Mars' emitted energy and seasonal energy imbalance

Proc Natl Acad Sci U S A. 2022 May 24;119(21):e2121084119. doi: 10.1073/pnas.2121084119. Epub 2022 May 16.

Abstract

SignificanceThe radiant energy budget is a fundamental metric for planets. Based on the observations from multiple missions, we provide a global picture of Mars' emitted power. Furthermore, we estimate the radiant energy budget of Mars, which suggests that there are energy imbalances at the time scale of Mars' seasons. Such energy imbalances provide a new perspective to understanding the generating mechanism of dust storms. Mars' radiant energy budget is assumed to be balanced at all time scales in current models and theories, but our analyses show that the energy budget is not balanced, at least at the time scale of Mars' seasons. Therefore, current theories and models should be revisited with the newly revealed energy characteristics.

Keywords: Mars; dust storms; energy budget.