Nikolay Koldunov

Address

Alfred Wegener Institute
Bussestraße 24
27570 Bremerhaven 
(Room F-212)

Contact

Tel: +49(471)4831-1893

Fax: +49(471)4831-1797

Email address: koldunovn@gmail.com, nikolay.koldunov@awi.de

Links

Google Scholar

ResearchGate

GitHub

Research interests

• Arctic sea ice numerical modelling and remote sensing.
• Arctic Ocean medium and high resolution numerical modelling and data assimilation.
• Atmosphere-ice-ocean interactions and feedbacks. Interactions between the North Atlantic and the Arctic Oceans.
• Atlantic water circulation.
• Coastall and open ocean sea level variability and trends in the Arctic Ocean.
• Fresh water dynamics and variability.

Education and Professional Experience

• since 2016 Post-Doc at MARUM and AWI

• 2014-2016 Post-Doc at the Climate Service Center Germany (GERICS), Hamburg, Germany.

• 2010-2014 Post-Doc at the Institute of Oceanography, Universität Hamburg, advisor: Prof. Dr. Detlef Stammer

• 2010 Dr. rer. nat., Universität Hamburg, Germany.

• 2006-2010 PhD student at the graduate school "International Max Planck Research School on Earth System Modelling (IMPRS-ESM), Hamburg, advisors: Prof. Dr. Detlef Stammer and Prof Dr. Jochem Marotzke.

• 2004-2006 Research assistant, Arctic and Antarctic Research institute (AARI), Russia.

• 2002-2004 M.Sc., Applied Polar and Marine Science, Universität Bremen, Germany.

• 2002-2004 M.Sc., Hydrometeorology, State University of St. Petersburg, Russia.

• 1998-2002 B.Sc., Oceanography, State University of St. Petersburg, Russia.

Publications in Refereed Journals

Preprints:

• Chassignet, E. P., Yeager, S. G., Fox-Kemper, B., Bozec, A., Castruccio, F., Danabasoglu, G., Kim, W. M., Koldunov, N., Li, Y., Lin, P., Liu, H., Sein, D., Sidorenko, D., Wang, Q., and Xu, X.: Impact of horizontal resolution on global ocean-sea-ice model simulations based on the experimental protocols of the Ocean Model Intercomparison Project phase 2 (OMIP-2), Geosci. Model Dev. Discuss., doi.org/10.5194/gmd-2019-374, in review, 2020.

• Tsujino, H. et al., Evaluation of global ocean–sea-ice model simulations based on the experimental protocols of the Ocean Model Intercomparison Project phase 2 (OMIP-2), Geosci. Model Dev. Discuss., doi.org/10.5194/gmd-2019-363, in review, 2020.

• Sidorenko, D., Danilov, S., Koldunov, N., Scholz, P., and Wang, Q.: Simple algorithms to compute meridional overturning and barotropic streamfunction on unstructured meshes, Geosci. Model Dev. Discuss., doi.org/10.5194/gmd-2019-336, in review, 2020.

• Tido Semmler, S. Danilov, Paul Gierz, Helge Goessling, Jan Hegewald, Claudia Hinrichs, Nikolay V. Koldunov, Narges Khosravi, Longjiang Mu, Thomas Rackow, Dimitry Sein, Dimitry Sidorenko, Qiang Wang, Thomas Jung, Simulations for CMIP6 with the new climate model AWI-CM: characteristics of the control, historical and scenario simulations. Submitted to JAMES.

• Eyring, V., et al., ESMValTool v2.0 – Extended set of large-scale diagnostics for quasi-operational and comprehensive evaluation of Earth system models in CMIP, Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmd-2019-291, in review, 2019.

Published:

2020

• [40] Hirschi, J. J.‐M., Barnier, B., Böning, C., Biastoch, A., Blaker, A. T., Coward, A., et al ( 2020). The Atlantic meridional overturning circulation in high resolution models. Journal of Geophysical Research: Oceans, 125, e2019JC015522. https://doi.org/10.1029/2019JC015522

• [39] Wang, Q., Wekerle, C., Wang, X., Danilov, S., Koldunov, N., Sein, D., et al ( 2020). Intensification of the Atlantic Water supply to the Arctic Ocean through Fram Strait induced by Arctic sea ice decline. Geophysical Research Letters, 47, e2019GL086682. https://doi.org/10.1029/2019GL086682

• [38] Righi, M., Andela, B., Eyring, V., Lauer, A., Predoi, V., Schlund, M., Vegas-Regidor, J., Bock, L., Brötz, B., de Mora, L., Diblen, F., Dreyer, L., Drost, N., Earnshaw, P., Hassler, B., Koldunov, N., Little, B., Loosveldt Tomas, S., and Zimmermann, K.: ESMValTool v2.0 – Technical overview, Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmd-2019-226, 2020.

