"Therefore, this model provides a new mechanism that explains how water moves between the lunar surface and the thin lunar atmosphere.".
It's important to note that this isn't the first study to look at surface roughness in relation to Moon water."The model of the surface temperature of the Moon described in this paper has significant implications for understanding the presence and evolution of water on the lunar surface," Davidsson and Hosseini write in their new paper"It is of critical importance to take account of the surface roughness to get an accurate picture of the amount of water on the surface of the Moon."