ,

Internationale Polartagung, Obergurgl.-10. September 2010. .

hdl:10013/epic.36010

Article

Timmermann, R. , Le Brocq, A. , Deen, T. , Domack, E. , Dutrieux, P. , Galton-Fenzi, B. , Hellmer, H. , Humbert, A. , Jansen, D. , Jenkins, A. , Lambrecht, A. , Makinson, K. , Niederjasper, F. , Nitsche, F. , Nøst, O. A. , Smedsrud, L. H. and Smith, W. H. F. (2010)
A consistent dataset of Antarctic ice sheet topography, cavity geometry, and global bathymetry ,

Earth Syst. Sci. Data, 2, 261-273, 2010 ( ) .

doi:10.5194/essd-2-261-2010 , hdl:10013/epic.36409

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Conference -Talk

Hellmer, H. and Timmermann, R. (2010)
The urgent need for a better representation of bottom topography of the Antarctic marginal seas ,

ICE2SEA First Open Forum, 17 - 18 March 2010, Krakow, Poland. .

hdl:10013/epic.34377

Conference -Talk

Brunnabend, S. E. , Schröter, J. , Rietbroek, R. , Kusche, J. , Dahle, C. , Flechtner, F. , Böning, C. and Timmermann, R. (2009)
Abschätzung des Fehlers modellierter Veränderungen im Ozeanbodendruck und Vergleich mit in-situ Bodendruckdaten ,

Geodätische Woche, Karlsruhe, Germany.-24. September 2009. .

hdl:10013/epic.33404

Article

Rollenhagen, K. , Timmermann, R. , Janjic Pfander, T. , Schröter, J. and Danilov, S. (2009)
Assimilation of sea ice motion in a Finite Element Sea Ice Model ,

Jourmal of Geophysical Research, 114, C05007 .

doi:10.1029/2008JC005067 , hdl:10013/epic.32605

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Article

Rietbroek, R. , Brunnabend, S. E. , Dahle, C. , Kusche, J. , Flechtner, F. , Schröter, J. and Timmermann, R. (2009)
Changes in total ocean mass derived from GRACE, GPS, and ocean modeling with weekly resolution ,

Journal of Geophysical Research - Oceans, 114, C11004, doi:10.1029/2009JC005449. .

doi:10.1029/2009JC005449 , hdl:10013/epic.33721

Conference -Talk

Brunnabend, S. E. , Schröter, J. , Rietbroek, R. , Kusche, J. and Timmermann, R. (2009)
Contribution of present-day ice sheet melting to global sea-level rise (FIGO) ,

3. SPP1257 Workshop, topic 4, Eitorf, Germany. June - 01. July 2009. .

hdl:10013/epic.32975

Conference -Talk

Schröder, D. , Ebner, L. , Heinemann, G. , Timmermann, R. , Stadler, J. and Ernsdorf, T. (2009)
Impact of the Laptev-Sea polynyas on the atmospheric boundary layer and sea ice formation ,

Geophysical Research Abstracts, 11, EGU General Assembly, Vienna .

hdl:10013/epic.32962

Conference -Talk

Brunnabend, S. E. , Schröter, J. , Timmermann, R. , Rietbroek, R. , Kusche, J. , Dahle, C. , Flechtner, F. , Dietrich, R. and Fritsche, M. (2009)
Modeled ocean bottom pressure within a joint inversion to receive variations of ocean mass ,

3. SPP1257 Workshop, topic 4, Eitorf, Germany. June - 1. July 2009. .

hdl:10013/epic.32976

Article

Timmermann, R. , Danilov, S. , Schröter, J. , Böning, C. , Sidorenko, D. and Rollenhagen, K. (2009)
Ocean circulation and sea ice distribution in a finite element global sea ice -- ocean model ,

Ocean Modelling, doi:10.1016/j.ocemod.2008.10.009. .

doi:10.1016/j.ocemod.2008.10.009 , hdl:10013/epic.31908

Conference -Poster

Brunnabend, S. E. , Böning, C. , Rietbroek, R. , Dahle, C. , Kusche, J. , Flechtner, F. , Savcenko, R. , Bosch, W. , Timmermann, R. and Schröter, J. (2009)
On ocean density variations as observed by altimetry and GRACE ,

General Assembly of the European Geophysical Union, 11, EGU2009- .

