Landfast ice in the Arctic: parameterization in numerical modeling and effects on the hydrography ...

• Main Author: Liu, Yuqing
• Format: Thesis
• Language: English
• Published: Universität Bremen 2023
• Subjects: Landfast ice; Arctic; Parameterization; 530; albedo; Climate change; Sea ice
• Online Access: https://dx.doi.org/10.26092/elib/2100; https://media.suub.uni-bremen.de/handle/elib/6761

The Arctic amplification of climate change is strongly connected to the sea ice in the Arctic because of the sea ice albedo and insulation effects. This thesis presents numerical modeling studies on landfast ice and the kinetic energy dissipation within sea ice in the Arctic. Landfast ice is sea ice that is nearly immobile and attached to the coast. As an extension to the land, landfast ice provides a platform for tourism, transportation, and hunting for the local communities, as well as for oil and gas drilling and scientific observation. Although landfast ice plays an important role in the Arctic coastal regions, it is challenging to represent landfast ice in numerical sea ice models with a standard viscous-plastic (VP) rheology. In this thesis, I implement a lateral drag parameterization to improve the representation of the landfast ice in the sea ice model and study the kinetic energy dissipation by sea ice internal stress. This thesis has three scientific questions: (1) How can we improve the ...