NSIDC-0397 HDF4 Data Used to Assess Long-Term Access to Remote Sensing Data with Layout Maps Duerr, Ruth E., and Jonathan Crider HDF4 Data Used to Assess Long-Term Access to Remote Sensing Data with Layout Maps 2010-02-12 Boulder, Colorado USA NSIDC: National Snow and Ice Data Center http://nsidc.org/data/nsidc-0397.html Investigator Ruth Duerr rduerr@nsidc.org 1 303 735-0136 x

Cooperative Institute for Research in Environmental Sciences, CU Boulder

National Snow and Ice Data Center

449 University of Colorado at Boulder

Boulder Colorado 80027 USA Investigator Jonathan Crider Geoscientific Information environmental data geospatial data geotechnical data Hierarchical Data Format NASA NSIDC NSIDC DAAC NSIDC > National Snow and Ice Data Center AIRCRAFT SATELLITES complete English NSIDC_DAAC NSIDC_DAAC NASA DAAC at the National Snow and Ice Data Center http://nsidc.org/daac/index.html Data Center Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 1 303 492-2468

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA NSIDC National Snow and Ice Data Center http://nsidc.org Data Center Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 1 303 492-2468

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA FTP HDF Duerr, Ruth E., Peter Cao, Jonathan Crider, Mike Folk, Christopher Lynnes, and Mu Qun Yang. 2009. Ensuring Long-Term Access to Remotely-Sensed Data with Layout Maps. IEEE Transactions on Geoscience and Remote Sensing, 47(1): 123-219.

Notice to Data Users: The documentation for this data set was provided solely by the Principal Investigator(s) and was not further developed, thoroughly reviewed, or edited by NSIDC. Thus, support for this data set may be limited. This data set consists of a sampling of each type of Hierarchical Data Format version 4 (HDF4) data that are archived at the eight National Aeronautic and Space Administration (NASA) Earth Science Data Centers (ESDCs). The data were sampled for a collaborative study between The HDF Group, the Goddard Earth Sciences Data and Information Services Center (GES-DISC), and the National Snow and Ice Data Center (NSIDC) in order to assess the complex internal byte layout of HDF files. Based on the results of this assessment, methods for producing a map of the layout of the HDF4 files held by NASA were prototyped using a markup-language-based HDF tool. The resulting maps allow a separate program to read the file without recourse to the HDF application programming interface (API) (Duerr et al. 2009). Data products selected for the study, and a table summarizing the results, are available via FTP.

CEOS IDN DIF 9.7 2010-02-12 2012-03-28 Added publisher for EDB conversion.