hdl:10013/epic.32974

Conference -Poster

Böning, C. , Zotnicki, V. , Fetter, A. , Timmermann, R. , Danilov, S. and Schröter, J. (2009)
On the representation of Southern Ocean mass variability in GRACE-derived ocean bottom pressure anomalies ,

2009 AGU Fall Meeting18 December San Francisco, California, USA. .

hdl:10013/epic.33913

Conference -Talk

Böning, C. , Timmermann, R. , Macrander, A. , Schröter, J. and Boebel, O. (2009)
Southern Ocean variability derived from GRACE retrievals, model simulations and in-situ measurements ,

General Assembly of the European Geophysical Union, .

hdl:10013/epic.35858

Conference -Poster

Timmermann, R. , Danilov, S. and Schröter, J. (2009)
Validation of a global finite element sea ice-ocean model ,

Geophysical Research Abstracts, 11, EGU .

hdl:10013/epic.33750

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Conference -Talk

Brunnabend, S. E. , Schröter, J. , Timmermann, R. , Böning, C. , Rietbroek, R. , Kusche, J. , Dahle, C. and Flechtner, F. (2009)
Variations of ocean mass from a finite-element sea-ice ocean model (FESOM) ,

General Assembly of the European Geophysical Union, 11, EGU .

hdl:10013/epic.32972

Article

Hellmer, H. , Kauker, F. and Timmermann, R. (2009)
Weddell Sea anomalies: Excitation, propagation, and possible consequencs ,

Geophysical Research Letters, 36, L12605 .

doi:10.1029/2009GL038407 , hdl:10013/epic.32819

Preview

Conference -Talk

Hellmer, H. , Kauker, F. and Timmermann, R. (2008)
Antarctic ice shelf melting in the 21st century a model study ,

Forum for Research into Ice Shelf Processes (FRISP), 18. - 20. Sep. 2008, Losehill, Derbyshire, U.K.. .

hdl:10013/epic.31018

Conference -Talk

Hellmer, H. , Kauker, F. and Timmermann, R. (2008)
Circumpolar influence of Weddell Sea anomalies ,

EGU General Assembly (OS10), Vienna, Austria. .

hdl:10013/epic.29967

Conference -Invited talk

Schröter, J. , Timmermann, R. , Androsov, A. , Böning, C. , Danilov, S. , Huerta-Casas, A. , Maßmann, S. , Sidorenko, D. , Rollenhagen, K. and Wang, Q. (2008)
EGU2008-A-09296; A global finite-element sea ice and ocean model ,

General assembly of the European Geophysical Union, EGU2008-A-09296;. .

hdl:10013/epic.31084

Conference -Talk

Timmermann, R. , Charrassin, J. B. , Rintoul, S. R. , Hindell, M. , Roquet, F. , Sokolov, S. , Biuw, M. , Costa, D. , Boehme, L. , Lovell, P. , Coleman, R. , Meijers, A. , Meredith, M. , Park, Y. H. , Bailleul, F. , Tremblay, Y. , Bost, C. A. , McMahon, C. R. , Field, I. C. , Fedak, M. A. and Guinet, C. (2008)
Elephant Seals reveal frontal structure and sea ice formation rates in the Southern Ocean ,

SCAR/IASC Open Science Conference, 8.-11. July 2008, St. Petersburg, Russia. .

hdl:10013/epic.32320

Conference -Poster

Böning, C. , Timmermann, R. , Macrander, A. and Schröter, J. (2008)
Evaluation of ocean mass variability derived from different GRACE solutions ,

GEODÄTISCHE WOCHE, Bremen.9.-2.10.2008. .

hdl:10013/epic.31320

Conference -Invited talk

Schröter, J. , Danilov, S. , Sidorenko, D. , Wang, Q. , Timmermann, R. , Nerger, L. , Huerta-Casas, A. , Maßmann, S. , Böning, C. , Janjic Pfander, T. , Behrens, J. , Androssov, A. , Richter, F. , Hiller, W. , Harig, S. and Brunnabend, S. E. (2008)
FEOM, status and plans ,

Seventh International Workshop on Unstructured Grid Numerical Modelling of Coastal, Shelf and Ocean Flows, September 17-19 2008, Halifax, Canada.. .

