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Dr. Andreas Hartmann



Chair of Hydrology
Albert-Ludwigs-University of Freiburg
D-79098 Freiburg

Fon: +49 (0)761 - 203 3520
Fax: +49 (0)761 - 203 3594
E-Mail: hartmann.gif
Room-No: 01.019

andreas hartmann





Almost a quarter of the world population obtains its drinking water from karst systems.

Climate models indicate that many karst regions will experience a serious decrease of precipitation and a strong increase of temperature. The predicted changes can have a significant impact on the hydrological regimes and suggest a significant increase in stress on karst water resources – even without consideration of increasing water demand. Simulation models can quantify the impacts of climate and land use change. However, in most cases a lack of data to set up the models properly or deficiencies in the process representation within the model structures make predictions of karst water resources highly uncertain and applications at large scales almost impossible.
Hartmann, et al. (2014, RoG)


Better prediction models

There is a way to reduce the lack of available information by adding more information than only discharge to the model calibration. Hydrochemical data is often available because large karst springs are frequently monitored for their water quality. Using these observations more process-based karst models can be applied. Due to a better representation of karst processes such models have higher reliability in water resources prediction.
Hartmann, et al. (2013, WRR)   |   Hartmann, et al (2013, AWR)   |   Hartmann, et al. (2012, HESS)


Large scale simulations

The forcings for large scale karst simulation models are readily available. But difficulties in the assessment of model parameters at such scales still prohibit large scale applications. Newly developed regionalization methods including the use of signatures may allow the transition of model parameters to ungauged karst aquifers. However, they require adaptions especially regarding the evolution of the dissolution enlarged karst network and the respective model parameters.
Hartmann et al. (2014, EGU)   |   Hartmann et al. (2013, HESS)


Challenge of prediction

The coupling of climate simulation models and karst models results in strong uncertainties. Applying karst models backwards may allow to reduce this uncertainty. By defining critical thresholds of water availability, the models can be solved backwards to determine the range of respective climatic or land use conditions. Additionally, climate archives in karst caves (speleothems) may be used to understand how the hydrological system reacted on extreme climatic changes in the past and how it may react in the future.
Hartmann et al. (2014, EGU)   |   Hartmann et al. (2012, JoH)


BIOGRAPHY                                                                                                                  up


from July 2014 Lecturer at the Chair of Hydrology, Faculty of Environment and Natural Resources, Albert-Ludwigs-University of Freiburg, Germany
from May 2013 Postdoc at the Department of Civil Engineering, University of Bristol, UK
Mar 2014 - May 2014 Visiting Fellow at the Department of Civil Engineering, McGill University, CA
Jan 2013 - Apr 2013 Postdoc at the Chair of Hydrology, Faculty of Environment and Natural Resources, Albert-Ludwigs-University of Freiburg, Germany
Mar 2009 - Jan 2013 PhD student at the Chair of Hydrology, Faculty of Environment and Natural Resources; Title:“Modeling karst hydrology and hydrochemistry in different climates and at different scales considering uncertainty” , Albert-Ludwigs-University of Freiburg, Germany
Mar 2009 - Apr 2013 Member of the Graduate School "Environment, Society and Global Change", Faculty of Environment and Natural Resources, Albert-Ludwigs-University of Freiburg, Germany
Oct 2003 - Sep 2008 Student of Diplom Hydrology (MSc equivalent); Minors: Geology, Meteorology, Mathematics; Albert-Ludwigs-University of Freiburg, Germany



from July 2014 Research Scientist at the Chair of Hydrology, Faculty of Environment and Natural Resources, Albert-Ludwigs-University of Freiburg, Germany
May 2013 - June 2014 Research Associate at the Department of Civil Engineering, University of Bristol, UK
Mar 2008 - Apr 2013 Research Assistant at the Institute of Hydrology, Faculty of Environment and Natural Resources, Albert-Ludwigs-University of Freiburg, Germany


