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Number of items: 37.

Article
Zampieri, L. ORCID: https://orcid.org/0000-0003-1703-4162, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Fröhle, J. , Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Hunke, E. C. and Goessling, H. F. ORCID: https://orcid.org/0000-0001-9018-1383 (2021)
Impact of Sea-Ice Model Complexity on the Performance of an Unstructured-Mesh Sea-Ice/Ocean Model under Different Atmospheric Forcings ,
Journal of Advances in Modeling Earth Systems, 13 (5), e2020MS002438-e2020MS002438 .
doi:10.1029/2020MS002438 , hdl:10013/epic.c1953100-420a-4621-8bd1-3fc2c19d2656
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Conference -Talk
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X and Gerdes, R. (2019)
Simultaneous optimization of Arctic sea-ice model parameters by a genetic algorithm ,
9th International workshop on sea ice modelling, data assimilation and validation, Bremen, Germany, 17 June 2019 - 19 June 2019 .
hdl:10013/epic.9723efd7-d850-4c06-bd4f-2549726b1775

Article
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X and Gerdes, R. (2019)
Covariance of optimal parameters of an Arctic sea ice-ocean model ,
Monthly Weather Review .
doi:10.1175/MWR-D-18-0375.1 , hdl:10013/epic.9ca378b1-a76d-40d2-9acd-96226199da98

Article
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X and Gerdes, R. (2019)
Simultaneous Parameter Optimization of an Arctic Sea Ice–Ocean Model by a Genetic Algorithm ,
Monthly Weather Review .
doi:10.1175/MWR-D-18-0360.1 , hdl:10013/epic.0ca56b92-99be-426c-80a7-c29923f9b724

Conference -Poster
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X and Gerdes, R. (2018)
A covariant feature of optimal parameters for Arctic sea ice model ,
REKLIM workshop 2018, Boppard, Germanay, 15 May 2018 - 17 May 2018 .
hdl:10013/epic.4743e810-5ca5-49ee-8e23-525a62ca673b

Conference -Talk
Behrendt, A. ORCID: https://orcid.org/0000-0001-5746-1631, Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Rabe, B. ORCID: https://orcid.org/0000-0001-5794-9856 and Schauer, U. (2018)
UDASH – Unified Database for Arctic and Subarctic Hydrography ,
European Geosciences Union General Assembly 2018, Vienna, Austria, 8 April 2018 - 13 April 2018 .
hdl:10013/epic.91147887-6dcc-4ca3-96cf-87bdf848273d

Conference -Poster
Behrendt, A. ORCID: https://orcid.org/0000-0001-5746-1631, Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Rabe, B. ORCID: https://orcid.org/0000-0001-5794-9856 and Schauer, U. (2018)
UDASH – Unified Database for Arctic and Subarctic Hydrography ,
27. Internationale Polartagung, Rostock, 25 March 2018 - 29 March 2018 .
hdl:10013/epic.4331ce83-d9e2-4824-af21-64890d00fe2c

Article
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X, Rabe, B. ORCID: https://orcid.org/0000-0001-5794-9856, Timmermans, M. L. , Behrendt, A. ORCID: https://orcid.org/0000-0001-5746-1631, Gerdes, R. , Schauer, U. , Shimada, K. , Cho, K. H. and Kikuchi, T. (2018)
Decorrelation scales for Arctic Ocean hydrogpraphy - Part I: Amerasian Basin ,
Ocean Science, 14 , pp. 161-185 .
doi:10.5194/os-14-161-2018 , hdl:10013/epic.90544b65-f2ba-4c57-8c3f-9c7658850da6
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Conference -Talk
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X and Gerdes, R. (2018)
A simultaneous optimization of Arctic sea ice model parameters by genetic algorithm ,
5th International symposium on Arctic research, Tokyo, Japan, 16 January 2018 - 18 January 2018 .
hdl:10013/epic.408ad8e3-71c7-4af8-aae3-74d432e65900

Article
Behrendt, A. ORCID: https://orcid.org/0000-0001-5746-1631, Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Rabe, B. ORCID: https://orcid.org/0000-0001-5794-9856 and Schauer, U. (2018)
UDASH – Unified Database for Arctic and Subarctic Hydrography ,
Earth System Science Data, 10 (2), pp. 1119-1138 .
doi:10.5194/essd-10-1119-2018 , hdl:10013/epic.e7f963f1-b6c0-4e9a-a09f-82a3e3e9bf36
[thumbnail of essd-10-1119-2018.pdf]
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Conference -Talk
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X and Gerdes, R. (2017)
A simultaneous optimization of Arctic sea ice model parameters by genetic algorithm ,
8th international workshop on sea ice modelling, data assimilation and verification, Bergen, Norway, 1 November 2017 - 3 November 2017 .
hdl:10013/epic.82193d16-7ffb-46d2-aa20-8a0c1ae256ab

Conference -Poster
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X and Gerdes, R. (2017)
Decorrelation scale for Arctic Ocean Hydrography. Part I: Amerasian Basin ,
REKLIM Workshop, Fleesensee, 27 March 2017 - 29 March 2017 .
hdl:10013/epic.4100e2f0-875a-44d2-ae5c-60c7569e31a8

