Download PDF by V. Balaji, René Redler, Reinhard Budich: Earth System Modelling - Volume 4: IO and Postprocessing

By V. Balaji, René Redler, Reinhard Budich

ISBN-10: 3642364632

ISBN-13: 9783642364631

ISBN-10: 3642364640

ISBN-13: 9783642364648

Collected articles during this sequence are devoted to the advance and use of software program for earth procedure modelling and goals at bridging the space among IT strategies and weather technology. the actual subject coated during this quantity addresses the problem of knowledge input/output and post-processing within the context of Earth approach modeling, with an emphasis on parallel I/O, garage administration and research subsystems for extraordinarily huge scale info requirements.

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Applications that exploit ptmp should usually use timestamps and checksums to avoid moving data unless the target is invalid or obsolete. • The archive resource is treated as remote storage. It may be associated with an offline medium requiring specialized fetch instructions. Usage of this resource other than for fetch or retrieve instructions is discouraged. A consequence of the three-level storage model is that it provides an elegant way to integrate a “data grid”, where the archive resource is a remote entity accessed across the Wide Area Network (WAN), using remote access protocols such as the Grid File Transfer Protocol (GridFTP) or the Open-source Project for a Network Data Access Protocol (OPenDAP).

It adds features to support very large datasets, and in some ways duplicates some file system features such as groups (directories), file mounts, etc. It provides support for variable length data, mappings of integers to Strings called enumerations, and user-defined types which can be reused by more than one variable. The price of all of this functionality is a very complex file format and an API with a steep learning curve. Surprisingly, neither HDF4 or HDF5 support shared dimensions, although they do have special variables called dimension scales which provide the same functionality as shared dimensions for the common 1-dimensional case.

CDO also provides many other utilities for analyzing climate model data. • Finally, there are packages that organize climate model data for international modeling campaigns. The key problem addressed here is to enforce adherence to common conventions and standards from multiple models from diverse institutions. The most prominent example of this is the Climate Model Output Rewriter (CMOR) package3 used to organize data for the Coupled Model Intercomparison Project. The success of CMOR in IPCC AR4 has to led to its adaptation for various other international modeling campaigns.

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Earth System Modelling - Volume 4: IO and Postprocessing by V. Balaji, René Redler, Reinhard Budich

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