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Doctoral Position in the Research Training Group "Integrated Hydrosystem Modelling" and at the interface to the Collaborative Research Centre "CAMPOS – Catchments as Reactors" at the University of Tübingen in strong cooperation with the University of Waterloo, Canada.
Motivation. Surface waters receive a diversity of micropollutants (e.g. pesticides, pharmaceuticals, personal care products) from diffuse sources like agriculture and point sources like wastewater treatment plants. These pollutants may change the water quality and impact aquatic organisms and ecosystems. Thus, it is of fundamental importance to understand processes and parameters that determine pollutant fate on a catchment scale in order to identify potential contaminant long-term sources and develop effective measures for river management. In addition to chemical analysis, toxicity may also serve as an indicator to monitor water quality from wastewater to drinking water. Applying cell-based bioassays allows investigating the cumulative effects of chemicals that exhibit the same mode of toxic action as addressed by the selected bioassays. The resulting effect-scaled concentrations, so-called bioanalytical equivalent concentrations (BEQs), can be used to understand the fate and effects of micropollutants in a river system by developing an effect-balance model that is based on the mass balance concept.
Approach. Data for substance concentrations are measured with chemical and bioanalytical tools in the catchment of the River Ammer, a tributary of the Neckar River in southwestern Germany, by colleagues within the Collaborative Research Center "CAMPOS". In addition, environmental parameters like discharge, main ions, DOC, and electrical conductivity are determined. The substances include pharmaceuticals (e.g. carbamazepine, diclofenac), pesticides (e.g. mecoprop, DEET), flame-retardants (e.g. TCPP, TDCPP), and fragrants (e.g. OTNE, HHCB). A chemical fate model is currently under development and includes one-dimensional stream flow, particle transport and reactive solute transport simulated by the advection-dispersion-reaction equation. This will be the basis to develop a new model concept that describes the fate of bioanalytical equivalent concentrations (BEQ) to simulate (eco)toxicological effects of chemical mixtures based on a mass balance approach. The main objective of this project is to expand the mechanistic numerical fate model for the Ammer River as outlined above by a module for toxicity equivalents. These models will be used to interpret both, the measured concentrations of dissolved and particle-associated micropollutants as well as the toxicity equivalents in the river. This will help to explain differences in pollutant fate and attenuation processes and allow the transfer of the new modelling concept to other rivers.
The position can be filled as early as possible, but not later than October 1, 2018 (duration: 3 years). The salary is based on the public-service regulations of the state of Baden-Württemberg (TV-L E13, 75%).
The potential candidate should have a Diploma or Master Degree in Hydrology, Environmental Engineering, Physics, Applied Mathematics, Systems Science, Geoecology, or Environmental Sciences and shall provide an excellent understanding of transport and transformation processes of chemical compounds within the environment. Knowledge of mathematical modelling and experience with software for numerical computing (e.g. Matlab, R) are required.
The main work place is in Tübingen; a six months research stay at the University of Waterloo, Canada, is integral part of the training. The RTG, CAMPOS and the participating Universities offer structured PhD programs with joint international training and supervision that support PhD candidates in their career phase as well as programs to support women in research and teaching and thus encourage applications from qualified female scientists. In the case of equivalent qualified and experienced candidates, physically challenged applicants are given preference.
Further information on the RTG (including the application form) can be viewed at www.hydromod.uni-tuebingen.de or will be provided by: Prof. Dr. Christiane Zarfl (christiane.zarfl@uni-tuebingen.de; phone: +49(0) 7071/29-76076) or Prof. Dr. Beate Escher (beate.escher@uni-tuebingen.de).
Please submit applications to hydromod@ifg.uni-tuebingen.de (ONE pdf-file, max. 5MB). Applications should include a letter of motivation, a CV, transcripts or degree certificates including grades, proof of special qualifications, prints of publications if applicable, the filled out application form and a list of at least three referees.
The International Research Training Group (IRTG) “Integrated Hydrosystem Modelling” at the Universities of Tübingen and Hohenheim (Germany), and Waterloo (Canada) targets at developing and applying numerical models of flow and reactive solute transport in coupled hydrosystems comprising of land-surface and subsurface compartments. These models are needed to assess the impacts of environmental change on water quantity and quality at catchment scale. The IRTG offers a structured PhD program at the German partner universities with joint international training and supervision. The main work place is in Tübingen; a six-month research stay at Waterloo is integral part of the training.
For the second project phase starting at June 1, 2015, we seek for 8 Doctoral Researchers (3 years, 75% TV-L E13 according to German public salary system) for the following topics:
Theme A: Flux Balances at the Land Surface A.4 Large-eddy simulation of the water budget in a small catchment A.5 Limitations of pollutant transformations in topsoils A.6 Variability and uncertainty in modelling the soil-vegetation-atmosphere nexus at the landscape scale A.7 Nitrate dynamics under climate and land-use change
Theme B: Biogeochemical Reactions in Catchments B.5 Modelling the fate of micropollutants in rivers B.6 Compound-specific isotope fractionation at catchment scale
Theme C: Uncertainty Assessment of Large-Scale Models C.4 Bayesian legitimacy of different hydro(geo)logical model concepts C.5 Prioritising major predictive uncertainty sources in coupled hydrosystem models
Theme D: Evolution of Catchments D.4 Vegetation-hydrology feedbacks D.5 Solute transport in hierarchical sedimentary deposits D.6 Hydrological controls of land-surface evolution
More information including an application form can be found at: www.hydromod.uni-tuebingen.dewww.hydromod.uni-tuebingen.de
Applicants must hold a MSc or equivalent degree in quantitative geosciences, civil and environmental engineering, physics, applied mathematics, or another field of science and engineering with appropriate specialization. Proficiency in numerical modelling and programing, as well as training in subsurface hydrology is required. Experience in using HydroGeoSphere is beneficial, but not mandatory.
Applications are to be submitted until January 31st, 2015 to hydromod@ifg.uni-tuebingen.de (ONE pdf-file, max. 1MB; publications can be sent separate). Applications should include a letter of motivation, CV, transcripts or degree certificates including grades, proof of special qualifications, prints of publications if applicable, the filled out application form, and a list of at least three referees.
Thema von Michael Finkel im Forum Konferenzen, Tagungen,...
Integrated Hydrosystem Modelling 2015, 7–10 April 2015, Tübingen, Germany
Internationally renowned specialists give their broader perspectives on recent issues in integrated modelling coupled terrestrial hydrosystem at catchment scale, including atmospheric and land-surface processes, surface-water bodies, and processes in the unsaturated soil zone and in groundwater.
We particularly encourage young researchers to attend the conference and discuss their work with distinguished specialists and peers.
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