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MRO: CRISM
CRISM is the Compact Reconnaissance Imaging
Spectrometer for Mars, a visible-infrared hyperspectral
mapper that maps the geology, composition, and layering
of surface features on Mars. CRISM data sets are produced by
the CRISM Science Team at Johns Hopkins University
Applied Physics Laboratory, Laurel, Maryland.
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May 31, 2013. CRISM EDR, CDR,
DDR, and TRDR data for Release 25 are now online,
covering the period September 14 through November 8,
2012. There are no CRISM data for August 9 through
September 13 because MRO was supporting the MSL landing.
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CRISM Data Sets
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Derived Data Products |
TRDR - Targeted Reduced Data Records
contain data calibrated to radiance or I/F.
Version 3 (current version, see below for details):
| TRDR v3 Volume |
Coverage |
|
MROCR_2101 |
Sept. 27, 2006 - Aug. 7,
2007 |
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MROCR_2102 |
Aug. 11, 2007 - Aug. 8,
2008 |
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MROCR_2103 |
Aug. 9, 2008 - Aug. 6,
2009 |
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MROCR_2104 |
Aug. 11, 2009 - Aug. 8,
2010 |
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MROCR_2105 |
Aug. 9, 2010 - Aug. 8,
2011 |
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MROCR_2106 |
Aug. 11, 2011 - Aug. 3,
2012 |
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MROCR_2107 |
Sept. 14, 2012 - Nov. 8,
2012 |
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DDR - Derived
Data Records contain information on observation
conditions and surface physical properties.
| DDR Volume |
Coverage |
|
MROCR_1001 |
Sept. 27, 2006 - Aug. 8,
2008 |
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MROCR_1002 |
Aug. 9, 2008 - Aug. 8,
2010 |
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MROCR_1003 |
Aug. 9, 2010 - Aug. 8,
2011 |
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MROCR_1004 |
Aug. 11, 2011 - Aug. 3,
2012 |
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MROCR_1005 |
Sept. 14, 2012 - Nov. 8,
2012 |
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LDR - Limb Data Records are similar to DDRs. They
contain supplementary information for TRDR limb
observations.
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MRDR - Multispectral Reduced Data Records
contain multispectral survey data calibrated,
mosaicked, and map projected.
MRDR IF and DE
data types have been reprocessed using Version 3 of
the radiometric calibration software:
Old Version 2 data will be retained until all
MRDR data have been reprocessed:
Coverage map of MRDR I/F tiles
Coverage map of MRDR Lambert albedo and summary product tiles
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ADR - Ancillary
Data Records (to be produced later and included in
TRDR archive)
MTRDR -
Multispectral Targeted Reduced Data Records (to be
produced later)
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Special Products |
The CRISM
Spectral Library,
a collection of Mars-analog laboratory spectra
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|
Raw Data Products |
EDR - Experiment Data Records and
CDR - Calibration Data Records
| EDR / CDR Volume |
Coverage |
|
MROCR_0001 |
Sept. 27, 2006 - Dec.
31, 2007* |
|
MROCR_0002 |
Jan. 1, 2008 - Aug. 8,
2008* |
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MROCR_0003 |
Aug. 9, 2008 - Aug. 8,
2010* |
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MROCR_0004 |
Aug. 9, 2010 - Aug. 8,
2011 |
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MROCR_0005 |
Aug. 11, 2011 - Aug. 3,
2012 |
|
MROCR_0006 |
Sept. 14, 2012 - Nov. 8,
2012 |
*Note: CDRs in this
range have been reprocessed using version 3
software. See Note Regarding TRDR
Version 3 Reprocessing below.
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Read the
CRISM Data Product Specification
(PDF, 9 MB) for information about the structure and content of CRISM
data products. This is essential reading for
any CRISM user. Additional help in
processing and using CRISM data is available in the
presentations from the
MRO CRISM Data Users' Workshop.
Read the
CRISM
Data Set Specification (PDF, 1.5 MB) for information
about the organization of CRISM data sets. There is more than just the data products!
Visit the CRISM
Team Web
Site at APL for the latest news about CRISM.
Note Regarding TRDR Version 3
Reprocessing
As of February 9, 2010,
the
TRDRs (Targeted Reduced Data
Records) are being created with version 3 of the CRISM processing
software, which includes improved calibration
procedures. Compared to version 2 TRDRs, these
products have had most artifacts corrected and
noise reduced by use of a sophisticated filtering
process. The CRISM Team
has revised all previously released TRDRs using the
improved software. For more information see the
revised Data Set Description (trdr_ds.cat) and
Software Interface Specification (crism_dpsis.pdf).
The previously released TRDR
version 2 products have been taken offline.
CDRs (Calibration Data Records)
have also been reprocessed as part of this
effort. The Version 3 CDRs are stored on the EDR volumes in their usual
CDR directory, and the Version 2 CDRs that they
replace have been taken
offline.
Users of TRDR Version 3 products please note: The
hyperspectral noise filter applied to the I/F version
of CRISM TRDRs in version 3 of the radiometric
calibration pipeline is described in
this file (PDF,
13.3 MB). The format of the file is a
flowchart describing different steps in the filtering
process, which is applied to full or half resolution
targeted observations (the central swaths of FRT, HRL,
or HRS observations). Other products taken with
greater levels of pixel binning are not filtered at
this time. A future version of the CRISM Data Products
SIS will describe the filtering algorithm in greater
detail.
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