hdl:10013/epic.31441

Conference -Talk

Schröder, D. , Heinemann, G. , Willmes, S. , Hebbinghaus, H. and Timmermann, R. (2008)
Implementation of COSMO for developing a high resolution fully coupled atmosphere ocean sea ice model to investigate polynya processes in the Laptev Sea ,

COSMO user meeting, Langen, Germany.03.2008. .

hdl:10013/epic.30345

Conference -Talk

van Leeuwen, P. J. , Terwisscha, A. , Schröter, J. , Danilov, S. , Timmermann, R. and Harig, S. (2008)
Improving sea-ice dynamics using a local SIR filter ,

Ocean Sciences in Orlando, MArch 2-7, Orlando, Florida, USA. .

hdl:10013/epic.31335

Conference -Talk

Böning, C. , Timmermann, R. , Macrander, A. and Schröter, J. (2008)
Ocean bottom pressure variability derived from different GRACE solutions ,

GRACE Science Team Meeting 2008, San Francisco, USA.-13. December 2008. .

hdl:10013/epic.31688

Article

Charrassin, J. B. , Hindell, M. , Rintoul, S. R. , Roquet, F. , Sokolov, S. , Biuw, M. , Costa, D. , Boehme, L. , Lovell, P. , Coleman, R. , Timmermann, R. , Meijers, A. , Meredith, M. , Park, Y. H. , Bailleul, F. , Tremblay, Y. , Bost, C. A. , McMahon, C. R. , Field, I. C. , Fedak, M. A. and Guinet, C. (2008)
Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals ,

Proceedings of the National Academy of Sciences (PNAS), 105 (33), pp. 11634-11639 .

doi:10.1073/pnas.0800790105 , hdl:10013/epic.30946

Conference -Talk

Brunnabend, S. E. , Schröter, J. , Rietbroek, R. , Kusche, J. , Dahle, C. , Flechtner, F. , Jansen, M. J. F. , Gunter, C. , Böning, C. and Timmermann, R. (2008)
Surface mass transport by joint inversion of modeled ocean bottom pressure, GRACE gravity models and GPS site displacements ,

Geodetic Week, Bremen, Germany. September - 02. October 2008. .

hdl:10013/epic.32969

Conference -Poster

Böning, C. , Timmermann, R. , Macrander, A. , Schröter, J. and Boebel, O. (2008)
Variability of the Antarctic Circumpolar Current derived from GRACE retrievals, model simulations and in-situ measurements ,

AGU Fall Meeting 2008, San Francisco, USA.-19. December 2008. .

hdl:10013/epic.31689

Conference -Poster

Schröder, D. , Hebbinghaus, H. , Heinemann, G. , Willmes, S. and Timmermann, R. (2008)
A high resolution fully coupled atmosphere ocean sea ice model to investigate polynya processes in the Laptev Sea ,

EGU General Assembly 2008, Vienna, Austria.-18.04.2008. .

hdl:10013/epic.30344

Preview

Article

Böning, C. , Timmermann, R. , Macrander, A. and Schröter, J. (2008)
A pattern-filtering method for the determination of ocean bottom pressure anomalies from GRACE solutions ,

Geophysical Research Letters, 35, L18611 .

doi:10.1029/2008GL034974 , hdl:10013/epic.31433

Preview

Conference -Poster

Rollenhagen, K. , Timmermann, R. , Janjic Pfander, T. and Schröter, J. (2007)
Assimilation of sea-ice velocity in a Finite Element Sea-Ice Model ,

North Atlantic Subpolar Gyre Workshop, Kiel, GermanyMarch 2007. .

hdl:10013/epic.27934

Conference -Poster

Schröter, J. , Sidorenko, D. , Harig, S. , Wang, Q. , Timmermann, R. , Rollenhagen, K. , Böning, C. , Janjic-Pfander, T. and Huerta-Casas, A. (2007)
FEOM, an unstructured mesh Finite Element Ocean Model ,

European Geosciences Union General Assembly, ViennaApril. .

hdl:10013/epic.31329

Conference -Poster

Böning, C. , Timmermann, R. , Macrander, A. and Schröter, J. (2007)
GRACE mass variations and ocean bottom pressure fluctuations in the South Atlantic ,

XXIV IUGG General Assembly, 02--13 July 2007, Perugia, Italy. .

