Items where Author is "Karcher, Michael"

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Number of items: 124.

Article

Jahn, A. , Aksenov, Y. , de Cuevas , B. , de Steur, L. , Haekkinen, S. , Hansen, E. , Herbaut, C. , Houssais, M. N. , Karcher, M. , Kauker, F. , Lique, C. , Nguyen, A. , Pemberton, P. , Worthen , D. and Zhang, J. (2012)
Arctic Ocean freshwater: How robust are model simulations? ,

Journal of Geophysical Research-Oceans, AMER GEOPHYSICAL UNION, 117 (C00D16) .

doi:10.1029/2012JC007907 , hdl:10013/epic.39854

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Article

Karcher, M. , Smith, J. N. , Kauker, F. , Gerdes, R. and Smethie Jr, W. (2012)
Recent changes in Arctic Ocean circulation revealed by 129-Iodine observations and modelling ,

Journal of Geophysical Research - Oceans., AGU .

doi:10.1029/2011JC007513 , hdl:10013/epic.39852

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Article

Karcher, M. , Beszczynska-Möller, A. , Kauker, F. , Gerdes, R. , Heyen, S. , Rudels, B. and Schauer, U. (2011)
Arctic Ocean warming and its consequences for the Denmark Strait overflow ,

J. Geophys. Res., 116, C02037 .

doi:10.1029/2010JC006265 , hdl:10013/epic.36311

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Article

Beszczynska-Möller, A. , Woodgate, R. A. , Lee, C. , Melling, H. and Karcher, M. (2011)
A Synthesis of Exchanges Through the Main Oceanic Gateways to the Arctic Ocean, ,

in: The Changing Arctic Ocean: Special Issue on the International Polar Year (20072009), Oceanography, 24(3)99., 82 .

doi:10.5670/oceanog.2011.59 , hdl:10013/epic.38140

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Article

Rabe, B. , Karcher, M. , Schauer, U. , Toole, J. M. , Krischfield, R. A. , Pisarev, S. , Kauker, F. , Gerdes, R. and Kikuchi, T. (2011)
An assessment of Arctic Ocean freshwater content changes from the 1990s to the 2006-2008 period ,

Deep-Sea Research I, 58185, 173 .

doi:10.1016/j.dsr.2010.12.002 , hdl:10013/epic.36728

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Article

Karcher, M. , Harms, I. , Standring, W. , Dowdall, M. and Strand, P. (2010)
On the Potential for Climate Change Impacts on Marine Anthropogenic Radioactivity in the Arctic Regions ,

Marine Pollution Bulletin, Volume 60, Issue 8, August 2010, Pages 1151-1159 .

doi:10.1016/j.marpolbul.2010.05.003 , hdl:10013/epic.35346

Article

Kauker, F. , Kaminski, T. , Karcher, M. , Giering, R. , Gerdes, R. and Voßbeck, M. (2009)
Adjoint analysis of the 2007 all time Arctic sea-ice minimum ,

Geophysical Research Letters .

doi:10.1029/2008GL036323 , hdl:10013/epic.31900

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Article

de Steur, L. , Hansen, E. , Gerdes, R. , Karcher, M. , Fahrbach, E. and Holfort, J. (2009)
Freshwater Fluxes in the East Greenland Current: A decade of observations ,

Geophysical Research Letters, 36, L23611. .

doi:10.1029/2009GL041278 , hdl:10013/epic.33853

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Article

Rabe, B. , Schauer, U. , Mackensen, A. , Karcher, M. , Hansen, E. and Beszczynska-Möller, A. (2009)
Freshwater components and transports in the Fram Strait: - recent observations and changes since the late 1990s ,

Ocean Sci., 5 , pp. 219-233 .

hdl:10013/epic.32890

Article

Kauker, F. , Gerdes, R. , Karcher, M. , Kaminski, T. , Giering, R. and Vossbeck, M. (2009)
Retrospective Summary Comments SIO 2009 AWI/FastOpt/OASys ,

Sea Ice Outlook: monthly reports June, July, August, Retrospective Summary. .

hdl:10013/epic.36313

Article

Kauker, F. , Gerdes, R. and Karcher, M. (2008)
Arctic Sea Ice in summer 2008 - an outlook ,

Sea Ice Outlook: monthly reports .

hdl:10013/epic.30865

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Article

Kauker, F. , Köberle, C. , Gerdes, R. and Karcher, M. (2008)
Modeling the 20th century Arctic Ocean/Sea Ice system: Reconstruction of surface forcing ,

Journal of Geophysical Research, 113, C09027. .

doi:10.1029/2006JC004023 , hdl:10013/epic.31554

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Article

Dickson, R. R. , Rudels, B. , Dye, S. , Karcher, M. , Meincke, J. and Yashayaev, I. (2007)
Current Estimates of Freshwater Flux through Arctic & Subarctic seas. ,

Progress in oceanography, 73 (3), pp. 210-230 .

doi:10.1016/j.pocean.2006.12.003 , hdl:10013/epic.26912

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Article

Häkkinen, S. , Dupont, F. , Karcher, M. , Kauker, F. and Zhang, J. (2007)
Model simulation of Greenland Sea upper-ocean variability ,

Journal of geophysical research-oceans, 112, C06S90 .

doi:10.1029/2006JC003687 , hdl:10013/epic.26914

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Article

Karcher, M. , Kauker, F. , Gerdes, R. , Hunke, E. and Zhang, J. (2007)
On the Dynamics of Atlantic Water circulation in the Arctic Ocean ,

Journal of geophysical research-oceans, 112, C04S02 .

doi:10.1029/2006JC003630 , hdl:10013/epic.26592

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Article

Dorn, W. , Dethloff, K. , Rinke, A. , Frickenhaus, S. , Gerdes, R. , Karcher, M. and Kauker, F. (2007)
Sensitivities and uncertainties in a coupled regional atmosphere-ocean-ice model with respect to the simulation of Arctic sea ice ,

Journal of Geophysical Research, 112, D10118 .

