Stefanie Rost

PhD student since July 2005
Earth System Analysis Research Domain
Biosphere-Group

Contact
Potsdam-Institute for Climate Impact Research (PIK)
Telegrafenberg A62,
P.O. Box 60 12 03
D-14412 Potsdam, Germany
Phone.: +49-331-288-2422
Email: rost@pik-potsdam.de

Research Areas

GREENWATER: Consistent assessment of global green, blue and virtual water fluxes in the context of food production: regional stresses and worldwide teleconnections

• Improving blue water representation in the dynamic global vegetation and water balance model LPJmL (Lund-Potsdam-Jena managed land)
  
• Implementation of simple but process-based schemes for river-routing, lake water storage and irrigation into the LPJmL model
  
• Hydrologic validation of the improved model

• Consistent assessment of productive green water (soil water transpiring through plants), unproductive green water (evaporation from bare soil, vegetation canopies or open water bodies) and blue water (available liquid water in rivers, lakes and aquifers)
• Estimation of the virtual water content of crops (the amount of green or blue water required to produce a unit of crop yield)
• Consistent assessment of virtual water trade between nations and regions

• Comparison of model results as simulated by two different models (LPJmL and WaterGAP)
• Development of new water stress indicators, which combine blue and green water requirements

Coordinators: Dieter Gerten, Petra Döll and Wolfgang Cramer

Funding entity: German Research Foundation (DFG, Deutsche Forschungsgemeinschaft)

Duration: 2005 - 2008

Cooperating institution:  Johann Wolfgang Goethe University of Frankfurt, Institute of Physical Geography (Felix Portmann, Stefan Siebert, Petra Döll)

Endorsement: partner project of the Global Water System Project