hdl:10013/epic.27911

Conference -Talk

Böning, C. , Macrander, A. , Timmermann, R. , Boebel, O. and Schröter, J. (2007)
Global Validation of GRACE Gravity Measurements by in-situ and modeled Ocean Bottom Pressure ,

GRACE Science Team Meeting, 15--17 October 2007, Potsdam, Germany. .

hdl:10013/epic.30558

Conference -Poster

Fach, B. , Timmermann, R. , Meyer, B. , Wolf-Gladrow, D. and Bathmann, U. (2007)
Modeling Antarctic krill (Euphausia superba) development in the Lazarev Sea ,

EGU General Assembly, Vienna, Geophysical Research Abstracts 9 .

hdl:10013/epic.27935

Conference -Poster

Fach, B. , Timmermann, R. , Meyer, B. , Wolf-Gladrow, D. and Bathmann, U. (2007)
Modeling Antarctic krill (Euphausia superba) development in the Lazarev Sea. ,

4th International Zooplankton Production Symposium, 28.5 - 1.6.2007, Hiroshima, Japan. .

hdl:10013/epic.26078

Conference -Talk

Timmermann, R. (2007)
Modelling of the ice shelf-ocean interaction ,

Southern Ocean Physical Oceanography and Cryosphere Linkages (SOPHOCLES) meeting, Bergen, Norway, August 25-26 .

hdl:10013/epic.27931

Conference -Invited talk

Schröter, J. , Danilov, S. , Timmermann, R. , Sidorenko, D. , Wang, Q. and Harig, S. (2007)
Ocean Model Development at AWI ,

6th International Workshop on unstructured grid modelling in oceanography, Sept. 22-24 2007, Imperial College London. .

hdl:10013/epic.28049

Conference -Poster

Böning, C. , Timmermann, R. , Schröter, J. and Macrander, A. (2007)
Ocean bottom pressure and circulation in the South Atlantic ,

European Geosciences Union General Assembly, 1520 April 2007, Vienna, Austria. .

hdl:10013/epic.29972

Conference -Poster

Timmermann, R. , Böning, C. , Schröter, J. and Danilov, S. (2007)
On the representation of the Southern Ocean in a finite-element coupled sea ice-ocean model ,

Geophysical Research Abstracts 9, EGU2007-A-07368. .

hdl:10013/epic.27926

Conference -Poster

Timmermann, R. , Böning, C. , Danilov, S. and Schröter, J. (2007)
Representation of Southern Ocean circulation variability in a global finite-element coupled sea ice--ocean model ,

Polar Dynamics Conference, Bergen, Norway, August 29-31 .

hdl:10013/epic.27930

Conference -Talk

Rollenhagen, K. , Timmermann, R. , Janjic Pfander, T. and Schröter, J. (2007)
Sea Ice Drift Assimilation in a Finite Element Sea Ice Model using a Singular Evolutive Interpolated Kalman Filter ,

General Assembly of the European Geophysical Union, Vienna, Austria, April 2007. .

hdl:10013/epic.27933

Conference -Talk

Rollenhagen, K. , Timmermann, R. , Janjic Pfander, T. and Schröter, J. (2007)
Sea Ice Drift Data Assimilation in a Finite Element Sea Ice Model using a Singular Evolutive Interpolated Kalman Filter ,

IICWG Workshop on Sea Ice Modeling and Data Assimilation, OsloMay 2007. .

hdl:10013/epic.27932

Conference -Poster

Timmermann, R. , Böning, C. , Wang, Q. and Schröter, J. (2007)
Southern Ocean water mass formation in a finite-element coupled sea ice--ocean model ,

IUGG XXIV General Assembly, Perugia, Italy, July 1-13 .

hdl:10013/epic.27929

Conference -Talk

Jansen, D. , Timmermann, R. , Schodlok, M. , Rack, W. and Sandhäger, H. (2006)
Basal melting of tabular icebergs, model results ,

Antarctic Peninsula Climate Variability Workshop, 14-16 May, Boulder, USA. .

hdl:10013/epic.25421

Article

Losch, M. , Herlufsen, S. and Timmermann, R. (2006)
Effects of heterogeneous surface boundary conditions on parameterized oceanic deep convection ,

Ocean modelling, 13 (2), pp. 156-165 .

doi:10.1016/j.ocemod.2005.12.003 , hdl:10013/epic.23692

Preview

Conference -Poster

Losch, M. , Herlufsen, S. and Timmermann, R. (2006)
Effects of heterogeneous surface boundary conditions on parameterized oceanic deep convection ,

