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Full-Text Articles in Physical Sciences and Mathematics
Mri: Acquisition Of A High Performance Cluster For The University Of Maine Scientific Grid Portal, Phillip M. Dickens, Yifeng Zhu, Bruce E. Segee, James L. Fastook, Sudarshan S. Chawathe
Mri: Acquisition Of A High Performance Cluster For The University Of Maine Scientific Grid Portal, Phillip M. Dickens, Yifeng Zhu, Bruce E. Segee, James L. Fastook, Sudarshan S. Chawathe
University of Maine Office of Research Administration: Grant Reports
This project, acquiring a cluster to establish a scientific grid portal in Maine, aims to enable projects requiring large datasets. The work makes available to the wider community results such as widely-used whole-ice sheet models, tools for climate change research, prototype versions of object-based caching system (bundled with MPI-IO implementation developed at Argonne National Lab), the data management system, real-time animations, videos, etc. Additionally, the portal provides the larger community the compute power, storage capacity, and rendering engine to execute very high-resolution models, and receive animations and other visualized information in real time.
Broader Impact: The infrastructure enhances understanding of …
Itr: A Computational Framework For Observational Science: Data Assimilation Methods And Their Application For Understanding North Atlantic Zooplankton Dynamics, Andrew J. Pershing
Itr: A Computational Framework For Observational Science: Data Assimilation Methods And Their Application For Understanding North Atlantic Zooplankton Dynamics, Andrew J. Pershing
University of Maine Office of Research Administration: Grant Reports
This project will develop a modular data assimilation system, investigate several algorithms to make data assimilation more efficient, and will apply this system to investigate zooplankton dynamics in the North Atlantic. The goal of data assimilation is to find the value of the control variables (typically, the initial conditions or boundary conditions or model parameters) producing the best agreement between the model and the data. A data assimilation system consists of a forward model representing known dynamics. This model is integrated and the deviation between its predictions and available observations are quantified by a cost function. An adjoint model, representing …
Modeling Ice Streams, Aitbala Sargent
Modeling Ice Streams, Aitbala Sargent
Electronic Theses and Dissertations
Modeling glacier and ice sheet flow is a computationally challenging problem. The most challenging part in simulating ice sheet flow is modeling the fastest moving part of ice sheets, ice streams. In the first part of the thesis, we have constructed two numerical models of isothermal ice stream flow, a three-dimensional full-Stokes ice-sheet/ice-stream/ice-shelf model and a modified MacAyeal-Morland ice-stream/ice-shelf model. In the second part of the thesis, we studied the possibility of using SuperLU-DIST multiprocessor software package for solving the systems of linear equations generated by the model. The uniqueness of the modified MacAyeal-Morland model is in its inclusion of …