Honours and Awards

Dec 2013 Prize for excellent commitment for PhD students by the International Graduate Academy (IGA) of the Albert-Ludwigs-University of Freiburg, Germany
Jun 2013 Groundwater research prize of the City of Dresden
Jun 2013 Research spotlight in an American Geophysical Union (AGU) journal (Hartmann et al. 2013b)
Apr 2013 Jim Dooge award for best 2012 publication in Hydrology and Earth System Sciences (Hartmann et al. 2012c)
Feb 2013 2a Postdoc scholarship by the DAAD
Jan 2013 Defense of PhD with highest honor (summa cum laude)
Nov 2012 
2nd prize in the "Young Scientist of the Year" competition, awarded by the big German newspaper Die Zeit and academics.de for an excellent research project and social engagement
Apr 2011 Travel Award of the European Geosciences Union (EGU)
Jan 2010 3a PhD scholarship by the Evangelisches Studienwerk Villigst e.V.
Sep 2009 Young Karst Researcher Prize, International Association of Hydrogeologists IAH, Commission on Karst Hydrology
Feb 2009 Alumni award of the Faculty of Forest and Environmental Sciences, Albert-Ludwigs-University of Freiburg, Germany, for an excellent final exam, social engagement and an excellent master thesis


Commisions and Memberships

2014 - today Member of the Commission on Karst of the International Association of Hydrogeologists IAH
2014 - today Member of the British Hydrological Society
2012 - today Member of the American Geophysical Union (AGU)
2011 - today Member of the German Hydrological Society (DHG)
2009 - today Member of the European Geosciences Union (AGU)


Academic Service

Journal Reviewing for Water Resources Research, Hydrology and Earth System Sciences, Journal of Hydrology, Journal of Hydrometeorology, Hydrological Processes, Science of the Total Environment, Environmental Earth Sciences Journal, Environmental Modeling an Software
Session convener and co-convener at the 2013 and 2014 Fall meeting of the American Geophysical Union (AGU) and the 2014 General Assembly of the European Geoscience Union (EGU)


Other Commitment

Nov 2012 - today Elected member of the UniWind advisory committee (www.uniwind.org), a Forum of Universities supporting researchers at the early stages of their careers
Jul 2011 - Nov 2012 Leader of the “Work Group on the legal status of PhD students and co-determination” at the PhD-Initiative
Jun 2011 - Nov 2012 Elected Representative of the PhD scholarshipholders my PhD foundation at the PhD-Initiative
Apr 2010 - today Member of the “Initiative to establish a PhD representation of the entire Freiburg University“
Mar 2009 - Nov 2012 Elected PhD representative of graduate school "Environment, Society and Global Change"
Oct 2007 - Sept 2008 Elected Student representative at three faculty commissions (“Fakultätsrat”, “Studienkommission”, “Berufsungskommission W3 Porfessur”) at the Faculty of  Faculty of Environment and Natural Resources, Albert-Ludwigs-University of Freiburg, Germany


PUBLICATIONS                                                                                                                  up

Journals (peer revied)

Hartmann, A, , Mudarra M., Andreo B., Marin A., Wagener T., and Lange J. (2014) Modeling spatio-temporal impacts of hydro-climatic extremes on a karst aquifer in Southern Spain. Water Resources Research, accepted.
Hartmann, A., Goldscheider, N., Wagener, T., and Weiler, M. (2014): Karst water resources in a changing world: Review of hydrological modeling approaches, Reviews of Geophysics, DOI: 10.1002/2013rg000443.
Rimmer A, A Hartmann (2014): Optimal hydrograph separation filter to evaluate transport routines of hydrological models. Journal of Hydrology. 514, 249-57.
Hartmann, A., Weiler, M., Wagener, T., Lange, J., Kralik, M., Humer, F., Mizyed, N., Rimmer, A., Barberá, J. A., Andreo, B., Butscher, C., and Huggenberger, P. (2013c): Process-based karst modelling to relate hydrodynamic and hydrochemical characteristics to system properties, Hydrology and Earth System Sciences, 17, 3305-3321, 10.5194/hess-17-3305-2013.
Hartmann, A., Wagener, T., Rimmer, A., Lange, J., Brielmann, H., and Weiler, M. (2013b): Testing the realism of model structures to identify karst system processes using water quality and quantity signatures, Water Resources Research, 49, 3345–3358, 10.1002/wrcr.20229. AGU research spotlight
Hartmann, A., Barberá, J. A., Lange, J., Andreo, B., and Weiler, M. (2013a): Progress in the hydrologic simulation of time variant recharge areas of karst systems – exemplified at a karst spring in Southern Spain, Advances in Water Resources, 54, 149-160, 10.1016/j.advwatres.2013.01.010.
Hartmann, A., Lange, J., Weiler, M., Arbel, Y., and Greenbaum, N. (2012c): A new approach to model the spatial and temporal variability of recharge to karst aquifers, Hydrol. Earth Syst. Sci., 16, 2219-2231, 10.5194/hess-16-2219-2012.
Jim Dooge award for best 2012 publication
Hartmann, A., Lange, J., Vivó Aguado, À., Mizyed, N., Smiatek, G., and Kunstmann, H. (2012b): A multi-model approach for improved simulations of future water availability at a large Eastern Mediterranean karst spring, Journal of Hydrology, 468-469, 130-138, 10.1016/j.jhydrol.2012.08.024.
Hartmann, A., Kralik, M., Humer, F., Lange, J., and Weiler, M. (2012a): Identification of a karst system’s intrinsic hydrodynamic parameters: upscaling from single springs to the whole aquifer, Environmental Earth Sciences, 65, 2377-2389, 10.1007/s12665-011-1033-9.
Samuels, R., Rimmer, A., Hartmann, A., Krichak, S., Alpert, P. (2010): Climate Change Impacts on Jordan River Flow: Downscaling Application from a Regional Climate Model. Journal of Hydrometeorology, 11(4): 860-879.DOI 10.1175/2010JHM1177.1