doi:10.1029/2006JD007814 , hdl:10013/epic.26687

Article

Holloway, G. , Dupont, F. , Golubeva, E. , Häkkinen, S. , Hunke, E. , Karcher, M. , Kauker, F. , Maltrud, M. , Morales Maqueda, M. , Maslowski, W. , Platov, G. , Stark, D. , Steele, M. , Worthen, D. and Zhang, J. (2007)
Water properties and circulation in Arctic Ocean models ,

Journal of geophysical research-oceans, 112, C04S03 .

doi:10.1029/2006JC003642 , hdl:10013/epic.25061

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Article

Karcher, M. , Gerdes, R. and Kauker, F. (2006)
Modeling of δ18O and 99Tc dispersion in Arctic and subarctic seas ,

ASOF Newsletter,Issue No 5, April 2006 .

hdl:10013/epic.24814

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Article

Richter-Menge, J. , Overland, J. , Proshutinsky, A. , Romanowsky, V. , Gascard, J. C. , Karcher, M. , Maslanik, J. , Perovich, D. , Shiklomanov, A. and Waller, D. (2006)
The Poles - Arctic ,

in: State of the Climate 2005, K.A.Shein (Ed.), B. Am. Meteorol. Soc., 87, S46-S53, NOAA/NESDIS/NCDC & American Meteorological Society. .

hdl:10013/epic.25464

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Article

Dorn, W. , Dethloff, K. , Rinke, A. , Frickenhaus, S. , Gerdes, R. , Karcher, M. and Kauker, F. (2006)
Sea-ice simulations with AWI's coupled regional atmosphere-ocean-ice model HIRHAM-NAOSIM ,

in: Global Implications of Arctic Climate Processes and Feedbacks (edited by A. Rinke and K. Dethloff), Reports on Polar and Marine Research, Vol. 520, p., pp. 41-44 .

hdl:10013/epic.24180

Article

Richter-Menge, J. , Overland, J. , Proshutinsky, A. , Romanovsky, V. , Bengtsson, L. , Brigham, L. , Dyurgerov, M. , Gascard, J. C. , Gerland, S. , Graversen, R. , Haas, C. , Karcher, M. , Kuhry, P. , Maslanik, J. , Melling, H. , Maslowski, W. , Morison, J. , Perovich, D. , Przybylak, R. , Rachold, V. , Rogor, I. , Shiklomanov, A. , Stroeve, J. , Walker, D. and Walsh, J. (2006)
State of the Arctic Report. ,

NOAA OAR Special Report, NOAA/OAR/PMEL, Seattle, WA .

hdl:10013/epic.25952

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Article

Proshutinsky, A. , Yang, J. , Gerdes, R. , Karcher, M. , Kauker, F. , Hakkinen, S. , Hibler, W. , Holland, D. , Maqueda, M. , Holloway, G. , Hunke, E. , Maslowski, W. , Steele, M. and Zhang, J. (2005)
Arctic Ocean Study - Synthesis of Model Results and Observations ,

EOS, Transactions, American Geophysical Union, 368 .

hdl:10013/epic.23311

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Article

Karcher, M. , Gerdes, R. , Kauker, F. , Köberle, C. and Yashayev, I. (2005)
Arctic Ocean change heralds North Atlantic freshening ,

Geophysical research letters, 32(21), L21606 .

doi:10.1029/2005GL023861 , hdl:10013/epic.22504

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Article

Dowdall, M. , Gerland, S. , Karcher, M. , Gwynn, J. P. , Rudjord, A. L. , Kolstadt, K. and Christensen, G. (2005)
Geostatistical Methods Applied to Sampling Optimisation for the Temporal Monitoring of Technetium-99 in the Arctic Marine Environment. ,

StrålevernRapport 2005:19. Østerås: Norwegian Radiation Protection Authority, 2005 .

hdl:10013/epic.23719

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Article

Kauker, F. , Gerdes, R. , Karcher, M. and Köberle, C. (2005)
Impact of North Atlantic Current changes on the Nordic Seas and the Arctic Ocean ,

Journal of geophysical research-oceans, Vol. 110(C12), C12002 .

doi:10.1029/2004JC002624 , hdl:10013/epic.21400

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Article

Harms, I. and Karcher, M. (2005)
Kara Sea freshwater dispersion and export in the late 1990s ,

Journal of geophysical research-oceans, 110, C08007 .

doi:10.1029/2004JC002744 , hdl:10013/epic.21826

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Article

Drange, H. , Gerdes, R. , Gao, Y. , Karcher, M. , Kauker, F. and Bentsen, M. (2005)
Ocean General Circulation Modelling of the Nordic Seas ,

in: The Nordic Seas: An Integrated Perspective, Drange, Dokken, Furevik, Gerdes and Berger (Eds.), AGU Monograph 158,American geophysical Union, Washington DC, pp., pp. 199-220 .

hdl:10013/epic.22799

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Article

Polyakov, I. V. , Beszczynska, A. , Carmack, E. C. , Dmitrenko, I. A. , Fahrbach, E. , Frohlov, I. E. , Gerdes, R. , Hansen, E. , Holfort, J. , Ivanov, V. V. , Johnson, M. A. , Karcher, M. , Kauker, F. , Morison, J. , Orvik, K. A. , Schauer, U. , Simmons, H. L. , Skagseth, O. , Sokolov, V. T. , Steele, M. , Timokhov, L. A. , Walsh, D. and Walsh, J. E. (2005)
One more step toward a warmer Arctic ,

Geophysical research letters, 32, LI7605 .

doi:10.1029/2005GL023740 , hdl:10013/epic.23310

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Article

Dowdall, M. , Gerland, S. , Karcher, M. , Gwynn, J. P. , Rudjord, A. L. and Kolstad, A. K. (2005)
Optimization of sampling for the temporal monitoring of Technetium-99 in the Arctic marine environment ,

Journal of environmental radioactivity, Vol 84/1 pp., pp. 111-130 .

