GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Online Resource
    Online Resource
    Berlin, Heidelberg :Springer Berlin / Heidelberg,
    Keywords: Dynamic climatology -- Mathematical models. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (97 pages)
    Edition: 1st ed.
    ISBN: 9783642372445
    Series Statement: SpringerBriefs in Earth System Sciences Series
    DDC: 550
    Language: English
    Note: Intro -- Preface -- Contents -- Contributors -- 1 ESM Data Archives in Times of the Grid -- Reference -- 2 Distributed Archives, Databases and Data Portals: The Scene -- References -- 3 Harvesting of Metadata with Open Access Tools -- 3.1 Background and Motivation -- 3.2 The Metadata Portal Framework ``panFMP'' -- 3.3 Adoption of the Framework in C3Grid -- 3.4 Conclusion -- References -- 4 Data Discovery: Identifying, Searching and Finding Data -- 4.1 Overview and Definition of Terminology -- 4.2 ESM Data Discovery Challenges -- 4.2.1 Data Product Granularity and Aggregation -- 4.2.2 Data Provenance and Scientific Context -- 4.2.3 Data Lifetime and Quality -- 4.2.4 Data Volume and Data Distribution -- 4.2.5 Interdisciplinarity and Heterogeneity of Data Discovery Use Cases -- 4.2.6 Search Scalability and Flexibility -- 4.3 Generic Data Discovery Architecture -- 4.4 Implementation Standards -- 4.4.1 Metadata Standards and Initiative: -- 4.4.2 Metadata Exchange and Discovery Protocol Standard -- 4.4.3 Standardization of Registries -- 4.5 Data Discovery Architectures in the Times of the Grid -- 4.5.1 NERC Data Grid -- 4.5.2 C3Grid -- 4.5.3 Earth System Grid (ESG) -- 4.5.4 The European Distributed ESM Data Archive -- 4.6 Summary -- References -- 5 User Driven Data Access Mechanisms -- 5.1 Existing Data Access Solutions in ESM -- 5.2 Technical Solutions for Data Access -- 5.3 Aspects of Local Implementations -- 5.4 Future Developments -- 5.5 Conclusions -- References -- 6 Collaborative Climate Community Data and Processing Grid---C3Grid: Workflows for Data Selection, Pre- and Post-Processing in a Distributed Environment -- 6.1 General Remarks -- 6.2 Architecture and Middleware Components -- 6.2.1 C3Grid Portal -- 6.2.2 Data Information Service and Metadata -- 6.2.3 Collaborative Workspace and Data Management Service. , 6.2.4 Workflow Scheduling Service -- 6.2.5 Provider Layer: Data Archive and Compute Resources -- 6.3 Workflows -- 6.4 Status and Perspectives -- References -- 7 Earth System Grid Federation: Federated and Integrated Climate Data from Multiple Sources -- 7.1 Background -- 7.2 Science Drivers -- 7.2.1 Typical ESGF Facility: PCMDI LLNL -- 7.2.2 Enhancing the Process of Science -- 7.3 Data Quality and Publishing in an International Setting -- 7.4 Data Intensive Climate Science -- 7.5 Data, Workflow, Middleware Tools, and Services -- 7.6 Outstanding Issues -- 7.7 Summary -- 8 Future Perspectives -- Glossary -- Index.
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    Publication Date: 2014-06-18
    Description: Journal of Medicinal Chemistry DOI: 10.1021/jm4019492
    Topics: Chemistry and Pharmacology
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    Publication Date: 2019-07-16
    Description: In this article, the tsunami model TsunAWI (Alfred Wegener Institute) and its application for hindcasts, inundation studies, and the operation of the tsunami scenario repository for the Indonesian tsunami early warning system are presented. TsunAWI was developed in the framework of the German-Indonesian Tsunami Early Warning System (GITEWS) and simulates all stages of a tsunami from the origin and the propagation in the ocean to the arrival at the coast and the inundation on land. It solves the non-linear shallow water equations on an unstructured finite element grid that allows to change the resolution seamlessly between a coarse grid in the deep ocean and a fine representation of coastal structures. During the GITEWS project and the following maintenance phase, TsunAWI and a framework of pre- and postprocessing routines was developed step by step to provide fast computation of enhanced model physics and to deliver high quality results.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    Publication Date: 2014-05-10
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    facet.materialart.
