Planetary Science Institute

2003 Global MGS-TES Thermal Inertia Map

Supercedes the 2000 map
Superceded by the 2007 maps

PSI Thermal Inertia Web Site

This site contains a downloadable thermal inertia map derived from Mars Global Surveyor Thermal Emission Spectrometer observations of the surface temperatures of Mars taken over the entire primary mapping mission. See note below for proper referencing.

There are two maps: 1) thermal inertia map at 20 pixel-per-degree resolution, and 2) a correlated interpolation mask. The thermal inertia map is derived from TES thermal bolometer, nighttime temperature observations. Between 80 degrees south and 80 degrees north the map has been filled by interpolation. The interpolation mask identifies these interpolated pixels, in the event they are not wanted for your application. (ie: The thermal inertia map multiplied by the interpolation mask gives an uninterpolated map. The mask also provides a map of real data coverage.)

BINARY FILE
THERMAL INERTIA (50 MB)
INTERPOLATION MASK (25 MB)
JPG MAP IMAGE - LARGE
THERMAL INERTIA (2.3 MB)
INTERPOLATION MASK (1.6 MB)
JPG MAP IMAGE- SMALL
THERMAL INERTIA (257 KB)
INTERPOLATION MASK (206 KB)

In addition, here is the color table that's being used for published thermal inertia maps.

THERMAL INERTIA COLOR TABLE IN PPM FORMAT (4KB)
THERMAL INERTIA COLOR TABLE IN IDL FORMAT (36KB)

Specifications:

Example: If you are using IDL, you can read the thermal inertia file via

If you are running on a platform which is byte-swapped relative to Sun (e.g., Intel-based PC or Mac):

The following IDL code can be used to display the map:

IDL CODE FOR THERMAL INERTIA MAP DISPLAY (12KB)

Run with either IDL command:

All use of this map should carry the following reference:


Point of Contact:
        Michael T. Mellon
        Johns Hopkins University
        Applied Physics Laboratory
        11100 Johns Hopkins Road
        Laurel, MD 20723
        Email: Michael.Mellon@jhuapl.edu
        tel: 240-228-6091


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