doi:10.1016/j.jenvrad.2005.04.010 , hdl:10013/epic.22064

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Article

Simstich, J. , Harms, I. , Karcher, M. , Erlenkeuser, H. , Stanovoy, V. , Kodina, L. , Bauch, D. and Spielhagen, R. F. (2005)
Recent freshening in the Kara sea (Siberia) recorded by stable isotopes in Arctic bivalve shells, ,

Journal of geophysical research-oceans, 110, C08006 .

doi:10.1029/2004JC002722 , hdl:10013/epic.21769

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Article

Gerdes, R. , Hurka, J. , Karcher, M. , Kauker, F. and Köberle, C. (2005)
Simulated history of convection in the Greenland and Labrador seas 1948-2001 ,

AGU monograph Climate Variability of the Nordic Seas, Bjerknes Centre for Climate Research, Bergen, Norway , pp. 221-238 .

hdl:10013/epic.20343

Article

Uotila, P. , Holland, D. M. , Morales Maqueda, M. A. , Häkkinen, S. , Holloway, G. , Karcher, M. , Kauker, F. , Steele, M. , Yakovlev, N. , Zhang, J. and Proshutinsky, A. (2005)
An energy-diagnostics intercomparison of coupled ice-ocean Arctic models ,

Ocean modelling, 11 (1), 1-27 .

doi:10.1016/j.ocemod.2004.11.003 , hdl:10013/epic.21473

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Article

Steiner, N. , Holloway, G. , Gerdes, R. , Haekkinen, S. , Holland, D. , Karcher, M. , Kauker, F. , Maslowski, W. , Proshutinsky, A. , Steele, M. and Zhang, J. (2004)
Comparing modeled streamfunction, heat and freshwater content in the Arctic Ocean ,

Ocean modelling, 6 , pp. 265-284 .

doi:10.1016/S1463-5003(03)00013-1 , hdl:10013/epic.16240

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Article

Karcher, M. , Harms, I. H. and Kauker, F. (2004)
Tracer Studies with Arctic and Subarctic Coupled Ice-ocean Models: Dispersion of Radionuclides and Oxygen Isotopes ,

International Conference on Isotopes in Environmental Studies - Aquatic Forum 2004, Book of Extended Synopses,IAEA-CN-118, pp. 75-76 .

hdl:10013/epic.22008

Article

Karcher, M. , Gerland, S. , Harms, I. , Iosjpe, M. , Heldal, H. , Kershaw, P. J. and Sickel, M. (2004)
The dispersion of technetium-99 in the Nordic Seas and the Arctic Ocean: a comparison of model results and observations ,

Journal of environmental radioactivity, 74, 1-3, 2004 , pp. 185-198 .

hdl:10013/epic.18648

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Article

Karcher, M. , Gerdes, R. , Kauker, F. and Köberle, C. (2003)
Arctic warming - Evolution and Spreading of the 1990s warm event in the Nordic Seas and the Arctic Ocean, ,

Journal of Geophysical Research, Vol. 108(C2) .

doi:10.1029/2001JC001265 , hdl:10013/epic.15375

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Article

Karcher, M. , Kulakov, M. , Pivovarov, S. , Schauer, U. , Kauker, F. and Schlitzer, R. (2003)
Atlantic Water flow to the Kara Sea - comparing model results with observations ,

in: 'Siberian River Runoff in the Kara Sea: Characterisation, Quantification, Variability and Environmental Significance', Stein, Fahl, Fütterer, Galimov (Eds.), Elsevier, Proceedings in Marine Science, pp. 47-69 .

hdl:10013/epic.15659

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Article

Gerdes, R. , Karcher, M. , Kauker, F. and Schauer, U. (2003)
Causes and development of repeated Arctic Ocean warming events ,

Geophysical research letters, 30 (19) .

doi:10.1029/2003GL018080 , hdl:10013/epic.19596

Article

Uotila, P. , Holland, D. M. , Haekkinen, S. , Holloway, G. , Steiner, N. , Karcher, M. , Kauker, F. , Steele, M. , Zhang, J. , Yakovlev, N. and Proshutinsky, A. (2003)
An Energy Diagnostics Intercomparison of Coupled Ice-Ocean Arctic Models ,

Proceedings of ACSYS Final Science Conference "Progress in Understanding the Arctic Climate System", 11-14 November 2003, AARI St. Petersburg, Russia .

hdl:10013/epic.20264

Article

Gerland, S. , Lind, B. , Dowdall, M. , Karcher, M. and Kolstad, A. K. (2003)
Technetium-99 in seawater in the West Spitsbergen Current and adjacent areas ,

Journal of environmental radioactivity, vol. 69, No. 1-2, pp. 119-127 .

doi:10.1016/S0265-931X(03)00090-0 , hdl:10013/epic.18645

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Article

Kauker, F. , Gerdes, R. , Karcher, M. , Köberle, C. and Lieser, J. L. (2003)
Variability of Arctic and North Atlantic sea ice: A combined analysis of model results and observations from 1978 to 2001 ,

Journal of Geophysical ResearchC6), 108 .

doi:10.1029/2002JC001573 , hdl:10013/epic.16221

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Article

Rinke, A. , Gerdes, R. , Dethloff, K. , Kandlbinder, T. , Karcher, M. , Kauker, F. , Frickenhaus, S. , Köberle, C. and Hiller, W. (2003)
A case study of the anomalous Arctic sea ice conditions during 1990: Insights from coupled and uncoupled regional climate model simulations ,

Journal of geophysical research, Vol. 108, No. D9 .

doi:10.1029/2002JD003146 , hdl:10013/epic.16382

Article

Karcher, M. , Gerdes, R. , Kauker, F. and Köberle, C. (2002)
Modelling decadal variability of Arctic sea ice ,

Newsletter from the AOSB - Arctic Ocean Sciences Board, July 2002ff., 11 .

hdl:10013/epic.16153

Article

Karcher, M. and Oberhuber, J. M. O. (2002)
Pathways and modification of the upper and intermediate waters of the Arctic Ocean, ,

Journal of Geophysical ResearchC6), 107 .