European Geosciences Union General Assembly, 0207 April 2006, Vienna, Austria. .

hdl:10013/epic.25235

Conference -Poster

Rollenhagen, K. , Timmermann, R. and Danilov, S. (2006)
A Finite Element Sea Ice Model of the Arctic: Comparison of Rheologies ,

European Geosciences Union General Assembly, 0207 April 2006, Vienna, Austria. .

hdl:10013/epic.25234

Preview

Conference -Poster

Böning, C. , Schröter, J. , Timmermann, R. , Danilov, S. , Macrander, A. and Wenzel, M. (2006)
GRACE Massenanomalien und Ozeanzirkulation ,

Geodetic Week 2006, 10 - 12 October 2006 . Munich, Germany .

hdl:10013/epic.27057

Article

Olbers, D. , Lettmann, K. and Timmermann, R. (2006)
Six circumpolar currents - on the forcing of the Antarctic Circumpolar Current by wind and mixing. ,

Ocean dynamics, 51 (1), pp. 12-31 .

doi:10.1007/s10236-006-0087-9 , hdl:10013/epic.24308

Preview

Conference -Talk

Timmermann, R. , Danilov, S. and Schröter, J. (2006)
A finite element global coupled sea ice -- ocean model ,

European Geosciences Union General Assembly, 0207 April 2006, Vienna, Austria. .

hdl:10013/epic.25233

Conference -Poster

Böning, C. , Timmermann, R. , Danilov, S. , Schröter, J. and Boebel, O. (2006)
A global finite element ocean model: Circulation and bottom pressure anomalies in the South Atlantic ,

European Geosciences Union General Assembly, 0207 April 2006, Vienna, Austria. .

hdl:10013/epic.24438

Preview

Conference -Invited talk

Timmermann, R. (2005)
Are finite elements an answer to the problems in sea-ice modelling? ,

ESF LESC Exploratory Workshop: New perspectives on sea-ice research for the next 10-20 years, 12-16 Dec., Delmenhorst, Germany. .

hdl:10013/epic.24339

Article

Timmermann, R. and Losch, M. (2005)
Erratum: Using the Mellor-Yamada mixing scheme in seasonally ice-covered seas - Corrigendum to: Parameterization of vertical mixing in the Weddell Sea [Ocean Modelling 6 (2004) 83-100] {10.1016/S1463-5003(02)00061-6} ,

Ocean modelling, 10 (3), pp. 369-372 .

doi:10.1016/j.ocemod.2004.11.001 , hdl:10013/epic.22041

Preview

Article

Timmermann, R. , Goosse, H. , Madec, G. , Fichefet, T. , Ethe, C. and Duliere, V. (2005)
On the representation of high latitude processes in the ORCA-LIM global coupled sea ice--ocean model ,

Ocean Modelling, 8(1-2), 175 .

doi:10.1016/j.ocemod.2003.12.009 , hdl:10013/epic.20564

Preview

Conference -Talk

Timmermann, R. and Danilov, S. (2005)
Towards a finite element coupled sea ice -- ocean model ,

The Fourth International Workshop on Unstructured Mesh Numerical Modelling of Coastal, Shelf and Ocean Flows, 10-12 Oct. 2005, Bremerhaven, Germany. .

hdl:10013/epic.24340

Article

Assmann, K. M. and Timmermann, R. (2005)
Variability of dense water formation in the Ross Sea ,

Ocean dynamics, 55 (2), pp. 68-87 .

doi:10.1007/s10236-004-0106-7 , hdl:10013/epic.20712

Preview

Conference -Invited talk

Lefebvre, W. , Goosse, H. , Timmermann, R. and Fichefet, T. (2004)
Influence of the Southern Annular Mode on the Antarctic sea ice-ocean system ,

EGU 1st General Assembly, 25.-30.April, Nice, France. .

hdl:10013/epic.21019

Article

Lefebvre, W. , Goosse, H. , Timmermann, R. and Fichefet, T. (2004)
Influence of the Southern Annular Mode on the sea ice-ocean system ,

Journal of Geophysical Research, 109, C09005 .

doi:10.1029/2004JC002403 , hdl:10013/epic.20781

Preview

Article

Timmermann, R. and Beckmann, A. (2004)
Parameterization of vertical mixing in the Weddell Sea ,

