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Intercomparisons of 4D-Variational Assimilation and the Ensemble Kalman Filter

Description:

Driven largely by interest in weather prediction and ocean monitoring, methods for performing geophysical data analysis and assimilation have developed rapidly since the middle of the last century. By the early 1990's, a general consensus had developed in the data assimilation community in favor of variational methods and, in particular, the 4D-variational approach (4D-Var). More recently there has been much interest in an alternative approach, the ensemble Kalman filter (EnKF), inspired by the Kalman filter. In November 2008, an international workshop was held in Buenos Aires to consider the two methods, intercompare them both theoretically and in various practical contexts, and hopefully lead to a better understanding of the potential of both methods. There was special emphasis on atmospheric data assimilation with the aim of providing a solid scientific basis for supporting practical decisions eventually to be taken by meteorological agencies. The papers in this special collection are based on the presentations at the workshop, and are listed below as they are published. Click here to view the full preface for this special collection.

The workshop website can be accessed here: http://4dvarenkf.cima.fcen.uba.ar/

Collection editor:
Dr. Herschel Mitchell

Special Collection Image
Shu-Chih Yang; Eugenia Kalnay; Brian Hunt
Monthly Weather Review
Monika Krysta; Eric Blayo; Emmanuel Cosme; Jacques Verron
Monthly Weather Review
Zhiyong Meng; Fuqing Zhang
Monthly Weather Review
Tijana Janjić; Lars Nerger; Alberta Albertella; Jens Schröter; Sergey Skachko
Monthly Weather Review
Takuya Kawabata; Tohru Kuroda; Hiromu Seko; Kazuo Saito
Monthly Weather Review
José A. Aravéquia; Istvan Szunyogh; Elana J. Fertig; Eugenia Kalnay; David Kuhl; Eric J. Kostelich
Monthly Weather Review
Chiara Piccolo
Monthly Weather Review
Craig H. Bishop; Daniel Hodyss
Monthly Weather Review
Steven J. Greybush; Eugenia Kalnay; Takemasa Miyoshi; Kayo Ide; Brian R. Hunt
Monthly Weather Review
Craig H. Bishop; Daniel Hodyss; Peter Steinle; Holly Sims; Adam M. Clayton; Andrew C. Lorenc; Dale M. Barker; Mark Buehner
Monthly Weather Review
Thomas M. Hamill; Jeffrey S. Whitaker
Monthly Weather Review
Mark Buehner; Ahmed Mahidjiba
Monthly Weather Review
Loïk Berre; Gérald Desroziers
Monthly Weather Review
Alberto Carrassi; Stéphane Vannitsem
Monthly Weather Review
Marc Bocquet; Carlos A. Pires; Lin Wu
Monthly Weather Review
Takemasa Miyoshi; Yoshiaki Sato; Takashi Kadowaki
Monthly Weather Review
Mark Buehner; P. L. Houtekamer; Cecilien Charette; Herschel L. Mitchell; Bin He
Monthly Weather Review
Mark Buehner; P. L. Houtekamer; Cecilien Charette; Herschel L. Mitchell; Bin He
Monthly Weather Review
Jean-François Caron; Luc Fillion
Monthly Weather Review
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