doi:10.1029/2000JC000530 , hdl:10013/epic.15376

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Article

Steele, M. , Ermold, W. , Holloway, G. , Haekkinen, S. , Holland, D. , Karcher, M. , Kauker, F. and Maslowski, W. (2001)
Adrift in the Beaufort Gyre: A Model Intercomparison ,

Geophysical Research Letters, Vol. 28, No. 15, pp. 2935-2838 .

hdl:10013/epic.14594

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Article

Brümmer, B. , Müller, G. , Affeld, B. , Gerdes, R. , Karcher, M. and Kauker, F. (2001)
Cyclones over Fram Strait:Impact on sea ice and variability ,

Polar Research, 20 (2), pp. 147-152 .

hdl:10013/epic.14593

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Article

Proshutinsky, A. , Steele, M. , Zhang, J. , Holloway, G. , Steiner, N. , Hakkinen, S. , Holland, D. , Gerdes, R. , Köberle, C. , Karcher, M. , Johnson, M. , Maslowski, W. , Walczowski, W. , Hibler, W. and Wang, J. (2001)
Multinational effort studies differences among Arctic Ocean models ,

EOS, Transactions, American Geophysical Union, 82(51), 637 , pp. 643-644 .

hdl:10013/epic.15430

Article

Gerdes, R. , Karcher, M. , Kauker, F. and Köberle, C. (2001)
Predicting the spread of radioactive substances from Kursk ,

EOS, Transactions, American Geophysical Union, 82(23), 253 , pp. 256-257 .

hdl:10013/epic.14532

Article

Dethleff, D. , Nies, H. , Harms , I. H. and Karcher, M. (2000)
Dispersal of particle-bond and dissolved radionuclides through flaw lead produced sea-ice and dense water in the western Kara Sea ,

Journal of Marine Systems , Vol. 24, pp. 233-248 .

hdl:10013/epic.14270

Article

Karcher, M. and Harms, I. (2000)
Estimation of water and ice fluxes in the Arctic for an improved box structure of the NRPA box model (Transport Programme) ,

Report to the Norwegian Radiation Protection Agency (NRPA) .

hdl:10013/epic.15074

Article

Harms, I. H. , Karcher, M. and Dethleff, D. (2000)
Modelling Siberian river runoff -implications for contaminant transport in the Arctic Ocean- ,

Journal of Marine Systems, Vol. 27, 95-115 .

hdl:10013/epic.14274

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Article

Dethleff, D. , Nies, H. , Harms, I. H. and Karcher, M. (2000)
Transport of radionuclides by sea-ice and dense-water formed in western Kara Sea flaw leads ,

Journal of Marine Systems , Vol. 24, Nos. 3-4, pp. 233-248 .

hdl:10013/epic.14578

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Article

Nies, H. , Harms, I. H. , Karcher, M. , Dethleff, D. and Bahe, C. (1999)
Anthropogenic Radioactivity in the Arctic Ocean - Review of the results from the Joint German project ,

Science of the Total Environment, 237 (238), pp. 181-191 .

hdl:10013/epic.14579

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Article

Harms, I. H. and Karcher, M. (1999)
Modeling the seasonal variability of hydrography and circulation in the Kara Sea ,

Journal of Geophysical Research , Vol. 104, 13, 431 .

hdl:10013/epic.14268

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Article

Nies, H. , Harms, J. and Karcher, M. (1998)
Anthropogenic radioactivity in the Nordic Seas and the Arctic Ocean: Results from a joint project ,

Deutsche Hydrographische Zeitschrift, Vol. 50, pp. 313-343 .

hdl:10013/epic.14271

Article

Nies, H. , Harms, I. H. , Karcher, M. , Dethleff, D. , Bahe, C. , Kuhlman, G. , Kleine, E. and Loewe, P. (1998)
Anthropogenic radioactivity in the Nordic Seas and the Arctic Ocean: Results from a joint project ,

Deutsche Hydrographische Zeitschrift, Vol.50, No.4, pp. 313-343 .

hdl:10013/epic.14577

Article

Karcher, M. (1997)
Dynamic impact of oscillating sources on the North Atlantic deep circulation: a process study ,

Journal of Geophysical Research , Vol. 102, pp. 10339-10352 .

hdl:10013/epic.14273

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Article

Nies, H. , Bahe, C. , Dethleff, D. , Harms, I. H. and Karcher, M. (1997)
Transport and dispersion of artificial radioactivity in the Arctic Ocean-Model studies and observations- ,

Radioprotection - Colloques, Vol 32, C2, special issue: Radionuclides in the Oceans (RADOC 96-97) Part I: Inventories, Behaviour and Processes, pp. 407-416 .

hdl:10013/epic.14580

Article

Karcher, M. and Lippert, A. (1994)
Spin-up and breakdown of source-driven deep North Atlantic flow over realistic bottom topography ,

Journal of Geophysical Research , Vol. 99, pp. 12357-12373 .

hdl:10013/epic.14272

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Article

Karcher, M. and Muehlenweg, S. (1987)
Storm surge simulations in the Zalew Wislany (Vistula Lagoon) using a 2-dimensional numerical model ,

Rozprawy Hydrotechniczne, Polish Academy of Science, Z. 49, pp. 163-170 .

hdl:10013/epic.15075

Book

Nies, H. , Karcher, M. , Bahe, C. , Backhaus, J. , Harms, I. and Dethleff, D. (1999)
Transportmechanismen radioaktiver Substanzen im Arktischen Ozean-Numerische und experimentelle Studien am Beispiel der Barents- und Karasee ,

Berichte des Bundesamtes für Seeschiffahrt und Hydrographie Nr.21, Hamburg und Rostock, 134 p. .

hdl:10013/epic.15076

Inbook

Karcher, M. , Gerdes, R. and Kauker, F. (2008)
Long-term variability of Atlantic water inflow to the Northern Seas: insights from model experiments ,

Arctic-Subarctic Ocean Fluxes: Defining the role of the Northern Seas in Climate, Editors: B. Dickson, J. Meincke and P. Rhines, Springer, ISBN: 978-1-4020-6773-0 .

