Using flow geometry for drifter deployment in Lagrangian data assimilation

H Salman, K Ide, CKRT Jones - Tellus A: Dynamic Meteorology …, 2008 - Taylor & Francis
… for optimal drifter deployments. In this work, we investigate a directed drifter deployment
strategy … We test our directed drifter deployment strategy by targeting Lagrangian coherent flow …

[HTML][HTML] Impacts of the Lagrangian data assimilation of surface drifters on estimating ocean circulation during the Gulf of Mexico grand Lagrangian deployment

L Sun, SG Penny, M Harrison - Monthly Weather Review, 2022 - journals.ametsoc.org
… However, the position data from these instruments are typically not … ocean data assimilation
(DA) systems. In this work, the impact of an augmented-state Lagrangian data assimilation (…

Lagrangian data in a high-resolution numerical simulation of the North Atlantic: I. Comparison with in situ drifter data

ZD Garraffo, AJ Mariano, A Griffa, C Veneziani… - Journal of Marine …, 2001 - Elsevier
… First, as mentioned in Section 4, in situ drifters were primarily deployed north of the wall.
This might cause biases in the estimates of Gulf Stream position and energetics, but very …

[HTML][HTML] Lagrangian data assimilation of surface drifters in a double-gyre ocean model using the local ensemble transform Kalman filter

L Sun, SG Penny - Monthly Weather Review, 2019 - journals.ametsoc.org
drifter states x D ⁡ [ l ] f associated to a forecasting drifter ID n. The center white triangle is
located at the forecast ensemble mean position of drifterdrifter locations. Those observation …

Data assimilation considerations for improved ocean predictability during the Gulf of Mexico Grand Lagrangian Deployment (GLAD)

GA Jacobs, BP Bartels, DJ Bogucki, FJ Beron-Vera… - Ocean Modelling, 2014 - Elsevier
… evaluate several key assumptions of the ocean data assimilation methodology by utilizing
the rich drifter data set of the Grand Lagrangian Deployment (GLAD). The Consortium for …

Directed drifter launch strategies for Lagrangian data assimilation using hyperbolic trajectories

A Molcard, AC Poje, TM Özgökmen - Ocean Modelling, 2006 - Elsevier
… Given this Lagrangian assimilation scheme, we focus on a basic question for operational
scenarios: Considering the expense of deploying observational drifter arrays, can initial drifter

[HTML][HTML] Do assimilated drifter velocities improve Lagrangian predictability in an operational ocean model?

P Muscarella, MJ Carrier, H Ngodock… - Monthly Weather …, 2015 - journals.ametsoc.org
data streams to constrain small-scale dynamical features. Here velocity observations from
Lagrangian drifters deployed in … Unfortunately, while numerical models and data assimilation

Assimilation of drifter observations for the reconstruction of the Eulerian circulation field

A Molcard, LI Piterbarg, A Griffa… - Journal of …, 2003 - Wiley Online Library
… [2] In the last decade, deployment of drifting buoys … data voids occurring during the drifter
history. The comprehensive investigation of optimal sampling for Lagrangian data assimilation

Prediction of particle trajectories in the Adriatic Sea using Lagrangian data assimilation

S Castellari, A Griffa, TM Özgökmen… - Journal of Marine Systems, 2001 - Elsevier
… The rms prediction errors S for drifters in cluster A using Lagrangian data assimilation with …
In the future, we intend to investigate the problem of optimal sampling for cluster deployments, …

Variational L agrangian data assimilation in open channel networks

Q Wu, A Tinka, K Weekly, J Beard… - Water Resources …, 2015 - Wiley Online Library
… from both Lagrangian drifters and Eulerian flow sensors were … summarizes our drifter
measurements and data assimilation. … restrictions, our drifters could only be deployed in one …