Conference -Talk
Behrendt, A. ORCID: https://orcid.org/0000-0001-5746-1631, Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Rabe, B. ORCID: https://orcid.org/0000-0001-5794-9856 and Schauer, U. (2017)
DASH - Database of Arctic and Subarctic Hydrography ,
ASOF Meeting, Sopot, Poland, 20 March 2017 - 22 March 2017 .
hdl:10013/epic.51257

Conference -Talk
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Behrendt, A. ORCID: https://orcid.org/0000-0001-5746-1631, Cho, K. H. , Gerdes, R. , Hölemann, J. ORCID: https://orcid.org/0000-0001-5102-4086, Janout, M. ORCID: https://orcid.org/0000-0003-4908-2855, Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Kikuchi, T. , Psarev, S. , Rabe, B. ORCID: https://orcid.org/0000-0001-5794-9856, Schauer, U. , Shimada, K. , Somavilla Cabrillo, R. and Timmermans, M. L. (2017)
Decorrelation scales for Arctic Ocean Hydrography: Part I. Amerasian Basin ,
ASOF workshop, Sopot, Poland, 20 March 2017 - 22 March 2017 .
hdl:10013/epic.e87208e7-1333-44a2-bc15-a93547b71f35

Conference -Poster
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Gerdes, R. , Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X and Köberle, C. (2016)
A simultaneous optimization of sea ice model parameters by genetic algorithm ,
REKLIM workshop, Merseburg, Germany, 27 April 2016 - 29 April 2016 .
hdl:10013/epic.49098

Conference -Talk
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kwok, R. , Gerdes, R. , Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005 and Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X (2016)
Empirical error functions for monthly-mean Arctic sea-ice drift ,
7th IICWG International Workshop on Sea Ice Data Assimilation and Verification, Frascati, Italy, 5 April 2016 - 7 April 2016 .
hdl:10013/epic.49095

Conference -Talk
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kwok, R. , Gerdes, R. , Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005 and Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X (2015)
Uncertainty assessment of Arctic summer ice drift for data assimilation ,
REKLIM workshop, Neumuenster, Germany, 18 May 2015 - 20 May 2015 .
hdl:10013/epic.46099

Article
Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Kaminski, T. , Ricker, R. ORCID: https://orcid.org/0000-0001-6928-7757, Toudal-Pedersen, L. , Dybkjaer, G. , Melsheimer, C. , Eastwood, S. , Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X and Gerdes, R. (2015)
Seasonal sea ice predictions for the Arctic based on assimilation of remotely sensed observations ,
The Cryosphere Discussions, 9 (5), pp. 5521-5554 .
doi:10.5194/tcd-9-5521-2015 , hdl:10013/epic.49087

Article
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Gerdes, R. , Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005 and Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X (2015)
Empirical error functions for monthly mean Arctic sea-ice drift ,
Journal of Geophysical Research: Oceans, 120 (11), pp. 7450-7475 .
doi:10.1002/2015JC011151 , hdl:10013/epic.49088

Article
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kwok, R. , Gerdes, R. , Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005 and Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X (2015)
Uncertainty of Arctic summer ice drift assessed by high-resolution SAR data ,
Journal of Geophysical Research: Oceans, 120 (8), pp. 5285-5301 .
doi:10.1002/2015JC010810 , hdl:10013/epic.49089

Conference -Talk
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Gerdes, R. , Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X and Koeberle, C. (2014)
Development of ocean-sea ice model for the Arctic by model-data synthesis ,
REKLIM International Conference, Berlin, 6 October 2014 - 9 October 2014 .
hdl:10013/epic.45057

Conference -Talk
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Lavergne, T. , Girard-Ardhuin, F. , Kimura, N. , Tschudi, M. , Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X and Gerdes, R. (2014)
An intercomparison of Arctic ice drift products to deduce uncertainty estimates ,
6th International Workshop on Sea Ice Modelling and Data Assimilation, Toulouse, 15 September 2014 - 16 September 2014 .
hdl:10013/epic.45056

Article
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Lavergne, T. , Girard-Ardhuin, F. , Kimura, N. , Tschudi, M. A. , Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X and Gerdes, R. (2014)
An intercomparison of Arctic ice drift products to deduce uncertainty estimates ,
Journal of Geophysical Research: Oceans, 119 (8), pp. 4887-4921 .
doi:10.1002/2013JC009724 , hdl:10013/epic.45049
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Article
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Gerdes, R. , Koeberle, C. and Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X (2013)
A comparison between gradient descent and stochastic approaches for parameter optimization of a sea ice model ,
Ocean Science, 9 (4), pp. 609-630 .
doi:10.5194/os-9-609-2013 , hdl:10013/epic.41891
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Conference -Talk
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Gerdes, R. , Köberle, C. and Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X (2013)
Application of genetic algorithms to a parameter optimization of a coupled ocean-sea ice model in the Arctic Ocean ,
EGU General Assembly 2013, Vienna, Austria, 7 April 2013 - 12 April 2013 .
hdl:10013/epic.41892

