Entwicklung der Fehlerschätzungsmodelle für Datensimulation für allgemeine Ozean-Zirkulationsmodelle
The 4D-variational data assimilation procedure (4D-var DA) is a special routine used for correction of climate/weather forecasts by tuning the climate model parameters in a way that provides the best possible fit to the available observational data. Due to a number of reasons DA introduces its own inevitable methodological error which ultimately affects the accuracy of the model forecast. The existing methods designed for the reduction of this uncertainty require a lot of computational resources. This is the reason why their usage in many climate models is restricted by some simplified versions. This project is aimed on developing a conceptually novel, robust, and efficient nonlinear variational error estimation algorithm (NOVEEA) which can estimate the inaccuracy of the DA methods and can make the corresponding corrections quite efficient computationally. The advantage of the proposed method is that the computational algorithm is based on a abstract mathematical 4D-var DA problem which allows using it in a wider geophysical context.
Institution
Mathematics, Informatics and Natural Sciences
Department
Geowissenschaften
Researcher
Dr. Andrey Vlasenko
Contact
E-Mail: andrey.vlasenko"AT"uni-hamburg.de
Project duration
seit 2015
Funded by
DFG
Other projects
- Meeresspiegeländerungen und Sturmklima des letzten Jahrtausends (südliche Nordsee; SEASTORM) (Prof. Dr. Christian Betzler, Prof. Dr. Gerhard Schmiedl, Dr. Sebastian Lindhorst)
- Integration morphologischer und ökologischer Prozesse zum Verständnis und zur Vorhersage der Entwicklung von Salzmarschen (Dr. Stefanie Nolte)
- Koralline Algen als neues Archiv zur Entschlüsselung vergangener Meereisbedeckung und Wassertemperaturdynamik (Dr. Steffen Hetzinger)
- Mikrobiologische Untersuchungen INDEX2016 (Prof. Dr. Mirjam Perner)
- Environmental Protection during Armed Conflict (Anne Dienelt)
- Fisheries access and international law (Valentin Schatz)
- Conservation of Marine Living Resources in the Polar Regions (Alexander Proelß, Valentin Schatz)
- International Law Plus (Sommerschule) zu "International Enrionmental Law" (Prof. Dr. Markus Kotzur, Verena Kahl und Studierende in Form eines Austauschprogramms mit Australien)
- Anpassung der Algorithmik und Implementierung zur Performancesteigerung des Erdsystemmodels des Max-Planck-Instituts für Meteorologie (Paleo Modelling Projekt 4.4) (Prof. Dr. Jörn Behrens)
- Verbesserung der Kopplungsstrategien, Teilprojekt 1: Erforschung fortschrittlicher Kopplungstechniken (Paleo Modelling Projekt 4.2) (Prof. Dr. Jörn Behrens)
- Modellierungen der globalen Verwitterungsflüsse (Prof. Dr. Jens Hartmann)
- Workshop: What do we know about multicentennial, multimillenial variability? (Dr. Christian Franzke)
- Coordinated Research in Earth Systems and Climate: Experiments, kNowledge, Dissemination and Outreach (CRESCENDO) (Prof. Dr. Valerio Lucarini)
- Statistische Mechanik des Wetters und des Klimas: Instabilitäten, Vorhersagbarkeit und Antwort – MERCI (Prof. Dr. Valerio Lucarini, Dr. Richard Blender, Dr. Christian Franzke)
- CAHOL – Holozäne Klimaschwankungen in Zentralasien (Dr. Birgit Gaye)
- FIDelity and Uncertainty in Climate data records from Earth Observations (Prof. Dr. Stefan Bühler)
- Using satellites to observe and validate the macro- and microphysics of convective ice clouds and their life cycle (Prof. Dr. Stefan Bühler)
- Understanding clouds and precipitation at the sub-kilometer scale using HAMP (Prof. Dr. Stefan Bühler)
- Meteorologische Charakterisierung von Antrieb und städtischer Modifikation für die Beurteilung von Klimamodellen (Prof. Dr. Felix Ament, Prof. Dr. Bernd Leitl, Dr. Sarah Wiesner, Kerstin Schäfer)
- Setting a working example for integrating lemur conservation into long-term development projects by restoring natural lemur habitat associated with economic forest plantations in the DIANA region (Jörg Ganzhorn, Michael Köhl)
- Generationengerechtigkeit und optimale Klimapolitik (Prof. Dr. Moritz Drupp)
- Human Rights of Future Generations (Ammar Bustami)
- Simulationspatienten in der medizinischen Ausbildung am UKE (SIMPAT) (Prof. Dr. med. Martin Scherer)
Center for a Sustainable University
Mittelweg 177
20148 Hamburg
www.nachhaltige.uni-hamburg.de