DGFI-TUM - Gerzen, Tatjana

Tatjana Gerzen, Dr. rer. nat.

Deutsches Geodätisches Forschungsinstitut und
Lehrstuhl für Geodätische Geodynamik (Prof. Seitz)

Postadresse
Arcisstr. 21
80333 München

Tel.: +49 (89) 289-23734
tatjana.gerzen@tum.de

Research Area

Ionosphere and plasmasphere modelling, data assimilation

Academic Career

09/2015 - today, DFG grant for the Project MuSE (Multi-Satellite ionosphere-plasmasphere Electron density reconstruction) within the SPP 1788 - DynamicEarth
10/2018 - today, Research associate at the German Geodetic Research Institute, Technical University of Munich
09/2009 - 08/2018, Research associate at the German Aerospace Center, Institute for Communication and Navigation, Department Navigation
02/2004 - 08/2009, Research assistant at the Lehrstuhl II fuer Mathematik at RWTH Aachen University
03/2004 - 03/2006, Research assistant at the Lehrstuhl I fuer Mathematik at RWTH Aachen University
10/1999-02/2003, Student assistant at Mathematical Institute, University of Cologne
10/2002-09/2003, Student assistant at Institute for Informatics, University of Cologne
2008, PhD at RWTH Aachen University. "Edge search in graphs using incidence tests"
2003, Diploma in Mathematics, University of Cologne

Functions/Memberships

Global Geodetic Observing System (GGOS)

Focus Area Geodetic Space Weather Research, Joint Study Group 1 "Understanding Ionospheric and Plasmaspheric Processes", Member (since 2023)

Publications

2024

Gerzen T., Minkwitz D., Schmidt M., Rudenko S.: Validation of the NeQuick model, Ensemble Kalman filter and SMART+ based estimations of the topside ionosphere and plasmasphere. Advances in Space Research, 10.1016/j.asr.2024.08.017, 2024 (Open Access)

2020

Gerzen T., Minkwitz D., Schmidt M., Erdogan E.: Analysis of different propagation models for the estimation of the topside ionosphere and plasmasphere with an ensemble Kalman filter. Annales Geophysicae, 38(6), 1171-1189, 10.5194/angeo-38-1171-2020, 2020

(Open Access)

2017

Gerzen T., V. Wilken, D. Minkwitz, M. Hoque, S. Schlüter: Three-dimensional data assimilation for ionospheric reference scenarios. Ann. Geophys., 10.5194/angeo-35-203-2017, 2017

2016

Gerzen T. and D. Minkwitz: Simultaneous multiplicative column normalized method (SMART) for the 3D ionosphere tomography in comparison with other algebraic methods. Ann. Geophys., 97-115, 10.5194/angeo-34-97-2016, 2016

Gerzen T., J. Feltens, N. Jakowski, I. Galkin, B.W. Reinisch, R. Zandbergen: Analysis of the IMAGE RPI electron density data and CHAMP plasmasphere electron density reconstructions with focus on plasmasphere modelling. Adv. Space Res., 58(6), 856-866, 10.1016/j.asr.2016.05.031, 2016

Hoque M.M, D. Wenzel, N. Jakowski, Gerzen T., J. Berdermann, V. Wilken, M. Kriegel, H. Sato, C. Borries, D. Minkwitz: Ionospheric Response over Europe during the Solar Eclipse of 20 March 2015. Space Weather Space Clim., 6(A36), 10.1051/swsc/2016032, 2016

Minkwitz D., van den Boogaart K. G., Gerzen T., Hoque M.M., Hernández-Pajares M.: Ionospheric tomography by gradient enhanced kriging with STEC measurements and ionosonde characteristics. Ann. Geophys., 34, 999-1010, 10.5194/angeo-34-999-2016, 2016

2015

Gerzen T., D. Minkwitz, S. Schlüter: Comparing different assimilation techniques for the ionospheric F2 layer reconstruction. J. Geophys. Research, doi:10.1002/2015JA021067, 2015

Liang W., Limberger M., Schmidt M., Dettmering D., Hugentobler U., Bilitza D., Jakowski N., Hoque M.M., Wilken V., Gerzen T.: Regional modeling of ionospheric peak parameters using GNSS data - an update for IRI. Advances in Space Research 55(8): 1981-1993, 10.1016/j.asr.2014.12.006, 2015

Minkwitz D., van den Boogaart K. G., Gerzen T., and Hoque M.: Tomography of the ionospheric electron density with geostatistical inversion. Ann. Geophys., 33, 1071-1079, doi:10.5194/angeo-33-1071-2015, 2015

2014

Gerzen T., J. Feltens, N. Jakowski, I. Galkin, R. Denton, B. Reinisch, R. Zandbergen: Validation of plasmasphere electron density reconstructions derived from data on board CHAMP by IMAGE/RPI data. Adv. Space Res. , 55(1), 170–183, doi:10.1016/j.asr.2014.08.005, 2014