hdl:10013/epic.30223

Inbook

Gerdes, R. , Karcher, M. , Köberle, C. and Fieg, K. (2008)
Simulating the long term variability of liquid freshwater export from the Arctic Ocean ,

Arctic-Subarctic Ocean Fluxes: Defining the role of the Northern Seas in Climate, Editors: B. Dickson, J. Meincke and P. Rhines, Springer, ISBN: 978-1-4020-6773-0 .

hdl:10013/epic.30224

Inbook

Harms, I. H. and Karcher, M. (2003)
Pathways of anthropogenic radionuclides in the northern oceans ,

in: Modelling Radioactivity in the Environment, Elsevier, M. Scott (Ed.), Section 2 Chapter 10, ISBN: 0-08-043663-3 .

hdl:10013/epic.14648

Inbook

Harms, I. H. , Karcher, M. and Burchard, H. (2003)
The use of hydrodynamic circulation models for simulating oceanic dispersion of radioactivity ,

in: 'Modelling Radioactivity in the Environment', Elsevier, M.Scott (Ed.), Section 1, Chapter 3, ISBN: 0-08-043663-3 .

hdl:10013/epic.14936

Thesis

Thesis -PhD

Karcher, M. (1994)
Dynamische Auswirkungen veränderlicher Quellen auf die Tiefenzirkulation des Nordatlantiks ,

PhD thesis, Universitaet Hamburg.

hdl:10013/epic.15073

Conference

Conference -Poster

Rabe, B. , Karcher, M. , Schauer, U. , Toole, J. , Krishfield, R. , Pisarev, S. , Kauker, F. , Gerdes, R. and Kikuchi, T. (2011)
An assessment of Arctic Ocean freshwater content changes from the 1990s to the 2006-2008 period and beyond ,

WCRP Open Science Conference Climate Research in Service to Society -- Session C40: The Changing Cryosphere and Its Role in the Climate System, Denver, USA .

hdl:10013/epic.38618

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Conference -Talk

Karcher, M. , Smith, J. N. , Kauker, F. and Gerdes, R. (2011)
Dispersion of 129Iodine in the Arctic Ocean 1970-2008 - its use in uncovering the Arctic Ocean circulation variability - ,

Symposium on Isotopes in Hydrology, Marine Ecosystems, and Climate Change Studies , Oceanographic Museum of Monaco .

hdl:10013/epic.39115

Conference -Invited talk

Karcher, M. (2011)
Should we modify our understanding of surface and mid-depth circulation of the Arctic Ocean? ,

European Geosciences Union, General Assembly 2011, Vienna, Austria 08 April 2011. .

hdl:10013/epic.37334

Conference -Invited talk

Karcher, M. (2010)
On the connection of Atlantic inflow variability and the overflows via the Arctic Ocean loop ,

Seasonal to Multi-decadal Predictability of Polar Climate, A pan-WCRP workshop initiated by SPARC and CliC,October 25-29, 2010, Bjerknes Centre, Bergen, Norway. .

hdl:10013/epic.35938

Conference -Invited talk

Kauker, F. , Gerdes, R. and Karcher, M. (2010)
Seasonal Predictability of Sea Ice Minimum Extent - Lessons from the Sea Ice Outlook 2008/9 ,

Sea Ice Outlook Meeting, Miami, Fl, USAMarch 2010 (via telephone). .

hdl:10013/epic.34844

Conference -Talk

Rabe, B. , Karcher, M. , Schauer, U. , Krishfield, R. A. , Toole, J. M. , Pisarev, S. , Gerdes, R. , Kauker, F. and Kikuchi, T. (2010)
An assessment of pan-Arctic Ocean freshwater content changes from the 1990s to the IPY period ,

Eos Trans. AGU, 91(26), Ocean Sci. Meet. Suppl., Abstract PO51A-05. .

hdl:10013/epic.36743

Conference -Invited talk

Kauker, F. , Gerdes, R. and Karcher, M. (2009)
AWI/OASys contribution to the S4D sea-ice outlook 2008 ,

Worshop on "Barents Sea seasonal forecasting", organized by the Shtokman Developement AG, Norwegian Meteorological Institute, Oslo, NorwayApril 2009. .

hdl:10013/epic.32766

Conference -Invited talk

Kauker, F. , Kaminski, T. , Karcher, M. , Gerdes, R. , Giering, R. and Vossbeck, M. (2009)
Adjoint data assimilation technique and optimal network design ,

Arctic Observing Network (AON) Design and Implementation (ADI) Workshop, Boulder, Colorado, USA, December 2nd to 4th 2009. .

hdl:10013/epic.34056

Conference -Invited talk

Kauker, F. , Gerdes, R. and Karcher, M. (2009)
Alfred Wegener Institute / OASys's SIO Contribution 2008: Setup / Initialization of the Ensemble Approach, Analysis of the Results, Plans for 2009 ,

March 2009 Sea Ice Outlook Workshop, National Snow and Ice Data Center (NSIDC), Boulder, Colorado, March 10th to 11th .

hdl:10013/epic.34051

Conference -Invited talk

Karcher, M. , Kauker, F. , Hovelsrud, G. and West, J. (2009)
Linking modelling data with Societal Impacts: a Case study on fishery landings and SST ,

International Symposium 'The Arctic Climate System, its Present Status, Future Evolution and Potential Impacts', Brussels, November 10-12 .

hdl:10013/epic.34052

Conference -Invited talk

Karcher, M. , Gerdes, R. , Kauker, F. and Smith, J. N. (2009)
Modelling of marine tracers in the Arctic Ocean ,

AWI-IUP seminar on "Tracers in the Climate System", Bremerhaven. July 2009. .

hdl:10013/epic.34057

Conference -Invited talk

Kauker, F. , Gerdes, R. and Karcher, M. (2009)
Seasonal Predictability of Sea Ice Minimum Extent - Lessons from the Sea Ice Outlook 2008/9 ,

