Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"Ice model"”.
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A Coupled Atmosphere - Sea Ice Model Study of the Role of Sea Ice in Climatic Predictability
… 10 simulations with a coupled atmosphere-sea ice model are made and a 30-day mean climatic state is calculated for each ensemble for the period of November 11 to December 10. Initially, the light ice ensemble has a thick ice cover extending southward to 75(DEGREES)N. The heavy ice ensemble …
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A coupled atmosphere-sea ice model study of the role of sea ice in climatic predictability
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-16T15:17:03Z No. of bitstreams: 1 1982_bennett.pdf: 6713787 bytes, checksum: 16bc136dcf3930484756f727053a5d5f (MD5)
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Deformations of characters, metaplectic Whittaker functions, and the Yang-Baxter equation
… between characters of representations and lattice models in statistical mechanics. The bridge was first formed from Kuperberg's solution to the alternating sign matrix (ASM) conjecture. Kuperberg's proof of this conjecture, which enumerates ASMs, utilized a Yang-Baxter equation for a square ice …
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Modelling sea ice floe fields
This thesis is concerned with the modelling of sea ice, particularly in regions where it is composed of individual floes interacting through collisions. This has been done by modifying and extending existing models that have demonstrated their ability to simulate sea ice in various Arctic and …
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Modelling Sea-Level Reconstructions from Southern Greenland: Implications for Glacially-Induced Faulting
Understanding the past evolution of the Greenland ice sheet (GrIS) is important for accurately simulating its future behavior and thus its contribution to global mean sea level rise. Data and models related to glacial isostatic adjustment (GIA) have provided critical constraints on past GrIS …
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Experimental and Modeling of Pneumatic Tire Performance on Ice
The tire-ice interaction is a highly complex phenomenon, which has a direct influence on the overall performance of the pneumatic tire. From tire-terrain interaction dynamics, it is evident that icy road conditions and tire operational parameters play a vital role in determining the overall …
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Pneumatic Tire Performance on Ice
… to have very high passenger safety. Driving on ice, though, still happens to be one of the driving conditions of low safety. A multitude of factors were identified by various studies to contribute to the complex frictional mechanism at the tire-ice interface. The tire is only force transmitting …
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Wind-driven circulation on a shallow, stratified shelf
… 1988-89 is carried out through a combination of modeling, scale estimates, and data analysis. We develop a prognostic one-dimensional mixed layer model which is coupled to a thermodynamic ice model. Our model contains a representation of the lowest order boundary layer dynamics and adjustable …
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Integration of Higher-Order Physics in the Community Ice Sheet Model: Scientific and Software Concerns
The Community Ice Sheet Model (CISM) is a next-generation land ice model that is designed to answer important questions regarding the response of Earth’s land ice to climate forcing. The program extends Glimmer, an ice sheet model based on the shallow ice approximation. This thesis concerns a …
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Integration of Higher-Order Physics in the Community Ice Sheet Model: Scientific and Software Concerns
The Community Ice Sheet Model (CISM) is a next-generation land ice model that is designed to answer important questions regarding the response of Earth’s land ice to climate forcing. The program extends Glimmer, an ice sheet model based on the shallow ice approximation. This thesis concerns a …
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Using sea-level and land motion data to develop an improved glacial isostatic adjustment model for the British Isles
… to the constraints that can be provided on key model parameters such as regional ice sheet history, viscoelastic earth structure and the global meltwater (eustatic) signal. Many past studies have used as their primary observable the high quality relative sea level (RSL) data from this region. …
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Theoretical and experimental studies of heterogeneous chemical processes leading to stratospheric ozone depletion
… reactions involving HC on crystalline ice and nitric acid trihydrate (NAT) are of fundamental interest to physical chemists, because such reactions yield "active" chlorine compounds that are readily photolyzed to yield radicals responsible for the annual destruction of polar …
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On the meridional heat transport and its partition between the atmosphere and oceans
… between the atmosphere and oceans using models and data. I focus on three primary questions: (1) What is the total heat transport and its partition between the two fluids? (2) What sets the magnitude of the total heat transport and to what extent is it sensitive to the details of …
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Modeling convection in the Greenland Sea
… 1988-89 is carried out through a combination of modeling, scale estimates, and data analysis. We develop a prognostic one-dimensional mixed layer model which is coupled to a thermodynamic ice model. Our model contains a representation of the lowest order boundary layer dynamics and adjustable …
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The effects of precipitation and river runoff anomalies in a coupled ice-ocean model of the Arctic
A coupled ice-ocean model of the Arctic Ocean and adjacent seas is developed in order to study the effects of anomalies of precipitation and river runoff on sea ice. A dynamic-thermodynamic sea ice model is coupled to an ocean general circulation model which includes a turbulence closure scheme for …
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Dynamics of Ocean Waves in a Continuous Sea Ice Cover
… and swell incident on a continuous cover of sea ice can become coupled to the ice and propagate as flexural-gravity waves. These ice-coupled waves are determined by a dispersion equation and attenuation coefficient which depend critically on the material properties of the sea ice. Two models of …
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Modeling convection in the Greenland Sea
… 1988-89 is carried out through a combination of modeling, scale estimates, and data analysis. We develop a prognostic one-dimensional mixed layer model which is coupled to a thermodynamic ice model. Our model contains a representation of the lowest order boundary layer dynamics and adjustable …
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Modeling Circulation Dynamics and Submarine Melt in Greenland Fjords
Meltwater accumulated on the Greenland Ice Sheet drains to glacier beds, discharging into fjords hundreds of meters below sea level. The injection of meltwater at depth generates an upwelling plume that entrains warm ocean water as it rises along the terminus, increasing submarine melt and driving …
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Reversibility of Sea Ice and Climate under Global Change
… by recent satellite observations of Arctic sea ice age, we investigate how the properties of first-year and multiyear ice regulate sea ice area and volume. Using an autoregressive model of sea ice and numerical simulation with a global dynamic-thermodynamic sea ice model that traces first-year …
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Lagrangian Parcel Volume method applied to icing surfaces to predict impact efficiency
When trying to predict how and where ice will accrete on an aircraft, engineers first need to be able to track the path and concentration of water particles; this will allow for a better representation of water impingement and ice accretion. This tracking can be accomplished by using either a …
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