Minkwitz, D., Gerzen T., Wilken V. and Jakowski N.: Application of SWACI products as ionospheric correction for single-point positioning: A comparative study. Journal of Geodesy, 88(5), 463-478, doi:10.1007/s00190-014-0698-8, 2014

2013

Gerzen T., N. Jakowski, V. Wilken, and M. M. Hoque: Reconstruction of F2 layer peak electron density based on operational vertical Total Electron Content maps. Ann. Geophys., 31, 1241–1249, 10.5194/angeo-31-1241-2013, 2013

Gerzen T.: An NP-Completeness Result of Edge Search in Graphs. Graphs and Combinatorics, 10.1007/s00373-013-1287-y, 2013

2012

Park, J., H. Lühr, N. Jakowski, Gerzen T., H. Kil, G. Jee, C. Xiong, K.W. Min, M. Noja: A long-lived band of plasma density enhancement at mid-latitudes during the 2003 Halloween magnetic storm. J. Atmos. Sol.-Terr. Phys., 80, 100-110, http://dx.doi.org/10.1016/j.jastp.2012.03.009, 2012

2011

Gerzen T.: On a group testing problem: Characterization of graphs with 2-complexity c2 and maximum number of edges. Discrete Applied Math., 159(17), 2058-2068, 2011

2009

Gerzen T. : Edge search in graphs with restricted test sets. Discrete Math., 309(20), 5932-5942, 2009

Gerzen T. : Searching for an edge in a graph with restricted test sets. Discrete Math., 309(6), 1334-1346, 2009

2007

Gerzen T. and B. Randerath: Factoring logic functions using star-colorings. Australas. J. Combin., 39, 115-127, 2007

Posters/Presentations

2023

Gerzen T., Schmidt M., Minkwitz D. : Estimation of the topside ionosphere and plasmasphere by Ensemble Kalman Filter. 28th IUGG General Assembly, Berlin, Germany, 2023

2019

Gerzen T., B. Heilig, H. Lühr, M. Schmidt: Multi-Satellite ionosphere-plasmasphere Electron density reconstruction (MuSE) - project overview and first results. EGU 2019 - European Geosciences Union , Copernicus Meetings, Wien, Osterreich, 2019

Gerzen T., Heilig B., Luer H., Schmidt M., Minkwitz D. : Overview about the project MuSE: Multi-Satellite ionosphere-plasmasphere Electron density reconstruction. 27th International Union of Geodesy and Geophysics (IUGG), 2019

Gerzen T., Heilig B., Lühr H., Schmidt M., Rashkovetsky D.: Multi-Satellite ionosphere-plasmasphere Electron density reconstruction (MuSE). 4. SPP Kolloquium, SPP 1788 DynamicEarth, Bad Aibling, Germany, 2019

Gerzen T., Schmidt M., Minkwitz D., Rashkovetsky D.: Assimilation of space-based STEC into the NeQuick topside in the frame of the MuSE project. International Workshop on GNSS Ionosphere 2019, DLR, Neustrelitz, 2019

Schmidt M., Gerzen T.: Forschungsthema Atmosphäre - Weltraumwetter. Weltraumwetter Workshop, Bonn, Germany, 2019

Schmidt M., Gerzen T.: Research Topic Atmosphere – Space Weather. Fachkonferenz GFZ, Potsdam, 2019

2013

Liang W., Schmidt M., Dettmering D., Hugentobler U., Limberger M., Jakowski N., Hoque M., Wilken V., Gerzen T.: Combination of GNSS observations and electron density profiles from Radio Occultation data for the determination of a multi-scale regional ionosphere model. IAG Scientific Assembly, Potsdam, Germany, 2013

Liang W., Schmidt M., Dettmering D., Hugentobler U., Limberger M., Jakowski N., Hoque M., Wilken V., Gerzen T.: Regional ionosphere modelling from slant total electron content and electron density profile. International Beacon Satellite Symposium 2013, Bath, United Kingdom, 2013

Limberger M., Hugentobler U., Schmidt M., Dettmering D., Liang W., Jakowski N., Hoque M., Gerzen T., Berderman J.: The combination of space-geodetic observation techniques to determine key parameters of the F2 Chapman layer (AP-RASC13 Young Scientist Award). Asia-Pacific Radio Science conference 2013, Taipei, Taiwan, 2013

Limberger M., Hugentobler U., Schmidt M., Dettmering D., Liang W., Jakowski N., Hoque M., Gerzen T., Berdermann J.: Ionosphere modeling by means of electron density profiles based on the satellite missions COSMIC, CHAMP and GRACE;. EGU General Assembly 2013, Vienna, Austria, 2013

2012

Schmidt M., Hugentobler U., Jakowski N., Dettmering D., Liang W., Limberger M., Wilken V., Gerzen T., Hoque M., Berdermann J.: Multi-scale model of the ionosphere from the combination of modern space-geodetic satellite techniques - project status and first results. EGU General Assembly 2012, Vienna, Austria, 2012

Deutsches Geodätisches Forschungsinstitut

Prof. Dr.-Ing. habil. Florian Seitz

Technische Universität München
Arcisstraße 21
80333 München