• [37] Juricke, S., Danilov, S., Koldunov, N. V., Oliver, M., & Sidorenko, D. ( 2020). Ocean kinetic energy backscatter parametrization on unstructured grids: Impact on global eddy‐permitting simulations. Journal of Advances in Modeling Earth Systems, 12, e2019MS001855. https://doi.org/10.1029/2019MS001855

2019

• [36] Koldunov, N. V., Aizinger, V., Rakowsky, N., Scholz, P., Sidorenko, D., Danilov, S., and Jung, T.: Scalability and some optimization of the Finite-volumE Sea ice–Ocean Model, Version 2.0 (FESOM2), Geosci. Model Dev., 12, 3991–4012, https://doi.org/10.5194/gmd-12-3991-2019, 2019.

• [35] Koldunov, N. V., Danilov, S., Sidorenko, D., Hutter, N., Losch, M., Goessling, H., Rakowsky, N., Scholz, P., Sein, D., Wang, Q., Jung, T., Fast EVP solutions in a high‐resolution sea ice model, J. Adv. Model. Earth Syst., 11, 2019, https://doi.org/10.1029/2018MS001485

• [34] Sidorenko, D., Goessling, H. F., Koldunov, N. V., Scholz, P., Danilov, S., Barbi, D., et al ( 2019). Evaluation of FESOM2.0 coupled to ECHAM6.3: Pre‐industrial and HighResMIP simulations. Journal of Advances in Modeling Earth Systems, 11. https://doi.org/10.1029/2019MS001696

• [33] Scholz, P., Sidorenko, D., Gurses, O., Danilov, S., Koldunov, N., Wang, Q., Sein, D., Smolentseva, M., Rakowsky, N., and Jung, T.: Assessment of the Finite VolumE Sea Ice Ocean Model (FESOM2.0), Part I: Description of selected key model elements and comparison to its predecessor version, Geosci. Model Dev., https://doi.org/10.5194/gmd-2018-329, 2019.

• [32] Rackow, T., Sein, D. V., Semmler, T., Danilov, S., Koldunov, N. V., Sidorenko, D., Wang, Q., and Jung, T.: Sensitivity of deep ocean biases to horizontal resolution in prototype CMIP6 simulations with AWI-CM1.0, Geosci. Model Dev., 12, 2635-2656, https://doi.org/10.5194/gmd-12-2635-2019, 2019.

• [31] Wang, Q., C. Wekerle, S. Danilov, D. Sidorenko, N. Koldunov, D. Sein, B. Rabe, and T. Jung, 2019: Recent Sea Ice Decline Did Not Significantly Increase the Total Liquid Freshwater Content of the Arctic Ocean. J. Climate, 32, 15–32, https://doi.org/10.1175/JCLI-D-18-0237.1

• [30] Cabos, W., D. V. Sein, A. Durán-Quesada, G. Liguori, N. V. Koldunov, B. Martínez, F. Alvarez, K. Sieck, N. Limareva, J. G. Pinto (2018), Dynamical downscaling of historical climate over CORDEX Central America domain with a Regionally coupled atmosphere-ocean model., Climate Dynamics (2019) 52: 4305. https://doi.org/10.1007/s00382-018-4381-2

• [29] Wang, Q., Wang, X., Wekerle, C., Danilov, S., Jung, T., Koldunov, N., Lind, S., Sein, D., Shu, Q., Sidorenko D. (2019), Ocean heat transport into the Barents Sea: Distinct controls on the upward trend and interannual variability. Geophys. Res. Lett., 46. doi.org/10.1029/2019GL083837

• [28] Akperov, M et al., Future projections of cyclone activity in the Arctic for the 21st century from regional climate models (Arctic-CORDEX), accepted for Global and Planetary Change, https://doi.org/10.1016/j.gloplacha.2019.103005

2018

• [27] Koldunov, N. V. and Cristini, L.: Programming as a soft skill for project managers: How to have a computer take over some of your work, Adv. Geosci., 45, 295-303, https://doi.org/10.5194/adgeo-45-295-2018, 2018.

