Mars Reconnaissance Orbiter CRISM MTRDR Bundle

This bundle contains map-projected targeted reduced data record (MTRDR) data 
acquired by the Mars Reconnaissance Orbiter (MRO) Compact Reconnaissance 
Imaging Spectrometer for Mars (CRISM).

The bundle contains the following collections:

- Two data collections located in the data_mtrdr and data_browse directories.
- Two document collections located in the catalog and document directories.
  The PDS3 catalog files are located in the catalog directory and the 
  dataset documentation files are located in the document directory.
- One miscellaneous collection for the PDS3 index files located in the index
  directory.

Each product in this bundle is described by a PDS4 label in a separate file
with the same name as the file described by the label but with the extension
XML. PDS4 labels are XML (eXtended Markup Language) files that conform to the
PDS4 Information Model XML schema at
https://pds.nasa.gov/pds4/schema/released/. The PDS4 labels are best viewed
in an XML-aware text editor, and may be used by software that can manipulate
XML documents.

Note that the PDS4 labels and other PDS4 products are merged with the PDS3
volume such that all the PDS3 files and directories are preserved. Thus,
users who want access to the PDS3 labels can continue to use them. All data
products have been given PDS4 labels. Some PDS3 files remain but are not
considered part of the PDS4 bundle, e.g. aareadme.txt, errata.txt,
and voldesc.cat files in the root directory of this bundle. The aareadme.txt
file describes the structure of the original PDS3 dataset. The errata.txt
file lists any comments or errors relative to the PDS3 standards. The 
voldesc.cat file is a PDS3 catalog file for the volume. The files in the 
extras directory are also not considered part of the PDS4 bundle at this 
time, but they may be converted at a later date. 

This bundle was created and archived by the Geosciences Node of the Planetary
Data System. Questions about this bundle may be directed to
geosci@wunder.wustl.edu.