CRISM DATA SIS - cpshooter/geoML GitHub Wiki

There are ten CRISM data products defined in this SIS document. These include:

  1. Experiment Data Record (EDR) consisting of raw, uncalibrated CRISM spectra;
  2. Derived Data Record (DDR) containing pointing and other ancillary information for observations pointed at Mars’ surface;
  3. Limb Data Record (LDR) containing pointing and other ancillary information for observations pointed at Mars’ limb;
  4. Targeted Reduced Data Record (TRDR), which is a radiometrically calibrated EDR;
  5. two types of Calibration Data Records (CDRs), which are files used to generate radiance or radiance/solar irradiance (I/F) values in a TRDR from an EDR;
  6. Ancillary Data Records (ADRs), which are files used to correct I/F values for atmospheric, photometric, or thermal effects, and which document the data set
  7. Map-Projected Multispectral Reduced Data Record (MRDR);
  8. Map-Projected Targeted Reduced Data Record (MTRDR); and
  9. browse products for EDRs, MTRDRs, and MRDRs.

CRISM Objectives:

  1. Find new targets of interest: aqueous deposits, crustal composition
  2. Separate the surface and atmosphere Provide information on spatial/seasonal variations in aerosols, H2O, CO2, and ices
  3. Measure surface targets with high spatial and spectral resolutions and high signal-to-noise ratio (SNR)

Modes of CRISM observations:

  • Targeted (hyperspectral): Tracking as shown, once per target
  • Atmospheric (hyperspectral): Tracking as shown but only center of target measured / Nadir-pointed / Limb scans
  • Mapping (selected wavelengths): Nadir-pointed
  • Radiometric Calibration
  • Bias Calibration
  • Flat-Field Calibration
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