• [26] Xu, J., Koldunov, N.V., Remedio, A.R.C., Dein, D.V., Rechid, D., Zhi, X., Jiang, X., Xu M., Zhu, X., Fraedrich, K., Jacob D., Downstream effect of Hengduan Mountains on East China in the REMO regional climate model Theor Appl Climatol (2018). https://doi.org/10.1007/s00704-018-2721-0

• [25] D. Sidorenko, N. Koldunov, Q. Wang, S. Danilov, H. F. Goessling, O. Gurses, P. Scholz, D. V. Sein, E. Volodin, C. Wekerle, T. Jung. Influence of a salt plume parameterization in a coupled climate model. Journal of Advances in Modeling Earth Systems, 10. https://doi.org/10.1029/2018MS001291.

• [24] Sein, D. V., Koldunov, N. V., Danilov, S., Sidorenko, D., Wekerle, C., Cabos, W., Rackow T., Scholz P., Semmler T., Wang Q., Jung T. (2018). (2018). The relative influence of atmospheric and oceanic model resolution on the circulation of the North Atlantic Ocean in a coupled climate model. Journal of Advances in Modeling Earth Systems, 10. https://doi.org/10.1029/2018MS001327.

• [23] Xu, Jingwei, Nikolay Koldunov, Armelle Reca C. Remedio, Dmitry V. Sein, Xiefei Zhi, Xi Jiang, Min Xu, Xiuhua Zhu, Klaus Fraedrich, and Daniela Jacob. On the Role of Horizontal Resolution over the Tibetan Plateau in the REMO Regional Climate Model. Climate Dynamics, February 8, 2018, 1–18. https://doi.org/10.1007/s00382-018-4085-7.

• [22] Wang Q., C. Wekerle, S. Danilov, N.V. Koldunov, D. Sidorenko, D.V. Sein, B. Rabe, and T. Jung. (2018), Arctic Sea Ice Decline Significantly Contributed to the Unprecedented Liquid Freshwater Accumulation in the Beaufort Gyre of the Arctic Ocean, Geophys. Res. Lett., 45. https://doi.org/10.1029/2018GL077901.

• [21] Ivanov, V., Smirnov, A., Alexeev, V., Koldunov, N. V., Repina, I., & Semenov, V. (2018). Contribution of convection‐induced heat flux to winter ice decay in the Western Nansen Basin. Journal of Geophysical Research: Oceans, 123, 6581–6597. https://doi.org/10.1029/2018JC013995

• [20] Mirseid Akperov, Annette Rinke, Igor I. Mokhov, Heidrun Matthes, Vladimir A. Semenov, Muralidhar Adakudlu, John Cassano, Jens H. Christensen, Mariya A. Dembitskaya, Klaus Dethloff, Xavier Fettweis, Justin Glisan, Oliver Gutjahr, Günther Heinemann, Torben Koenigk, Nikolay V. Koldunov, René Laprise, Ruth Mottram, Oumarou Nikiéma, John F. Scinocca, Dmitry Sein, Stefan Sobolowski, Katja Winger, Wenxin Zhang (2018). Cyclone activity in the Arctic from an ensemble of regional climate models (Arctic CORDEX). Journal of Geophysical Research: Atmospheres, 123. https://doi.org/10.1002/2017JD027703

2017

• [19] Koldunov, N. V., Köhl, A., Serra, N., and Stammer, D.: Sea ice assimilation into a coupled ocean–sea ice model using its adjoint, The Cryosphere, 11, 2265-2281, https://doi.org/10.5194/tc-11-2265-2017, 2017.

• [18] Sein, D. V., Koldunov, N. V., Danilov, S., Wang, Q., Sidorenko, D., Fast, I., Rackow, T., Cabos, W. and Jung, T., Ocean Modeling on A Mesh with Resolution Following the Local Rossby Radius. Journal of Advances in Modeling Earth Systems, 9, 2601–2614. doi:10.1002/2017MS001099 , 2017

2016

• [17] Ivanov, V., Alexeev, V., Koldunov, N. V., Repina, I., Sandø, A. B., Smedsrud, L. H., & Smirnov, A. Arctic Ocean heat impact on regional ice decay - a suggested positive feedback. Journal of Physical Oceanography, doi:10.1175/JPO-D-15-0144.1 , 2015

• [16] Cabos, W., Sein, D. V, Pinto, J. G., Fink, A. H., Koldunov, N. V, Alvarez, F., Izquierdo, A., Keenlyside, N., Jacob, D. The South Atlantic Anticyclone as a key player for the representation of the tropical Atlantic climate in coupled climate models. Climate Dynamics, 1–19. http://doi.org/10.1007/s00382-016-3319-9 , 2016