DAMOCLES symposium: The Arctic Climate system; its present status, future evolution and potential impacts, Brussels, Belgium, November 10th to 12th .

hdl:10013/epic.34053

Conference -Talk

Kauker, F. , Kaminski, T. , Karcher, M. , Giering, R. , Gerdes, R. and Vossbeck, M. (2008)
Adjoint analysis of the summer 2007 low in Arctic sea ice area ,

EGU General Assembly, Vienna, Austria, EGU2008-A-09303. .

hdl:10013/epic.31968

Conference -Talk

Karcher, M. , Beszczynska, A. , Gerdes, R. , Kauker, F. and Heyen, S. (2008)
Arctic Ocean warming and its overflow reduction potential ,

EGU General Assembly, Vienna, Austria, EGU2008-A-09919. .

hdl:10013/epic.31969

Conference -Invited talk

Gerdes, R. , Köberle, C. , Hacker, F. , Karcher, M. and Kauker, F. (2008)
Comparison of Arctic sea ice variability in IPCC climate experiments and in ocean-sea ice models ,

EGU General Assembly, EGU2008-A-02862; OS8-1FR4O-004;. .

hdl:10013/epic.30462

Conference -Invited talk

Karcher, M. , Gerdes, R. , Kauker, F. and Köberle, C. (2008)
NAOSIM NSEs (Northern Sea Exchanges) ,

Nordic Seas Exchange workshop, NERSC, Bergen, Norway. .

hdl:10013/epic.34058

Conference -Invited talk

Kauker, F. , Kaminski, T. , Karcher, M. , Giering, R. , Gerdes, R. and Vossbeck, M. (2008)
Variational assimilation and adjoint sensitivities of the North Atlantic/Arctic Ocean Sea Ice Model (NAOSIM) ,

DAMOCLES WP5 workshop, February 11th to 12th, Hotel Orkin, Reykjavik, Iceland. .

hdl:10013/epic.30073

Conference -Invited talk

Karcher, M. (2007)
Advection versus local transformation processes in the Arctic Ocean ,

Arctic Workshop of DAMOCLES WP5, OsloNovember 2007. .

hdl:10013/epic.28569

Conference -Invited talk

Karcher, M. , Kauker, F. and Gerdes, R. (2007)
The Arctic ocean in the 20th century - first results from an AOMIP experiment driven with 100 years of reconstructed forcing fields (keynote) ,

Joint AOMIP/(C)ARCMIP/SEARCH for DAMCOLES (S4D) workshop, October 29th to 31th, 2007. University Pierre et Marie Curie and the Muséum Nationale d'Histoire Naturelle, Paris, France. .

hdl:10013/epic.28521

Conference -Talk

Dorn, W. , Dethloff, K. , Gerdes, R. , Rinke, A. , Karcher, M. and Kauker, F. (2007)
Gekoppelte Simulationen des arktischen Klimasystems: Sensitive und unsichere Prozessbeschreibungen ,

DACH Meteorologen-Tagung, 10.-14. September 2007, Hamburg, Germany. .

hdl:10013/epic.27729

Conference -Talk

Dorn, W. , Dethloff, K. , Rinke, A. , Frickenhaus, S. , Gerdes, R. , Karcher, M. , Kauker, F. and Olbers, D. (2007)
Sensitivitätsstudien mit einem gekoppelten regionalen Klimamodell der Arktis zur Identifizierung der grundlegenden Prozesse für eine realistische Simulation des arktischen Meereises ,

Begutachtungsworkshop des BremHLR, 11. Dezember 2007, Bremen, Germany. .

hdl:10013/epic.28732

Conference -Talk

Dorn, W. , Dethloff, K. , Rinke, A. , Gerdes, R. , Karcher, M. , Kauker, F. and Frickenhaus, S. (2007)
Uncertain descriptions of Arctic climate processes in coupled models and their impact on the simulation of Arctic sea ice ,

SEARCH for DAMOCLES workshop, 29-31 October 2007, Paris, France. .

hdl:10013/epic.28730

Conference -Invited talk

Karcher, M. , Gerdes, R. and Kauker, F. (2006)
Atlantic Water in the Arctic Ocean: Circulation, Variability, Signal Propagation - Results from Modeling and Observations in the Context of AOMIP ,

Ocean Science Meeting, AGU, 20.-24. February 2006, Honululu, Hawaii, U.S.A. .

hdl:10013/epic.24072

Conference -Invited talk

Karcher, M. (2005)
Dispersion Modelling of radionuclides in the Arctic - from hindcasts to emergency preparedness ,

Invited Lecture, AMAP Expert Group meeting for Radioactivity, Swedish Radiation Protection Authority, 24-26 May, Stockholm, Sweden. .

hdl:10013/epic.23166

Conference -Talk

Dorn, W. , Dethloff, K. , Rinke, A. , Gerdes, R. , Karcher, M. , Kauker, F. and Frickenhaus, S. (2005)
Requirements for a coupled regional atmosphere-ocean-ice model to reproduce the Arctic sea-ice anomaly during summer 1998 realistically ,

EGU General Assembly, 24.-29. April 2005, Vienna, Austria. .

hdl:10013/epic.23059

Conference -Talk

Dorn, W. , Dethloff, K. , Rinke, A. , Frickenhaus, S. , Gerdes, R. , Karcher, M. and Kauker, F. (2005)
Sea-ice simulations with AWI's coupled regional A-O-I model HIRHAM-NAOSIM ,

Arctic Climate Workshop, 5-7 September 2005, Potsdam, Germany. .

hdl:10013/epic.24179

Conference -Conference paper

Iosjpe, M. , Karcher, M. , Harms, I. , Steenhuisen, F. , Gwynn, J. and Sickel, M. (2005)
Significance of transit and residence time parameters for improvement on radioecological assessment of marine environment ,

2nd Intern. Conference on Radioactivity in the Environment & 6th Intern. conference on environmental radioactivity in the Arctic and the Antarctic,Nice, France, 2-6 October 2005, Extended Abstract. .

