TIGERS-TALK 19 19.10.17 Carsten Montzka
Integrated hydrological simulations from groundwater to atmosphere and the role of soil moisture observations
Dr. Carsten Monstska, Forschungszentrum Juelich GmbH, Germany
The Terrestrial System Modeling Platform (TerrSysMP) has been developed to integrate all important components of the hydrological cycle into one system. With that tool water and energy fluxes as well as their interactions between groundwater, surface soil water and atmospheric processes are simulated. It is a (quasi-)operational monitoring/forecasting system from catchment to continental scale with convection resolving simulations. TerrSysMP consists of the weather prediction model of the German Weather Service (COSMO), the land surface model CLM and the subsurface/groundwater model ParFlow. Parallel data assimilation algorithms are included, which are mainly used for integrating soil moisture measurements and groundwater wells at the moment.
Within this coupled system soil moisture plays a key role, because it regulates not only infiltration and runoff, but also latent and sensible heat fluxes. Novel in situ (wireless soil moisture sensor networks, cosmic ray neutron probes) and spaceborne (active and passive microwave sensors at different frequencies) observations are necessary to obtain the full spatial and temporal heterogeneity of soil moisture. Moreover, an adequate scaling of soil moisture including respective parameters is needed to inform numerical weather prediction models and global climate models. State-of-the-art and solutions will be presented.
Carsten Montzka received the Ph.D. degree in geography from the University of Bonn, Bonn, Germany, in 2007, for the integration of multispectral remote sensing data into nitrogen cycle simulations. In 2004, he joined the Institute of Bio- and Geosciences: Agrosphere (IBG-3) of the Forschungszentrum Jülich, Jülich, Germany. Since 2007, he has been working on passive microwave retrieval for soil moisture and SMOS and SMAP validation activities. This includes modeling and upscaling of surface soil moisture, coupling hydrological models with microwave emission models, multiscale model calibration, and comparison with and integration of airborne remote sensing data. His current work has mainly been focused on the development of multiscale soil moisture data assimilation techniques within the Helmholtz-Alliance on “Remote Sensing and Earth System Dynamics” as well as on airborne active/passive microwave campaigns to support the soil moisture active-passive mission. Recently, he has been selected for the Arab-German Young Academy for Sciences and Humanities, Berlin, Germany.
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19 octobre 2017