Combining experiments with simulations
Scientists in Area T use experiments as well as simulations to investigate the ocean and atmosphere. High-resolution measurements are used e.g. to construct horizontal and vertical wavenumber power spectra or to construct energetically consistent parameterizations of energy transfers. Furthermore, observations with high-resolution data and simulations help assessing the mixing processes active in a descending gravity plume.
Specific research questions in Area T are:
- How to quantify and parameterise stratified turbulence in the atmosphere?
- What are processes, energy transfers and interactions between small-scale turbulence, gravity waves and eddies in the surface and bottom boundary layers of the ocean?
Burchard, H., Basdurak, N. B., Gräwe, U., Knoll, M., Mohrholz, V., and Müller, S. (2017). Salinity inversions in the thermocline under upwelling favorable winds. Geophysical Research Letters, 44, doi:10.1002/2016GL072101.
Becker, E., and Vadas, S. L. (2018). Secondary Gravity Waves in the Winter Mesosphere: Results From a High‐Resolution Global Circulation Model. Journal of Geophysical Research: Atmospheres, 123(5), 2605-2627.
North, R. P., Jochumsen, K., and Moritz, M. (2018). Entrainment and Energy Transfer Variability Along the Descending Path of the Denmark Strait Overflow Plume. Journal of Geophysical Research: Oceans, 123(4), 2795-2807.
Schaefer-Rolffs, U. and Becker, E., (2018). Scale-invariant Formulation of Momentum Diffusion for High-Resolution Atmospheric Circulation Models , Monthly Weather Review, 146, 1045-1062, doi:10.1175/MWR-D-17-0216.1 .
Vadas, S. L., Zhao, J., Chu, X., and E. Becker (2018). The excitation of secondary gravity waves from local body forces: Theory and observation.Journal of Geophysical Research: Atmospheres, 123(17), 9296-9325.
MacCready, P., Geyer, W.R. , and Burchard, H., (2018).Estuarine exchange flow is related to mixing through the salinity variance budget, Journal of Physical Oceanography, 48, 1375-1384, https://doi.org/10.1175/JPO-D-17-0266.1 .
Burchard, H., Bolding, K., Feistel, R., Gräwe, U., MacCready, P., Klingbeil, K., Mohrholz, V., Umlauf, L., and van der Lee, E. M. , (2018). The Knudsen theorem and the Total Exchange Flow analysis framework applied to the Baltic Sea, Progress in Oceanography, 165, 268-286 , https://doi.org/10.1016/j.pocean.2018.04.004 .
Schaefer-Rolffs, U. (2018). A comparison of different solutions for the Dynamic Smagorinsky Model applied in a GCM. Meteor. Z., 27, 249–261, doi:10.1127/metz/2018/0885
Schaefer-Rolffs, U. (2018). The scale invariance criterion for geophysical fluids. European Journal of Mechanics-B/Fluids, Vol. 74, 92-98.
Liang, X., and M. Losch (2018). On the effects of increased vertical mixing on the Arctic Ocean and sea ice. Journal of Geophysical Research: Oceans, 123, 9266–9282. doi.org/10.1029/2018JC014303