hdl:10013/epic.23360

Preview

Conference -Conference paper

Gerland, S. , Karcher, M. , Dowdall, M. , Divine, D. , Iosjpe, M. , Pavlov, V. and Gwynn, J. P. (2005)
Spectral and geostatistical analysis of measured and modelled Technetium-99 timeseries data in the Nordic marine environment ,

2nd Intern. Conference on Radioactivity in the Environment & 6th Intern. conference on environmental radioactivity in the Arctic and the Antarctic,Nice, France, 2-6 October 2005, Extended Abstract. .

hdl:10013/epic.23380

Preview

Conference -Invited talk

Karcher, M. (2005)
Tc-99 Ausbreitung im europäischen Nordmeer und dem arktischen Ozean - Ergebnisse des RADNOR Projektes ,

Workshop am Bundesamt fuer Seeschifffahrt und Hydrographie im Rahmen des Projektes Kartierung von Tc-99, I-129 und I-127 im Oberflächewasser der Nordsee, Hamburg.11.2005. .

hdl:10013/epic.24239

Conference -Invited talk

Beszczynska-Möller, A. , Fahrbach, E. , Gerdes, R. , Karcher, M. , Kauker, F. , Orvik, K. A. , Schauer, U. and Skagseth, O. (2005)
Warm Anomalies and Heat Flux Variability in Fram Strait in 1997-2004: A Comparison between Observations and Model Results ,

European Geophysical Union, General Assembly, Vienna, AustriaApril 2005. .

hdl:10013/epic.23362

Conference -Conference paper

Karcher, M. and Harms, I. H. (2004)
Arctic Ocean Shelf-Basin Interaction ,

in: Gerland and Njastad (eds.), Arctic Climate Feedback Mechanisms - Proceedings of Arctic Climate Impact Assessment (ACIA) workshop, 17-19 November, Tromsø, Rapport of the Norwegian Polar Institutt No. 124, Tromsø, Norway .

hdl:10013/epic.20344

Conference -Conference paper

Gerland, S. , Perovich, D. K. , Haapala, J. , Harms, I. , Ivanov, B. V. , Pedersen, C. A. , Haas, C. , Hansen, E. , Karcher, M. , Magnusdottir, G. , McPhee, M. G. , Morison, J. , Winther, J. G. and Njastad, B. (2004)
Arctic sea ice, climate change and related climate feedback mechanisms ,

Proceedings of the ACIA International Scientific Symposium on Climate Change in the Arctic, Reykjavik, Iceland, 9-12 November 2004,. .

hdl:10013/epic.21783

Preview

Conference -Invited talk

Karcher, M. , Dickson, R. R. , Gerdes, R. , Kauker, F. and Köberle, C. (2004)
Feeding the overflows evolution and propagation of decadal anomalies from observations and modelling ,

European Geosciences Union - 1st General Assembly, 25.-30.April 2004, Nice, France. .

hdl:10013/epic.20661

Conference -Invited talk

Karcher, M. and Harms, I. (2003)
Arctic Ocean shelf - basin interaction ,

Arctic Climate Impact Assessment (ACIA) workshop on Arctic Climate Feedback Mechanisms, 17 -19 November 2003, Tromsø, Norway. .

hdl:10013/epic.19869

Conference -Talk

Schlitzer, R. , Harms, I. , Karcher, M. and Kulakov, M. (2003)
Circulation and Matter Transport from High Resolution Models ,

3rd SIRRO Workshop, 3.-5. June 2003, Moscow, Russia. .

hdl:10013/epic.19541

Conference -Talk

Hurka, J. , Gerdes, R. , Karcher, M. , Kauker, F. and Köberle, C. (2003)
Deep convection in the Greenland and Labrador seas: Analysis of model results ,

EGS-AGU-EUG Joint Assembly, Nice, 8.4.2003, EAE03-A-04121. .

hdl:10013/epic.30284

Conference -Conference paper

Gerdes, R. , Hurka, J. and Karcher, M. (2003)
Greenland and Labrador Sea convection in an ocean sea ice simulation 1948-2002 ,

Seventh Conference on Polar Meteorology and Oceanography and Joint Symposium on High-Latitude Climate Variations, extended abstract (CD-ROM) 12-16 May 2003, Hyannis, USA. .

hdl:10013/epic.18828

Conference -Talk

Wehde, H. , Backhaus, J. O. , Gerdes, R. , Karcher, M. and Kauker, M. (2003)
High resolution simulations of oceanic convection within the Greenland Sea ,

EGS-AGU-EUg Joint Assembly, Nice, 8.4.2003, EAE03-A-07312. .

hdl:10013/epic.30283

Conference -Poster

Ivchenko, V. , Gerdes, R. , Haas, C. , Karcher, M. , Kauker, F. and Köberle, C. (2003)
Ice transport through Fram Strait: analysis of backward trajectories ,

EGS-AGU-EUG Joint Assembly, Nice, 10.4.2003, EAE03-A-08865. .

hdl:10013/epic.30290

Conference -Invited talk

Gerdes, R. , Brauch, J. , Hurka, J. , Karcher, M. , Kauker, F. and Köberle, C. (2003)
Long term variability of Arctic-Atlantic exchanges ,

EGS-AGU-EUG Joint Assembly, Nice, 11.4.2003, EAE03-A-02966. .

hdl:10013/epic.30286

Conference -Conference paper

Schauer, U. , Rudels, B. , Karcher, M. , Fer, I. , Harms, I. , Pisarev, S. , Skogseth, R. , Björk, G. , Winsor, P. and Haugan, P. (2003)
Ocean convection in Arctic shelf polynyas ,

Proceedings of ACSYS Final Science Conference "Progress in Understanding the Arctic Climate System", 11-14 November 2003, AARI St. Petersburg, Russia. .

hdl:10013/epic.20254

Conference -Conference paper

Karcher, M. , Gerdes, R. , Kauker, F. , Köberle, C. and Schauer, U. (2003)
Transformation of Atlantic Water in the Barents Sea between 1948 and 2002 ,

