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@INPROCEEDINGS{Hinz:1047551,
      author       = {Hinz, Carsten and Peters-von Gehlen, Karsten and Rao
                      Modali, Kameswar and Saini, Rajveer and Schultz, Martin},
      title        = {{S}toring, {F}inding and {A}ccessing {E}arth {S}ystem
                      {M}odeling {D}ata: {I}nsights and {C}hallenges from
                      {W}arm{W}orld-{E}asier},
      reportid     = {FZJ-2025-04377},
      year         = {2025},
      note         = {File only for internal use.},
      abstract     = {Improvements in computational speed lead to better
                      resolutions in Earth System Models (ESM) allowing them to
                      resolve scales of a few kilometers. The volume of the
                      resulting data greatly increases with the improvements in
                      resolution and introduces a challenge to processing and
                      storing these results. While modern HPC systems provide
                      petabyte-scale capacity for file storage, analyzing such
                      data on local user systems can become a prohibitive
                      bottleneck. Beyond the sheer demands on processing
                      high-volume ESM data, there is also increasing demand to
                      make them FAIR and in particular findable. The goal of the
                      “Easier” module of the Warmworld project aims to
                      simplify the access to ESM data from different HPC centers,
                      in particular the German Climate Computing Center (DKRZ) and
                      the Jülich Supercomputing Centre (JSC). One aspect is the
                      creation of a joint catalog following the SpatioTemporal
                      Asset Catalogs (STAC) specification. This enhances the
                      findability for data available at both centers. The
                      accessibility is provided by links in the catalog to access
                      the data, either directly on disk, as a download or, as a
                      mid term goal, through streaming of data on demand with zarr
                      over http. The explicit implementation of the required
                      REST-APIs depends on the infrastructure, hardware and
                      software, of the data centers as well as the organization of
                      the stored data. As the first data backend at JSC, we set up
                      a Fields DataBase (FDB), developed by European Centre for
                      Medium-Range Weather Forecasts (ECMWF), to store the ESM
                      results as multi-dimensional data cubes. For data retrieval,
                      we provide a download service. Data are identified within
                      the FDB by their metadata according to the Meteorological
                      Archival and Retrieval System (MARS), developed by ECMWF.
                      The automated access to HPC system is achived with the
                      UNiform Interface to COmputing REsources (UNICORE). The
                      download service integrates HelmholtzID, the Helmholtz
                      authentication and authorization infrastructure. This will
                      allow a large number of institutions to access these
                      services with the possibility to control access and resource
                      use. ƒOur poster will illustrate the combination of these
                      various tools and services for creating the envisoned
                      services for the infrastructure at JSC as well as our
                      federated STAC catalog. We wish to close our presentation
                      with an overview on further challenges related to ESM data
                      addressing aspects of data management and data access.},
      month         = {Oct},
      date          = {2025-10-07},
      organization  = {Semester of Algorithmic Earth System
                       Sciences: Kick-off and networking
                       event, Köln (Germany), 7 Oct 2025 - 10
                       Oct 2025},
      subtyp        = {After Call},
      cin          = {JSC},
      cid          = {I:(DE-Juel1)JSC-20090406},
      pnm          = {5111 - Domain-Specific Simulation $\&$ Data Life Cycle Labs
                      (SDLs) and Research Groups (POF4-511) / 5112 - Cross-Domain
                      Algorithms, Tools, Methods Labs (ATMLs) and Research Groups
                      (POF4-511) / Earth System Data Exploration (ESDE) / BMBF
                      01LK2204D - WarmWorld Modul 3 "Easier" (BMBF-01LK2204D)},
      pid          = {G:(DE-HGF)POF4-5111 / G:(DE-HGF)POF4-5112 /
                      G:(DE-Juel-1)ESDE / G:(DE-Juel1)BMBF-01LK2204D},
      typ          = {PUB:(DE-HGF)24},
      url          = {https://juser.fz-juelich.de/record/1047551},
}