    Unknown
    INTECH
    In:  EPIC3Wave Propagation Theories and Applications, Tsunami Wave Propagation, Croatia, INTECH, 380 p., pp. 43-72, ISBN: 978-953-51-0979-2
    Publication Date: 2014-04-15
    Repository Name: EPIC Alfred Wegener Institut
    Type: Inbook , peerRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    facet.materialart.
    Unknown
    In:  EPIC3IMUM 2011 - The 10th International Workshop on Multiscale (Un-)structured Mesh Numerical Modelling for Coastal, Shelf and Global Ocean Dynamics, AWI, BremerhavenAugust 2011., 22
    Publication Date: 2019-07-16
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    facet.materialart.
    Unknown
    In:  EPIC32010 Ocean Sciences Meeting, Portland, Oregon, February 20-26, 2010 p.
    Publication Date: 2019-07-16
    Description: Data assimilation applications with high-dimensional numerical modelsshow extreme requirements on computational resources. Thus, goodscalability of the assimilation system is necessary to make theseapplications feasible. Sequential data assimilation methods based onensemble forecasts, like ensemble-based Kalman filters, provide suchgood scalability, because the forecast of each ensemble member can beperformed independently. However, this parallelism has to be combinedwith the parallelization of both the numerical model and the data assimilation algorithm. In order to simplify the implementation ofscalable data assimilation systems based on existing numerical models,the Parallel Data Assimilation Framework PDAF has been developed. Itprovides support for parallel ensemble forecasts and parallelnumerical models. Further, it includes several optimized parallel filteralgorithms, like the ensemble transform Kalman filter. We will discussthe features and scalability of data assimilation systems based onPDAF on the example of data assimilation with the finite element oceanmodel FEOM.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    facet.materialart.
    Unknown
    In:  EPIC3Quarterly Journal of the Royal Meteorological Society, 138, pp. 802-812
    Publication Date: 2019-07-16
    Description: Localization is an essential element of ensemble-based Kalman filters in large-scale systems. Two localization methods are commonly used: Covariance localization and domain localization. The former applies a localizing weight to the forecast covariance matrix while the latter splits the assimilation into local regions in which independent assimilation updates are performed.The domain localization is usually combined with a weighting of the observation error covariance matrix, resulting in a similar localization effect to that of covariance localized filters. In order to improve the performance of domain localization with weighting of the observation errors, a regulated localization scheme is introduced. Twin experiments with the Lorenz-96 model demonstrate that the regulated localization can lead to a significant reduction of the estimation errors as well as increased stability of the assimilation process. In addition, the numerical experiments point out that the combination of covariance localization with a serial processing of observations during the analysis step can destabilize the assimilation process.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    facet.materialart.
    Unknown
    In:  EPIC3Monthly Weather Review, 140, pp. 2335-2345
    Publication Date: 2019-07-16
    Description: In recent years, several ensemble-based Kalman filter algorithms have been developed that have been classified as ensemble square-root Kalman filters. Parallel to this development, the SEIK (Singular ``Evolutive'' Interpolated Kalman) filter has been introduced and applied in several studies. Some publications note that the SEIK filter is an ensemble Kalman filter or even an ensemble square-root Kalman filter. This study examines the relation of the SEIK filter to ensemble square-root filters in detail. It shows that the SEIK filter is indeed an ensemble-square root Kalman filter. Furthermore, a variant of the SEIK filter, the Error Subspace Transform Kalman Filter (ESTKF), is presented that results in identical ensemble transformations to those of the Ensemble Transform Kalman Filter (ETKF) while having a slightly lower computational cost. Numerical experiments are conducted to compare the performance of three filters (SEIK, ETKF, and ESTKF) using deterministic and random ensemble transformations. The results show better performance for the ETKF and ESTKF methods over the SEIK filter as long as this filter is not applied with a symmetric square root. The findings unify the separate developments that have been performed for the SEIK filter and the other ensemble square-root Kalman filters.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    facet.materialart.
    Unknown
    In:  EPIC3EGU General Assembly, April 4 - 8, 2011, Vienna, Austria (Geophysical Research Abstracts, Vol. 13, EGU2011-3338., 2011
    Publication Date: 2019-07-16
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...