Essays about: "ice sheet simulations"

Showing result 1 - 5 of 8 essays containing the words ice sheet simulations.

  1. 1. Performance Optimization of Ice Sheet Simulation Models : Examining ways to speed up simulations, enabling for upscaling with more data

    University essay from Uppsala universitet/Avdelningen för beräkningsvetenskap

    Author : Fredrika Brink; [2023]
    Keywords : performance optimization; Python libraries; ice sheet simulations; Numba; Joblib; upscaling; parallelization;

    Abstract : This study aims to examine how simulation models can be performance optimized in Python. Optimized in the sense of executing faster and enabling upscaling with more data. To meet this aim, two models simulating the Greenland ice sheet are studied. The simulation of ice sheets is an important part of glaciology and climate change research. READ MORE

  3. 2. Numerical Solvers of the p-Stokes Equations with Applications in Ice-Sheet Dynamics

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Sebastian Myrbäck; Jonatan Risberg; [2020]
    Keywords : ;

    Abstract : In glacier dynamics – i.e. the field of research concerning the movement of ice – intricate mathematical models are used to describe its motion. Ice can be considered as a highly viscous, non-Newtonian fluid, obeying a set of equations closely related to the well-known Navier-Stokes equations describing classical fluid mechanics. READ MORE

  4. 3. Numerical ice sheet modelling using FEniCS

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : André Löfgren; [2019]
    Keywords : ;

    Abstract : The increase in computational power in the last 20 years has made it feasible to solve the full Stokes equation for ice flow, using finite element methods (FEM). However, the numerical properties of these equations remains largely unknown. This is due to their nonlinear nature, which makes them hard to analyze mathematically. READ MORE

  5. 4. Climate Change and Precipitation Variability Influence on the Greenland Ice Sheet

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Author : Jennie Olsson; [2018]
    Keywords : Physics; Ice Sheet; Surface Mass Balance; SMB; Representative Concentration Pathways; RCP; Climate Change; Greenland; Precipitation; Precipitation Variability; Glaciers; Glacier; Meteorology; Greenhouse Effect; Greenhouse Gas; Future Climate; Climate; Physics and Astronomy;

    Abstract : Climate changes have a large impact on precipitation patterns and precipitation variability change. With this in mind, precipitation over Greenland is studied. This is done for present day precipitation model data from 1991-2010 compared to future model simulations of precipitation for 2081-2100. READ MORE

  6. 5. Analysis of the Temporal Variability of Positive Degree Day Factors

    University essay from Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionen

    Author : Hanna Rönnberg; [2016]
    Keywords : Positive Degree Day Surface Mass Balance; Physics and Astronomy;

    Abstract : The surface mass balance determines the growth or decay of an ice sheet, by taking the difference between accumulation and ablation. In this thesis snow and ice ablation is related to 2m-temperature through the positive degree day method. READ MORE