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Showing 1 to 10 of 10 for “"Ocean General Circulation Models"”.
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Adaptive error estimation in linearized ocean general circulation models
… such as the Kalman filter, are routinely used in oceanography. The statistics of the model and measurement errors need to be specified a priori. In this study we address the problem of estimating model and measurement error statistics from observations. We start by testing the Myers and Tapley …
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Adaptive error estimation in linearized ocean general circulation models
… such as the Kalman filter, are routinely used in oceanography. The statistics of the model and measurement errors need to be specified a priori. In this study we address the problem of estimating model and measurement error statistics from observations. We start by testing the Myers and Tapley …
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The Role of diapycnal mixing in coupled atmosphere-ocean general circulation models
The value of ocean diapycnal diffusivity (v) sets the rate at which dense bottom water can be mixed<br/>up through the stratified water column and thus plays an important role in the meridional overturning<br/>circulation (MOC). Previous idealised experiments and simplified theory suggest that the …
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The Reversibility/irreversibility of the Thermohaline Circulation After Its Shutdown: Simulations From a Hierarchy of Climate Models
The thermohaline circulation (THC) in the North Atlantic plays a vital role in explaining past abrupt climate changes and in maintaining the current climate. Its remarkable nonlinear dynamics, first demonstrated by Stommel, has been supported by different types of models. This has led to concern …
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Sensitivity of climate change to diapycnal diffusivity in the ocean
The diapycnal diffusivity of the ocean is one of the least known parameters in cur- rent climate models. Measurements of this diffusivity are sparse and insufficient for compiling a global map. Inferences from inverse methods and energy budget calculations suggests as much as a factor of 5 …
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Exploring the potential impacts of climate change on North America's Laurentian Great Lakes tourism sector
… the results of the analysis of atmospheric-ocean general circulation models (AOGCMs) and Variable Infiltration Capacity (VIC) model simulations show that climate change could lead to significant changes in winter weather and extreme weather in the Great Lakes region and, subsequently, impact …
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Life Cycle Assessment of Select Agricultural Practices: Assessing the Potential for Climate Mitigation
… with data downscaled from eight atmosphere-ocean general circulation models (AOGCMs) with three emissions pathways reflecting low, medium and high greenhouse gas scenarios. Soil properties were gathered from the Soil Survey Geographic Database and data on crop rotation was derived from …
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Understanding Drivers of Stratospheric Ozone Change and Fingerprinting its Recovery
… on the order of tens of gigagrams per year, the ocean’s role as both a natural source and sink of ODSs becomes increasingly important. However, these processes have often been overlooked or highly simplified in past ozone assessments. Using a hierarchy of models, from simple box models to global …
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Biogeochemical Modeling of the Response of Forest Watersheds in the Northeastern U.S. to Future Climate Change
… climate projections from several atmosphere ocean general circulation models (AOGCMs) under different carbon dioxide (CO2) emissions scenarios. The impacts of changing climate on terrestrial ecosystems have been assessed by observational, gradient, laboratory and field studies; however, …
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Uncertainty Quantification in Earth System Models Using Polynomial Chaos Expansions
… stochastic responses of various earth system models to different random sources, using polynomial chaos (PC) approaches. The following earth systems are considered, namely the HYbrid Coordinate Ocean Model (HYCOM, an ocean general circulation model (OGCM)) for the study of ocean circulation in …