Conference -Talk
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Gerdes, R. , Köberle, C. and Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X (2013)
Application of genetic algorithms to a parameter optimization of a sea ice model ,
3rd REKLIM workshop, Bad Honnef, Germany, 16 April 2013 - 18 April 2013 .
hdl:10013/epic.41894

Conference -Talk
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Gerdes, R. , Köberle, C. and Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X (2012)
Exploring a parameter optimization method for sea ice model ,
3rd REKLIM Conference "Klimawandel in Regionen", Potsdam, Germany, 3 September 2012 - 4 September 2012 .
hdl:10013/epic.41893

Article
Shigemitsu, m. , Okunishi, T. , Nishioka, J. , Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Hashioka, T. , Aita-Noguchi, M. , Smith, L. , Yoshie, N. , Okada, N. and Yamanaka, Y. (2012)
Development of a one-dimensional ecosystem model including the iron cycle applied to the Oyashio region, western subarctic Pacific ,
Journal of Geophysical Research-Oceans, 117 (C06021) .
doi:10.1029/2011JC007689 , hdl:10013/epic.42198

Article
Okunishi, T. , Ito, S. i. , Hashioka, T. , Sakamoto, T. , Yoshie, N. , Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Yara, Y. , Okada, N. and Yamanaka, Y. (2012)
Impacts of climate change on growth, migration and recruitment success of Japanese sardine (Sardinops melanostictus) in the western North Pacific. ,
Climate Change, 115 (3-4), pp. 485-503 .
doi:10.1007/s10584-012-0484-7 , hdl:10013/epic.42195

Conference -Poster
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Gerdes, D. , Köberle, C. and Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X (2012)
Assimilation of ice-ocean system in the Arctic: 2007-2008 ,
REKLIM workshop, Lueneburg, Germany, 19 March 2012 - 21 March 2012 .
hdl:10013/epic.41895

Article
Hirata, T. , Saux-Picart, S. , Hashioka, T. , Aita-Noguchi, M. , Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Shigemitsu, M. , Allen, I. and Yamanaka, Y. (2012)
A comparison between phytoplankton community structures derived from a global 3D ecosystem model and satellite observation ,
Journal of Marine Systems, 109-11 , pp. 129-137 .
doi:10.1016/j.jmarsys.2012.01.009 , hdl:10013/epic.42196

Conference -Talk
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Kauker, F. ORCID: https://orcid.org/0000-0002-7976-3005, Gerdes, R. , Köberle, C. and Karcher, M. ORCID: https://orcid.org/0000-0002-9587-811X (2011)
Effects of ice-displacement data on the assimilated field of the Arctic Ocean ,
1st REKLIM workshop, Bremerhaven, Germany, 29 March 2011 - 30 March 2011 .
hdl:10013/epic.1b06b68f-6edb-4fd4-864b-26a8e554f880

Article
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Hashioka, T. , Suzuki, T. , Yoshie, N. , Okunishi, T. , Aita-Noguchi, M. , Sakamoto, T. , Ishida, A. , Okada, N. and Yamanaka, Y. (2010)
Effect of eddy transport on the nutrient supply into the euphotic zone simulated in an eddy-permitting ocean ecosystem model ,
Journal of Maine Systems, 83 , pp. 67-87 .
doi:10.1016/j.jmarsys.2010.07.002 , hdl:10013/epic.42199

Article
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875, Minobe, S. , Motoi, T. and Chan, W. L. (2010)
A semi-analytical model of barotropic and baroclinic flows for an open Panama Gateway ,
Dynamics of Atmospheres and Oceans, 50 (1), pp. 55-77 .
doi:10.1016/j.dynatmoce.2009.10.001 , hdl:10013/epic.f4a5c7ff-aa25-4c17-a634-8da922e60911

Article
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875 and Shimada, K. (2007)
Northward Transport of Pacific Summer Water along the Northwind Ridge in the western Arctic Ocean ,
Journal of Oceanography, 63 , pp. 363-378 .
doi:10.1007/s10872-007-0035-4 , hdl:10013/epic.1e7fd44a-6b8e-412d-b73b-297ecf2cd136

Article
Moti, T. , Chan, W. L. , Minobe, S. and Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875 (2005)
North Pacific halocline and cold climate induced by Panamanian Gateway closure in a coupled ocean-atmosphere GCM ,
Geophysical Research Letters, 32 (L10618) .
doi:10.1029/2005GL02 , hdl:10013/epic.97ed8896-a020-48e5-a131-e8a0f8801442

Article
Sumata, H. ORCID: https://orcid.org/0000-0002-2832-2875 and Kubokawa, A. (2001)
Numerical Study of Eastern Boundary Ventilation and its effects on the Thermocline Structure ,
Journal of Physical Oceanography, 31 (10), pp. 3002-3019 .
doi:10.1175/1520-0485 , hdl:10013/epic.b652232a-bd47-4d27-8913-492a98435a0b

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