|ACPD Review: Reviewer #3|
Convective hydration in the tropical tropopause layer during the StratoClim aircraft campaign: Pathway of an observed hydration patch
Overall, the authors have addressed my comments. I appreciate the added discussion (and references), which have improved this article. I think the article will be ready for publishing with some additional discussion on certain simulated features that are not fully explained (see below).
The role of isolated overshoots in the simulated widespread mixing is still unclear. The use of TKE to show mixing is not compelling for the widespread signal, as it just looks like an overall lifting of the tropospheric heights at later times. The authors do show mixing at the location of the overshoot. But what is missing is any signal that shows that mixing traveling outwards from that overshoot location. How can you explain that isolated overshoots cause mixing to appear uniformly throughout an entire layer of the atmosphere? (particularly figures 8 and 9, panels h-l.) It doesn’t make physical sense. A sentence or two added to the article that acknowledges the role of numerical diffusion (not just physical) in some of the signal would be useful. And that this component of the simulated signal needs more investigation. A little more discussion will be particularly valuable for readers of your article that are not modeling experts.
line 172-173: WMO 1957 & Maddox and Mullendore 2018 are not in the reference list.