Seventh Conference on Polar Meteorology and Oceanography and Joint Symposium on High-Latitude Climate Variations, Extended Abstract (CD-ROM) 12-16 May 2003, Hyannis, U.S.A. .

hdl:10013/epic.18826

Preview

Conference -Poster

Kauker, F. , Gerdes, R. , Karcher, M. , Köberle, C. and Lieser, J. (2003)
Variabilitz of Arctic and North Atlantic sea ice: A combined analysis of model results and observations from 1978 to 2001 ,

EGS-AGU-EUG Joint Assembly, Nice, 10.4.2003, EAE .

hdl:10013/epic.30289

Conference -Conference paper

Gerland, S. , Karcher, M. , Iosjpe, M. , Harms, I. and Kolstad, A. K. (2002)
Distribution of technetium-99 discharges in the North Atlantic and Arctic: measurements and model results ,

Proceedings from the 5th International conference on environmental radioactivity in the Arctic and Antarctic, 16 - 20 June 2002, St Petersburg, Russia .

hdl:10013/epic.16062

Conference -Invited talk

Karcher, M. (2002)
Interpretation of Arctic Sea Ice Large-Scale Variability ,

Arctic Ocean Science Board, 21. Meeting, Groningen. April. .

hdl:10013/epic.16944

Conference -Invited talk

Karcher, M. (2002)
Variability of the northern high latitude ice and ocean - recent activities in the AWI Arctic modelling group ,

German-Russian Modeling Seminar, 19.-22. November, Inst. for Marine Research, University of Hamburg. .

hdl:10013/epic.16951

Conference -Conference paper

Karcher, M. , Gerland, S. , Harms, I. H. , Iosjpe, M. , Heldal, H. E. and Kershaw, P. J. (2002)
The dispersion of technetium-99 in the Nordic Seas and the Arctic Ocean in the 1990s according to model results and observations ,

Proceedings of the 'International Conference on Radioactivity in the Environment' 1-5 Sept. 2002, Monaco .

hdl:10013/epic.16154

Preview

Conference -Invited talk

Karcher, M. , Gerdes, R. , Kauker, F. and Köberle, C. (2001)
Arctic Warming - evolution and spreading of the 1990s warm event in the Nordic Seas and the Arctic Ocean ,

EGS XXVI General Assembly, Nice, France.-30. March. .

hdl:10013/epic.16941

Conference -Invited talk

Karcher, M. (2001)
Modeling the Arctic Ocean ,

THE ARCTIC OCEAN - Progress in Arctic Ocean Research over the past decades, Royal Swedish Academy of Sciences, 5.-7. November, Stockholm. .

hdl:10013/epic.16934

Conference -Invited talk

Karcher, M. and Harms, I. (2001)
Recent modelling activities in high northern latitudes at the Alfred Wegener Institute for Polar and Marine Research (Bremerhaven) and the Institute for Marine Research (Hamburg) ,

Seminar at the Marine Environmental Lab., IAEA, Monaco. March. .

hdl:10013/epic.16954

Conference -Invited talk

Karcher, M. (2000)
Propagation of hydrographic anomalies in the Nordic Seas - high-resolution modeling in the EU project 'VEINS' ,

'Topics on Atmospheres and Oceans Seminar', School of Earth and Ocean Sciences, University of Victoria, Canada. July. .

hdl:10013/epic.16953

Conference -Conference paper

Karcher, M. , Harms, I. H. and Smith, J. N. (1999)
Long-range transport of 129 I and 137 Cs in the Nordic Seas and the Arctic Ocean ,

IAEA-TECDOC-1094, Viennaff. .

hdl:10013/epic.15098

Conference -Conference paper

Brauch, J. , Gerdes, R. , Karcher, M. , Kauker, F. and Köberle, C. (1999)
Response experiments with NAO related forcing ,

ICES Council Meeting,L/28 .

hdl:10013/epic.11032

Preview

Conference -Conference paper

Karcher, M. , Brauch, J. , Fritzsch, B. , Gerdes, R. , Kauker, F. , Köberle, C. and Prange, M. (1999)
Variability in the Nordic Seas exchange - model results 1979-1993 ,

ICES Council Meeting 1999,L/18 .

hdl:10013/epic.12168

Conference -Invited talk

Karcher, M. (1998)
Exploring Ice and Oceans of the high North - Research with computers and ships ,

Scientific Conference SEA YOUR FUTURE at the European Week for Science and Technological Culture 1998, ECSITE (European Collaborative for Science, Industry and Technology Exhibitions), 29.-31. August, Lisbon, Portugal. .

hdl:10013/epic.17141

Conference -Conference paper

Karcher, M. and Oberhuber, J. M. (1998)
Modeling the ventilation of the upper and intermediate water of the Arctic Ocean with an isopycnic model ,

WCRP Report 106, WMO/TD No. 908 .

hdl:10013/epic.15099

Conference -Conference paper

Karcher, M. , Harms, I. H. , Dethleff, D. and Nies, H. (1997)
Transit times and pathways of contaminants in the Arctic Ocean ,

AMAP Int.Symp.on Environmental Pollution of the Arctic and Third Int.Conf.on Environmental Radioactivity in the Arctic, Extended Abstracts, 46-50, Tromsoe, Norway. .

hdl:10013/epic.15100

Miscellaneous

Murray, M. , Eicken, H. , Starkweather, S. , Gerlach, S. , Evengard, B. , Gearhard, S. , Schlosser, P. , Karcher, M. , McLennan, D. , Epstein, H. , Bock, N. , Julliet, C. , Graben, S. , Grimwood, B. , Labonte, D. , Pletnikoff, K. , Scott, N. , Sommerkorn, M. , Vardy, M. , Vitale, V. , Wagner, I. and Wandel, J. (2012)
Responding to Arctic Environmental Change - Translating our Grwoing Understanding into a Research Agenda for Action ,

[Miscellaneous]

hdl:10013/epic.39936

Preview

This list was generated on Mon May 20 04:49:00 2013 CEST.