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Finite Difference of Adjoint or Adjoint of Finite Difference?
Publisher: American Meteorological Society
Abstract: Adjoint models are used for atmospheric and oceanic sensitivity studies in order to efficiently evaluate the sensitivity of a cost function (e.g., the temperature or pressure at some target time tf, averaged over some ...
Identifying a Damped Oscillatory Thermohaline Mode in a General Circulation Model Using an Adjoint Model
Publisher: American Meteorological Society
Abstract: A damped oscillatory mode of the thermohaline circulation (THC), which may play a role in interdecadal climate variability, is identified in a global primitive equation model. This analysis is done under mixed boundary ...
A Comparison of Gulf Stream Sea Surface Height Fields Derived from Geosat Altimeter Data and Those Derived from Sea Surface Temperature Data
Publisher: American Meteorological Society
Abstract: Two types of satellite data, Geosat altimeter data and sea surface temperature data (SST), are compared and evaluated for their usefulness in assimilation into a numerical model of the Gulf Stream region. Synoptic sea ...
A Study of ENSO Prediction Using a Hybrid Coupled Model and the Adjoint Method for Data Assimilation
Publisher: American Meteorological Society
Abstract: An experimental ENSO prediction system is presented, based on an ocean general circulation model (GCM) coupled to a statistical atmosphere and the adjoint method of 4D variational data assimilation. The adjoint method is ...
The Equatorial Thermocline Outcropping—A Seasonal Control on the Tropical Pacific Ocean–Atmosphere Instability Strength
Publisher: American Meteorological Society
Abstract: One of the major factors determining the strength and extent of ENSO events is the instability state of the equatorial Pacific coupled ocean?atmosphere system and its seasonal variations. This study analyzes the coupled ...