2015

• [15] Nikolay V. Koldunov, P. Kumar, R. Rasmussen, AL. Ramanathan, A. Nesje, M. Engelhardt, M. Tiwari, A. Haensler, and D. Jacob. Identifying climate change information needs for the Himalaya region - Results from the GLACINDIA Stakeholder Workshop and Training Program, Bulletin of the American Meteorological Society, doi:10.1175/BAMS-D-15-00160.1 , 2015

• [14] Bashmachnikov, I., Nascimento, Â., Neves, F., Menezes, T., and Koldunov, N. V.: Distribution of intermediate water masses in the subtropical northeast Atlantic, Ocean Science, 11, 803-827, doi:10.5194/os-11-803-2015, 2015.

• [13] Dmitrenko, I. A., S. A. Kirillov, S. Rysgaard, D. G. Barber, D. G. Babb, L. Toudal Pedersen, N. V. Koldunov, W. Boone, O. Crabeck and J. Mortensen, Polynya impacts on water properties in a Northeast Greenland Fiord, Estuarine, Coastal and Shelf Science, Volume 153, Pages 10-17, ISSN 0272-7714, doi: 10.1016/j.ecss.2014.11.027, 2015.

2014

• [12] Nikolay V. Koldunov, Nuno Serra, Armin Köhl, Detlef Stammer, Olivier Henry, Pierre Prandi, Anny Cazenave, Per Knudsen, Ole Baltazar Andersen, Yongqi Gao, Johnny Johannessen. Multimodel simulations of Arctic Ocean sea surface height variability in the period 1970–2009, J. Geophys. Res. Oceans, 119, doi:10.1002/2014JC010170 , 2014.

• [11] Dmitry Sein, Nikolay Koldunov, Joaquim G. Pinto, William Cabos. Sensitivity of simulated regional Arctic climate to the choice of coupled model domain. Tellus A, 66, 23966, doi:10.3402/tellusa.v66.23966 , 2014.

• [10] Igor A. Dmitrenko, Sergey A. Kirillov, Nuno Serra, Nikolay V. Koldunov, Vladimir V. Ivanov, Ursula Schauer, Igor V. Polyakov, David Barber, Markus Janout, Vidar S. Lien, Mikhail Makhotin, Yevgeny Aksenov. Heat loss from the Atlantic water layer in the St. Anna Trough (northern Kara Seas): Causes and consequences. Ocean Sci., 11, 543-573, doi:10.5194/osd-11-543-2014, 2014.

• [9] J.A. Johannessen, R. P. Raj, J. E. O. Nilsen, T. Pripp, P. Knudsen, F. Counillon,D. Stammer, L. Bertino, O.B. Andersen, N. Serra , N. Koldunov. Toward improved estimation of the dynamic topography and ocean circulation in the high latitude and Arctic Ocean. Surveys in Geophysics, doi 10.1007/s00382-013-1816-7 , 2014.

2013

• [8] Nikolay V. Koldunov, A. Köhl, D. Stammer. Properties of Adjoint Sea Ice Sensitivities to Atmospheric Forcing and Implications for the Causes of the Long Term Trend of Arctic Sea Ice. Climate Dynamics 41 (2), 227-241, doi 10.1007/s00382-013-1816-7, 2013.

• [7] Ivanov V. V., V. Alexeev, T. Alexeeva, N. V. Koldunov, I. Repina, A. Smirnov.Does Arctic Ocean Ice Cover Become Seasonal?, Issledovanie Zemli iz Kosmosa, 4, 50-65. In Russian. 2013.

2012

• [6] O. Henry, P. Prandi, W. Llovel, A. Cazenave, S. Jevrejeva, D. Stammer , B. Meyssignac, N. Koldunov. Tide gauge-based sea level variations since 1950 along the Norwegian and Russian coasts of the Arctic Ocean: Contribution of the steric and mass components. Journal of Geophysical Research, 117, C06023, http://dx.doi.org/10.1029/2011JC007706, 2012.

• [5] Vladimir Ivanov, Irina Repina, Vladimir Alexeev, Nikolay V. Koldunov, Alexander Smirnov. Tracing Atlantic Water signature in the Arctic sea ice cover. Advances in Meteorology, vol 2012, doi:10.1155/2012/201818, 2012.