Ocean modelling, 6 (1), pp. 83-100 .

doi:10.1016/S1463-5003(02)0061-6 , hdl:10013/epic.16093

Preview

Conference -Talk

Timmermann, R. , Worby, A. , Goosse, H. and Fichefet, T. (2004)
Utilizing a coupled sea ice-ocean model to evaluate the ASPeCt sea ice thickness dataset ,

XXVIII SCAR Open Science Conference, 25.-31. July, Bremen, Germany. .

hdl:10013/epic.21504

Article

Timmermann, R. , Worby, A. , Goosse, H. and Fichefet, T. (2004)
Utilizing the ASPeCt sea ice thickess dataset to evaluate a global coupled sea ice-ocean model ,

Journal of geophysical research, 109, C07017 .

doi:10.1029/2003JC002242 , hdl:10013/epic.20562

Preview

Conference -Talk

Timmermann, R. , Worby, A. , Goosse, H. and Fichefet, T. (2004)
Utilzing the ASPeCt sea ice thickness dataset to validate a coupled sea ice-ocean model ,

EGU 1st General Assembly, 25.-30. April, Nice, France. .

hdl:10013/epic.21018

Article

Tin, T. , Timmermann, R. and Jeffries, M. (2004)
A field and numerical study of the evolution of sea ice thickness in the Ross Sea 1998/1999 ,

Journal of Glaciology, 50 (170), pp. 436-446 .

hdl:10013/epic.20636

Preview

Conference -Talk

Timmermann, R. , Fichefet, T. and Goosse, H. (2003)
Modelling the variability of the coupled ice-ocean system in the Southern Ocean ,

IUGG XXIII General Assembly, 30.Juni-11.July, Sapporo, Japan. .

hdl:10013/epic.21020

Conference -Talk

Timmermann, R. , Goosse, H. , Fichefet, T. and Madec, G. (2003)
On the representation of sea ice in a global coupled sea ice-ocean model. ,

EGS-AGU-EUG Joint Assembly, 6.-11.April, Nice, France. .

hdl:10013/epic.21021

Article

Hense, I. , Timmermann, R. , Beckmann, A. and Bathmann, U. (2003)
Regional and Interannual Variablity of Ecosystem Dynamics in the Southern Ocean ,

Ocean Dynamics, 53 , pp. 1-10 .

hdl:10013/epic.15645

Preview

Article

Hense, I. , Timmermann, R. , Beckmann, A. and Bathmann, U. (2003)
Regional ecosystem dynamics in the ACC: Simulations with a three-dimensional ocean-plankton model ,

Journal of Marine Systems, 42 , pp. 31-51 .

hdl:10013/epic.15644

Preview

Article

Timmermann, R. , Beckmann, A. and Hellmer, H. (2002)
Interannual variability of the circulation in the Filchner-Ronne Ice Shelf cavity ,

Ice and Climate News, 3 , pp. 3-4 .

hdl:10013/epic.16304

Article

Timmermann, R. , Beckmann, A. and Hellmer, H. (2002)
Simulation of ice-ocean dynamics in the Weddell Sea. Part I: Model configuration and validation ,

Journal of Geophysical ResearchC3), 107 .

doi:10.1029/2000JC000741 , hdl:10013/epic.14501

Preview

Article

Timmermann, R. , Hellmer, H. and Beckmann, A. (2002)
Simulations of ice-ocean dynamics in the Weddell Sea. 2. Interannual variability 1985 - 1993 ,

Journal of Geophysical ResearchC3) , 107 .

doi:10.1029/2000JC000742 , hdl:10013/epic.14510

Preview

Article

Beckmann, A. and Timmermann, R. (2001)
Circumpolar Influences on the Weddell Sea: Indication of an Antarctic Circumpolar Coastal Wave ,

Journal of Climate, 14 , pp. 3785-3792 .

hdl:10013/epic.14713

Preview

Article

Beckmann, A. , Timmermann, R. , Pereira, A. F. and Mohn, C. (2001)
The Effect of Flow at Maud Rise on the Sea Ice Cover - Numerical Experiments ,

Ocean Dynamics, 52 , pp. 11-25 .

hdl:10013/epic.14901

Preview

Article

Timmermann, R. , Beckmann, A. and Hellmer, H. (2001)
Parameterization of deep convection in the Weddell Sea ,

