[ledauphin]

based on the article, it doesn't sound like this has anything specifically to do with temperature - the issue is more about whether there is moisture in the air.

If it were just a temperature thing, you'd think it could be automated, but I don't think that's really the main thing they're dealing with here.

In theory this means switching the system off when you exit the clouds.

This is usually pretty noticeable, but maybe less so at night, since you might be breaking out into a pocket or a clear layer between other layers, without visibly seeing much of anything outside.

I would hesitate to comment on the feasibility of this beyond what the interviewed persons have said, precisely because they're not clarifying (to the readers in any case) what the actual thresholds here are. And the interviewees don't seem convinced that this is a reasonable/safe requirement.