# New and Extended Data Processing of Mars Odyssey Neutron Spectrometer Data

## TL;DR

This paper introduces a new extended analysis of Mars Odyssey Neutron Spectrometer data, providing updated neutron maps and preliminary insights into inter-annual polar variability on Mars.

## Contribution

It presents a novel extended dataset and analysis methodology for MONS data, improving temporal coverage and enabling new studies of Martian polar regions.

## Key findings

- Extended MONS neutron data maps created
- Preliminary inter-annual variability results in polar regions
- Comparison with previous MONS data analyses

## Abstract

The Los Alamos National Laboratory designed and built Mars Odyssey Neutron Spectrometer (MONS) has been in excellent health operating from February 2002 to the present. MONS measures the neutron leakage albedo from galactic cosmic ray bombardment of Mars. These signals can indicate the presence of near-surface water deposits on Mars, and can also be used to study properties of the seasonal polar CO$_2$ ice caps. This work outlines a new analysis of the MONS data that results in new and extended time-series maps of MONS thermal and epithermal neutron data. The new data are compared to previous publications on the MONS instrument. We then present preliminary results studying the inter-annual variability in the polar regions of Mars based on 8 Mars-Years of MONS data from the new dataset.