Medspiration â System Requirements Document - Data User Element

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Medspiration MED-SOC-RS-001_1 System Requirements Document Issue F Page Table, fig. Reference ID Text from reference documents SR entry processing centre for all L4 data products. WP-ID4.5.1 Format L4 MMR_FR metadata record 94 WP4-087 A MMR_FR metadata record should be prepared for each L4 data file according to the specification provided in Appendix Out of scope A6.2. WP-ID4.5.2 Register L4 MMR_FR metadata record with MMR system 94 WP4-088 L4 MMR_FR metadata records should be delivered to the MMR system as soon as possible after the L4 data set has been Out of scope produced following the procedure described in Appendix A6.4. 94 WP4-089 WP-ID4.7 Extraction of L4 match up database file records (MDB_FR) NASR 94 WP4-090 L4* MDB_FR should be extracted according to the procedures described in WP-ID3. Out of scope 159 Appendix A5. GHRSST-PP High Resolution Diagnostic Data Set (HR-DDS) data granule data product format specification 159 AP5-001 The GHRSST-PP High-resolution Diagnostic Data Set (HR-DDS) system provides a distributed data resource and a NASR framework to analyse and inter-compare L2P and L4 data products in near real time, together with other data products including NWP analyses, operational ocean and atmospheric model outputs and in situ observations 159 AP5-002 In order to reduce the overhead of data storage and transport, the HR-DDS consists of about150 globally distributed 2º x NASR 2º latitude x longitude sites 159 AP5-003 Figure A5.1 shows a map of primary[1] HR-DDS sites (v2.3) for which all L2P and L4* data streams[2] will be extracted and archived as data granules. Each HR-DDS site is strategically positioned in order to address a particular issue; for implies CFI.DDS.0020 example, a particularly dynamic or “quiet” oceanographic or atmospheric region, location of additional in situ infrastructure, areas known to be influenced by atmospheric aerosol or persistent cloud cover and areas already having a significant scientific interest. Each site shown in Figure A5.1 is defined in Section A5.3. 159 AP5-004 The HR-DDS system provides a real time data resource the main learning tool for GHRSST-PP project scientists to NASR © 2004 SOC Page 172 of 193
Medspiration MED-SOC-RS-001_1 System Requirements Document Issue F Page Table, fig. Reference ID Text from reference documents SR entry develop and refine the GDS, to investigate differences between complementary data streams, to investigate regional and time variant bias statistics, to monitor the quality of input and output data streams and as a core component of the GHRSST-PP reanalysis (RAN) project 159 AP5-005 The HR-DDS constitutes the virtual laboratory of the GHRSST-PP allowing, for example, a full implementation of NASR Integrated Global Observing Strategy (IGOS) measurement principles (see http://www.igospartners.org/). 159 AP5-006 This Appendix provides a summary overview of the GHRSST-PP HR-DDS system. A complete Scientific and technical NASR description of the HR-DDS system can be found in GHRSST/13 available at http://www.ghgrsst-pp.org A5.1 Summary of the HR-DDS system configuration and operation 159 AP5-007 HR-DDS granules are produced by RDAC and GDAC centres in real time as netCDF data files according to the DDS.0120 specifications provided in Appendix A1 159 AP5-008 HR-DDS granules are archived locally together with a corresponding HR-DDS metadata record DDS.0110 159 AP5-009 HR-DDS metadata records are produced according to the specifications described in Appendix A6 and are identical to format other GDS metadata records 159 AP5-010 HR-DDS archive centres are referred to as HR-DDS nodes and in general, HR-DDS nodes should be part of RDAC and DDS.0110 GDAC 160 AP5-011 Figure A5.2 provides a schematic diagram of the GHRSST-PP HR-DDS data system which is based on a number of NASR distributed HR-DDS nodes that are interconnected using the Distributed Oceanographic Data System (DODS, see http://www.dods.org). 160 AP5-012 The DODS architecture uses a client/server model and the http protocol to provide a framework that simplifies . . . . . . NASR 160 AP5-013 In addition to local data access via DODS/OPeNDAP servers at each HR-DDS node, HR-DDS nodal data archives are NASR virtually combined as a single data archive by a HR-DDS virtual server. The HR-DDS virtual server uses GHRSST-PP Master Metadata Repository (MMR) HR-DDS metadata records to catalogue HR-DDS data granules archived at all © 2004 SOC Page 173 of 193
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Medspiration â System Requirements Document - Data User Element