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Filtering by: Creator Schmittner, Andreas Advisor Schmittner, Andreas

Evaluation of a Variable Mixing Efficiency Parameterization on the Simulation of Last Glacial Maximum (LGM) Oceanic Circulation

Creator:

Thorstensson, Danil

Abstract:

This study tested the utility of a variable mixing efficiency formulation proposed by Mashayek, et al. (2017) for use in oceanographic models other than the modern, pre-industrial ocean. This formulation is used to calculate diapycnal (vertical) mixing due to unresolved subgrid-scale processes. Results from Last Glacial Maximum (LGM) simulations for...

Resource Type:

Honors College Thesis

Full Text:

Andreas Schmittner, Mentor, representing CEOAS
The Ocean Circulation and Carbon Cycle during the Last Glacial Maximum

Creator:

Muglia, Juan

Abstract:

During the Last Glacial Maximum (LGM, ∼ 21 ky before present) the atmospheric CO2 concentration was about 100 ppm lower than its pre-industrial (PI)value. The missing carbon from the atmosphere must have been stored in thedeep ocean during this period, but the mechanisms driving such re-distribution ofthe carbon cycle are...

Resource Type:

Dissertation

Full Text:

Circulation and Carbon Cycle during the Last Glacial Maximum Abstract approved: Andreas Schmittner During
Nitrogen isotopes in a global ocean biogeochemical model : constraints on the coupling between denitrification and nitrogen fixation

Creator:

Somes, Christopher J.

Abstract:

We present a new nitrogen isotope model incorporated into the three-dimensional ocean component of a global Earth System Climate Model designed for millennial timescale simulations. The model includes prognostic tracers for the stable nitrogen isotopes, ¹⁴N and ¹⁵N, in the nitrate (NO₃ˉ), phytoplankton, zooplankton, and detritus variables of the marine...

Resource Type:

Masters Thesis

Full Text:

: Andreas Schmittner We present a new nitrogen isotope model incorporated into the three-dimensional