# Calculating changes in surface temperature using THEMIS (Mars Odyssey) dataset

**URL:** <https://openplanetary.discourse.group/t/calculating-changes-in-surface-temperature-using-themis-mars-odyssey-dataset/798>\
**Category:** Planetary Datasets\
**Tags:** mars\
**Created:** [July 24, 2024, 12:54pm UTC](https://openplanetary.discourse.group/t/calculating-changes-in-surface-temperature-using-themis-mars-odyssey-dataset/798 "2024-07-24T12:54:42Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Sehajpal\_Singh](https://yyz2.discourse-cdn.com/free1/user_avatar/openplanetary.discourse.group/sehajpal_singh/32/338_2.png) [@Sehajpal\_Singh](https://openplanetary.discourse.group/u/Sehajpal_Singh)\
**Post date:** [July 24, 2024, 12:54pm UTC](https://openplanetary.discourse.group/t/calculating-changes-in-surface-temperature-using-themis-mars-odyssey-dataset/798/1 "2024-07-24T12:54:42Z")

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Does anyone know how to produce day and night surface temperature maps using THEMIS Projected Brightness Products (PBT) or any other THEMIS product?  
I want to monitor thermal inertia changes (seasonally ) for particular areas of Mars, and for that, I need to know the diurnal temperature difference.