• [4] I.A. Dmitrenko, S.A. Kirillov, V.V. Ivanov, B. Rudels, N. Serra, and N. V. Koldunov. Atlantic modified halocline water over the Laptev Sea continental margin: Historical data analysis. Journal of Climate, 25, 5556-5565, doi: http://dx.doi.org/10.1175/JCLID-11-00336.1, 2012.

2010

• [3] Nikolay V. Koldunov, Detlef Stammer, and Jochem Marotzke. Present-day Arctic sea ice variability in the coupled ECHAM5/MPI-OM model. Journal of Climate, 23 (10), 2010.

2009

• [2] Igor A. Dmitrenko, Sergey A. Kirillov, Vladimir V. Ivanov, Rebecca A. Woodgate, Igor V. Polyakov, Nikolay Koldunov, Louis Fortier, Catherine Lalande, Lars Kaleschke, Dorothea Bauch, Jens A. Hölemann, and Leonid A. Timokhov. Seasonal modification of the Arctic Ocean intermediate water layer off the eastern Laptev Sea continental shelf break. Journal of Geophysical Research, 114(C6), June 2009.

• [1] Igor A. Dmitrenko, Dorothea Bauch, Sergey A. Kirillov, Nikolay Koldunov, Peter J. Minnett, Vladimir V. Ivanov, Jens A. Hölemann, and Leonid A. Timokhov. Barents Sea upstream events impact the properties of Atlantic Water inflow into the Arctic Ocean: Evidence from 2005 to 2006 downstream observations. Deep Sea Research Part I: Oceanographic Research Papers, 56(4):513–527, April 2009.

Teaching and Service

• Co-organiser "GLACINDIA: Stakeholder WORKSHOP ON IDENTIFYING CLIMATE CHANGE INFORMATION NEEDS and Training on Climate modeling and Climate Change Research, innovation and Services", 8-10th April 2015, Jawaharlal Nehru University (JNU), New Delhi, India. Block course "Introduction to Python for Geosciences" for participants.

• Semester course at HafenCity University: "Data analysis in oceanography". Winter semester 2014-2015.

• Organisation of bi-weekly KlimaCampus Python meetings. 2014.

• Python for Geosciences. Institute of Oceanography, University of Hamburg. Block course for co-workers: 24.10.2013.

• Climate models data: present and future climate change simulations. Summer School on Climate and Environmental Change, Russian State Hydrometeorological University, 11-17 July 2011.

• Introduction to Programming for Geoscientists, State University of St. Petersburg, POMOR master program. Block course: 03.05.2010-07.05.2010.

• Oceanographic measurements, Field course for university students (Department of Oceanography, State University of St. Petersburg), White Sea (Kandalakshsky bay). Summer 2003, 2004, 2005.

• Hydrology, Field course for school students, Environmental expedition ”Jhyvaya voda” (”Live water”) at Vepsky forest, Summer 1999,2001.

Outreach

Websites:

• Oceanographers.RU - Oceanography news and education. In Russian. Co-Author, Webmaster.

• koldunov.net - software tools and programing languages that used in geosciences for data analysis and visualization. In Russian. Author, Webmaster.

• Climaty.ru - latest developments in climate science, communicating climate science to general public. In Russian. Author, Webmaster.

• Critical Mass - Aggregator of Russian scientific blogs. In Russian. Editor.

• EarthPy - Python tools for geoscientists. In English. Author, Webmaster.

Interviews and popular science articles:

• Education and a bit of love of fame. Interview, Science and technology of Russia. In Russian, 18.03.2011.

• Don’t confuse weather and climate. Interview, Linnaleht. In Russian, 25.11.2010.

• Ocean as layer-cake. News item, Troickij variant Science, In Russian, 14.09.2010.

• Living in an ivory tower. Commentary Troickij variant Science, In Russian, 27.03.2012.

• Heater for Europe. Article about Gulf Stream. Motorboat and Yachting, Russian edition, In Russian, May-June 2012.

• Rubber travelers. Article about ”Rubber duck spill“. Motorboat and Yachting, Russian edition, In Russian, July-August 2012.

• Ice mountains. Article about icebergs in Northern and Southern hemispheres. Motorboat and Yachting, Russian edition, In Russian, September-October 2012.

• Agulhas Current. Short article about Agulhas Current. Motorboat and Yachting, Russian edition, In Russian, November-December 2012.

• El-Nino. Article about El-Nino. Motorboat and Yachting, Russian edition, In Russian, November-December 2012. January-February 2013.