Implementation and evaluation of system processes in an earth system model

Universität Kassel

The length of the growing season of plants extended due to global warming during the last decades. The growing season will further extend with higher CO2 concentrations and warming in the future.

The phenological development of vegetation impacts the energy and water cycle through the albedo, the roughness length, and the turbulent fluxes of heat and CO2. This influences near-surface air temperature, precipitation and finally the boundary layer structure and cloud cover regime. The phenophases, in turn, depend on the vegetation type, the photo period, the ambient temperature and water availability. Warmer environmental conditions lengthen the growing season by an earlier start or later end. Precipitation and available soil water influence the variability during the phenological stages. These vegetation-atmosphere interactions need to be accurately represented in climate models to improve projections and ultimately advise climate change mitigation.

The phenological development is currently static in the regional climate model COSMO-CLM and not connected to photosynthesis. Therefore, this project will develope the model in this direction further.

At the Center of Environmental System Research the GRID-land group (Appl.-Prof. Dr. Schaldach / Dr. Tölle) is looking to fill a

Postdoc position (Implementation and evaluation of system processes in an earth system model),

starting as early as possible for an initial duration of 2 years, with an intended extension of another 1 year. The 100% position will be paid according to German public-sector level E13 (§ 2 Abs. 2 WissZeitVG).

Your responsibilities:
  • Implementation and evaluation of leaf phenology and photosynthesis from LPJ-GUESS into the regional climate model COSMO-CLM. Thereby, the photosynthesis will be related to atmospheric CO2 concentrations.
  • Configuration and of convection-permitting climate simulations with the regional climate model COSMO-CLM and the new implementation under present and future land use scenarios.

Contact address for additional information is Dr. Tölle, phone +49-561-804-6133, E-Mail:
Your profile:
  • A university PhD with an excellent grade
  • Either a background in Meteorology/Physics/Geoecology/Ecoinformatics or related disciplines
  • Interest to apply quantitative methods in an ecological context
  • Good knowledge of general programming language, ideally also Fortran/C/Python
  • Team orientation and motivation to advance our scientific knowledge about earth system modelling in the frame of global change
  • Excellent knowledge of English and good writing skills
Universität Kassel
CESR, Center of Environmental System Research
Wilhelmshöher Allee 47
34109 Kassel
Dr. Merja Tölle
(Ursprünglich) veröffentlicht am: 

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