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Michael Hintz, Fellowship grant 2015

Theoretical Analysis and Large-Eddy Simulations of the Propagation of Land-Surface Heterogeneity in the Atmosphere


The GSGS fellowship grant helped me a lot in the final phase of my PhD project. The grant period was from January to March 2015. The focus of my PhD thesis is on the quantification and propagation of land-surface heterogeneity in the atmosphere. The research is imbedded in the DFG funded Transregional Collaborative Research Centre 32 Patterns in Soil-Vegetation-Atmosphere-Systems: Monitoring, Modelling and Data Assimilation as a part of the D6 project Large-Eddy Simulation of Atmosphere and Land Interactions over Heterogeneous Surfaces.

During the funding period, I completed several numerical simulations with the Large-Eddy Simulation Atmosphere-Land-surface Model (LES-ALM) [Shao et al., 2013]. The simulations were conducted with the Cologne High Efficient Operating Platform for Science (CHEOPS). It was necessary to use CHEOPS because of the high spatial resolution of input data. Due to large amount of input data, the temporal resolution had to be increased, which led to the need of high performance computing. Furthermore, I applied the entropy spectrum method to the results of the numerical simulations [Hintz et al., 2014]. The outcome of this analysis and its interpretation was one of the core features of my PhD thesis.

In addition, I help finalizing several research papers during the grant period. One of these research papers dealt with the decomposition of land-surface heterogeneity. In this paper, the Orthogonal Probability Density Function Transform was invented [Liu et al, 2015]. In summary, I conclude that the GSGS fellowship grant is a beneficial arrangement for scientists. 

Hintz, M., S. Lennartz-Sassinek, S. Liu, Y. Shao (2014), Quantification of land-surface heterogeneity via entropy spectrum method, Journal of Geophysical Research Atmospheres, 119 (14), doi: 10.1002/2014JD021825 

Shao, Y., S. Liu, J. Schween, and S. Crewell (2013), Large-eddy atmosphere-land surface modeling over heterogeneous surfaces: Model development and comparison with measurements, Boundary Layer Meteorology, 148(2), 333 – 356, doi: 10.1007/s10546-013-9823-0

Published publication during the grant period:

Liu, S., Y. Shao, M. Hintz, and S. Lennartz-Sassinek (2015), Multiscale decomposition for heterogeneous land-atmosphere systems, Journal of Geophysical Research Atmospheres, 120, doi: 10.1002/2014JD022258

 

Michael Hintz 

PhD student 

PhD Project: TR32/D6 Large-Eddy Simulation of Atmosphere and Land Interactions over Heterogeneous Surfaces

Institute for Geophysics and Meteorology

Thesis: Theoretical Analysis and Large-Eddy Simulations of the Propagation of Land-Surface Heterogeneity in the Atmosphere

Professor Dr. Yaping Shao,  Atmospheric Modelling

Defense: June 2015