The Helmholtz Centre for Environmental Research (UFZ) with its 1,100
employees has gained an excellent reputation as an international competence
centre for environmental sciences. We are part of the largest scientific
organisation in Germany, the Helmholtz association. Our mission: Our research
seeks to find a balance between social development and the long-term
protection of our natural resources.
The PhD Colleg LISA with 4 Phd positions will be launched in 2023. LISA is
about exploring the multifunctionality of cultural landscapes in Germany and
to examine the effects of climate change and land use in a model-based
The main task of this position (PhD#3) is the development of a smart
interface between OpenGeoSys (OGS) and the mesoscale Hydrologic Model mHM
that allows for targeted two-way coupling between the both tools, and which
will be then used to investigate the interaction between changing groundwater
levels, soil moisture and groundwater recharge, and their effects on the root
zone (FORMIND). This work will help to identify cross-model sensitivities
and will provide improved soil moisture and groundwater recharge products for
the mHM-based UFZ Drought Monitor.
Creation of a model catalog to investigate how the groundwater table
changes affects soil moisture and under which conditions a transfer takes
place and how this can be described quantitatively.
Using machine learning, the catalog data will be classified into more
easily understood and groupable parts (clustering) and spatial area
references will be established.
Transfer functions will then be developed based on the most significant
groupable and dominant parts of the catalog.
These transfer functions will then be implemented in mHM, OGS or FINAM.
The upscaling itself is to be performed using MPR.
The influence of the interface on the model results (mHM, OGS FORMIND)
will be investigated using the LandTrans demonstration catchments.
Collaboration among the four doctoral students within the PhD college
(e.g., discussion groups, synthesis paper, joint conference attendance)
Excellent technical facilities which are without parallel
The freedom you need to bridge the difficult gap between basic research
and close to being ready for application
Work in inter-disciplinary, multinational teams
Excellent links with national and international research networks
Excellent support and optimal subject-specific and general training with
our HIGRADE graduate school
Remuneration in accordance with the TVöD public-sector pay grade 13
An excellent Master's degree in the research field of Earth and
Environment, including systems science, mathematics, and physics.
Experience or training in areas such as soil science, soil physics, soil
hydrology, hydrogeology, hydrology is a plus.
Experience in modeling and analysis of complex systems.
Good understanding of geospatial data (raster, vectors), and basic
knowledge of machine learning techniques
Proficiency in computer programming (e.g., C++, Python).
Strong interest in studying regional impacts of groundwater level changes
on the vadose zone.
Excellent knowledge of English, both written and spoken, and a dedication
to publishing in international journals
High motivation to work in an international and interdisciplinary team.