Martian Proton Aurora Brightening Reveals Atmospheric Ion Loss Intensifying

The Martian proton aurora is a distinct phenomenon resulting from the direct deposition of solar wind energy into Mars' dayside atmosphere. What parameters influence activity in short term yet unknown, as are associated repercussions atmospheric ion loss. Here we present observational evidence synchronized brightening and loss intensifying on Mars, controlled by dynamic pressure, using observations Mars Atmosphere Volatile Evolution spacecraft. pressure possibly has saturation effect aurora. Significant erosion ionosphere during periods high indicates at least five-to-tenfold increase An empirical relationship between escape rate auroral emission enhancement established, providing new proxy with optical imaging that may be used remotely greater flexibility.