Book Chapters

Hartmann, A., A. Rimmer, J. Lange, T. Wagener, and M. Weiler (2012): Identifizierung und Evaluierung von Karstmodellen mittels systembeschreibender Zielfunktionen, in Wasser ohne Grenzen - Beiträge zum Tag der Hydrologie am 22./23. März an der Albert-Ludwigs-Universität Freiburg, herausgegeben von Markus Weiler, pp. 97-103, Institut für Hydrologie Freiburg, Germany. ISBN 978-3-942964-38-8
Rimmer, A., and A. Hartmann (2012): Simplified conceptual structures and analytical solutions for groundwater discharge using reservoir equations, in Water Resources Management and Modeling, edited by D. P. C. Nayak, InTech, ISBN 978-953-51-0246-5
Hartmann, A., Kralik, M., Humer, F., Lange, J., Weiler, M. (2010): Hydrological Modeling of an Alpine Dolomite Karst System. In: Andreo, B., Carrasco, F., Durán, J., LaMoreaux, J. (Eds.), Advances in Research in Karst Media. Springer, pp. 526.ISBN 978-3642124853


Selected Conference Contributions

Hartmann A, Gleeson T, and Wagener T (2014) Sensitivity of Mediterranean groundwater resources to potential climate futures. EGU General Assembly 16, EGU2014-7995.
Hartmann A, Gleeson T, Rosolem R, Pianosi F, and Wagener T (2014) Understanding recharge elasticity through large-scale simulations of Europe’s karst regions under varying climatic boundary conditions. EGU General Assembly 16, EGU2014-7976.
Hartmann A, Kobler J, Kralik M, Dirnböck T, Humer F, and Weiler M (2014) Deriving the time-variant transit time distributions of an Austrian karst system by a semi-distributed karst model. EGU General Assembly 16, EGU2014-7152. Invited presentation
Hartmann A. The challenge of predicting karst water resources in a changing world (2013):  American Geophysical Union 2013 Fall Meeting, San Francisco. Invited presentation
Hartmann, A., J. Lange, M. Weiler, Y. Arbel, and N. Greenbaum (2011): Modeling the variability of karstic recharge - a multi-objective approach, presented at European Geosciences Union General Assembly, Copernicus Geophysical Research Abstracts, Vienna (Austria). EGU travel award
Vivó Aguado, À., A. Hartmann, J. Lange, and R. L. Garcìa Bartual (2011): Assessment of spring water resources of the Faria Catchment,West Bank, paper presented at European Geosciences Union General Assembly, Vienna (Austria).
Hartmann, A., J. Lange, M. Weiler, and M. Kralik (2009): A "grey box" approach to model epikarst flow and hydrochemistry in different climatic regions, presented at Sustainability of the karst environment - dinaric karst and other karst regions, Center for karst, Plitvice Lakes (Croatia). Young Karst Researcher Prize



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