CLIVAR Exchanges, 6 (4), pp. 26-27 .

hdl:10013/epic.15422

Article

Beckmann, A. , Timmermann, R. , Pereira, A. F. and Mohn, C. (2001)
Sea Ice Anomalies in the Eastern Weddell Sea ,

CLIVAR Exchanges, 6 , pp. 15-21 .

hdl:10013/epic.15658

Article

Timmermann, R. , Beckmann, A. and Hellmer, H. (2001)
The role of sea ice in the fresh water budget of the Weddell Sea ,

Annals of Glaciology, 33 , pp. 419-424 .

hdl:10013/epic.14203

Preview

Article

Hense, I. , Bathmann, U. and Timmermann, R. (2000)
Plankton dynamics in frontal systems of the Southern Ocean ,

Journal of Marine Systems 27:, pp. 235-252 .

hdl:10013/epic.11944

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Thesis -PhD

Timmermann, R. (2000)
Wechselwirkungen zwischen Eis und Ozean im Weddellmeer - Studien mit einem gekoppelten Eis-Ozean-Modell des Südpolarmeeres ,

PhD thesis, Uni Bremen.

hdl:10013/epic.14913

Preview

Conference -Poster

Timmermann, R. , Beckmann, A. and Hellmer, H. (2000)
The role of sea ice in the fresh water budget of the Weddell Sea ,

International Symposium on Sea Ice and its Interaction with the Ocean, Atmosphere and Biosphere, 19.-23.Juni, Fairbanks, Alaska. .

hdl:10013/epic.21022

Conference -Talk

Timmermann, R. , Beckmann, A. and Hellmer, H. (1999)
Designing a coupled sea ice-ocean model of the Weddell Sea. Part II: Sea Ice. ,

Sigma Coordinate Ocean Model Meeting, September, Maine, USa. .

hdl:10013/epic.21024

Article

Timmermann, R. , Lemke, P. and Kottmeier, C. (1999)
Formation and maintenance of a polynya in the Weddell Sea ,

Journal of Physical Oceanography, 29 (6), pp. 1251-1264 .

hdl:10013/epic.13724

Preview

Conference -Talk

Timmermann, R. and Beckmann, A. (1999)
The influence of Maud Rise on ocean circulation and sea ice distribution in the Weddell Sea ,

IUGG XXII General Assembly, 19.-30.July, Birmingham, GB. .

hdl:10013/epic.21023

Conference -Talk

Timmermann, R. , Beckmann, A. and Hellmer, H. (1999)
The influence of Maud Rise on ocean circulation and sea ice distribution in the Weddell Sea ,

LDEO NOAA/CORC II Annual Workshop 1999: "The Role of Sea Ice in Present and Past Southern Ocean Climate Variability", Lamont, USA. .

hdl:10013/epic.21025

Article

Beckmann, A. , Hellmer, H. and Timmermann, R. (1999)
A numerical model of the Weddell Sea: Large scale circulation and water mass distribution ,

Journal of Geophysical ResearchC10), 104 , pp. 23375-23391 .

hdl:10013/epic.10816

Preview

Conference -Talk

Beckmann, A. , Hellmer, H. and Timmermann, R. (1998)
A Numerical Model of the Weddell Sea: Large Scale Circulation and Water Mass Distribution ,

EGS 23rd General Assembly, Nice, France. .

hdl:10013/epic.21027

Conference -Poster

Timmermann, R. , Beckmann, A. and Hellmer, H. (1998)
Sea Ice in a Coupled Ice-Ocean Model Focussed on the Weddell Sea ,

30th International Liege Colloquium on Ocean Hydrodynamics, Liege, Belgium. .

hdl:10013/epic.21028

Conference -Talk

Timmermann, R. and Beckmann, A. (1998)
Seasonal variability of sea ice in a coupled ice-ocean model focussed on the Weddell Sea ,

EGS 23rd General Assembly, April, Nice, France. .

hdl:10013/epic.21026

Thesis -Diplom

Timmermann, R. (1997)
Entstehung und Erhaltung einer Polynja im Weddellmeer ,

Diplom thesis, Uni Bremen.

hdl:10013/epic.15002

Preview

This list was generated on Fri Dec 13 04:32:50 2013 CET.