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RISError Estimates for an Ocean General Circulation Model from Altimeter and Acoustic Tomography Data
Publisher: American Meteorological Society
Abstract: An offline approach is proposed for the estimation of model and data error covariance matrices whereby covariance matrices of model data residuals are ?matched? to their theoretical expectations using familiar least-squares ...
Linearization of an Oceanic General Circulation Model for Data Assimilation and Climate Studies
Publisher: American Meteorological Society
Abstract: A recipe for the linearization and state reduction of a general circulation model (GCM) is evaluated in a North Pacific test basin. The underlying assumption is that modern GCMs are, or will become, sufficiently accurate ...
Do Submesoscales Affect the Large-Scale Structure of the Upper Ocean?
Publisher: American Meteorological Society
Acoustical Measurement of Current and Vorticity beneath Ice
Publisher: American Meteorological Society
Abstract: An acoustical instrument has been developed to measure path-averaged horizontal current and vorticity in the subice boundary layer of the eastern Arctic during the spring of 1989. A triangular acoustic array of side 200 m ...
Atlantic to Mediterranean Sea Level Difference Driven by Winds near Gibraltar Strait
Publisher: American Meteorological Society
Abstract: Observations and numerical simulations show that winds near Gibraltar Strait cause an Atlantic Ocean to Mediterranean Sea sea level difference of 20 cm peak to peak with a 3-cm standard deviation for periods of days to ...
Source and Pathway of the Western Arctic Upper Halocline in a Data-Constrained Coupled Ocean and Sea Ice Model
Publisher: American Meteorological Society
Abstract: coupled ocean and sea ice model is used to investigate dense water (DW) formation in the Chukchi and Bering shelves and the pathways by which this water feeds the upper halocline. Two 1992?2008 data-constrained solutions ...
Using Green's Functions to Calibrate an Ocean General Circulation Model
Publisher: American Meteorological Society
Abstract: Green's functions provide a simple yet effective method to test and to calibrate general circulation model (GCM) parameterizations, to study and to quantify model and data errors, to correct model biases and trends, and ...
Impact of Data Assimilation on ECCO2 Equatorial Undercurrent and North Equatorial Countercurrent in the Pacific Ocean
Publisher: American Meteorological Society
Abstract: he impact of data assimilation on the transports of eastward-flowing Equatorial Undercurrent (EUC) and North Equatorial Countercurrent (NECC) in the Pacific Ocean from 145°E to 95°W during 2004?05 and 2009?11 was assessed. ...
A Near-Uniform Basin-Wide Sea Level Fluctuation of the Mediterranean Sea
Publisher: American Meteorological Society
Abstract: A new basin-wide oscillation of the Mediterranean Sea is identified and analyzed using sea level observations from the Ocean Topography Experiment (TOPEX)/Poseidon satellite altimeter and a numerical ocean circulation ...
Acceleration and Overturning of the Antarctic Slope Current by Winds, Eddies, and Tides
Publisher: American Meteorological Society
Abstract: AbstractAll exchanges between the open ocean and the Antarctic continental shelf must cross the Antarctic Slope Current (ASC). Previous studies indicate that these exchanges are strongly influenced by mesoscale and tidal ...