Ibrahim Hoteit

Enhancing ensemble data assimilation into one-way-coupled models with one-step-ahead smoothing

This study investigates the filtering problem with one-way coupled (OWC) state-space systems, for which the joint ensemble Kalman filter (EnKF) is the standard solution. In this …

naila-f.-raboudi

SKRIPS v1.0: a regional coupled ocean-atmosphere modeling framework (MITgcm-WRF) using ESMF/NUOPC, description and preliminary results for the Red Sea

A new regional coupled ocean-atmosphere model is developed and its implementation is presented in this paper. The coupled model is based on two open-source community model …

rui-sun

Ocean Observations to Improve Our Understanding, Modeling, and Forecasting of Subseasonal-to-Seasonal Variability

Subseasonal-to-seasonal (S2S) forecasts have the potential to provide advance information about weather and climate events. The high heat capacity of water means that the …

aneesh-c.-subramanian

Observational Needs for Improving Ocean and Coupled Reanalysis, S2S Prediction, and Decadal Prediction

Developments in observing system technologies and ocean data assimilation (DA) are symbiotic. New observation types lead to new DA methods and new DA methods, such as coupled …

stephen-g.-penny

Sensitivity Studies of the Red Sea Eddies Using Adjoint Method

Adjoint sensitivity analysis is applied to a set of eddies in the Red Sea using a high‐resolution Massachusetts Institute of Technology general circulation model and its adjoint …

peng-zhan

Sensitivity Studies of the Red Sea Eddies Using Adjoint Method

Adjoint sensitivity analysis is applied to a set of eddies in the Red Sea using a high-resolution Massachusetts Institute of Technology general circulation model and its adjoint …

peng-zhan

The eddy kinetic energy budget in the Red Sea

The budget of eddy kinetic energy (EKE) in the Red Sea, including the sources, redistributions, and sink, is examined using a high'resolution eddy‐resolving ocean circulation …

peng-zhan

Eddies in the Red Sea: A statistical and dynamical study

Sea level anomaly (SLA) data spanning 1992–2012 were analyzed to study the statistical properties of eddies in the Red Sea. An algorithm that identifies winding angles was employed …

peng-zhan

An Adjoint-Based Adaptive Ensemble Kalman Filter

A new hybrid ensemble Kalman filter/four-dimensional variational data assimilation (EnKF/4D-VAR) approach is introduced to mitigate background covariance limitations in the EnKF. …

hajoon-song

Linear versus Nonlinear Filtering with Scale-Selective Corrections for Balanced Dynamics in a Simple Atmospheric Model

This paper investigates the role of the linear analysis step of the ensemble Kalman filters (EnKF) in disrupting the balanced dynamics in a simple atmospheric model and compares it …

aneesh-c.-subramanian