> His heart broken hearing the screams of terror as man and beast scrambled to higher and higher ground
Checked.
I'm sure Noah didn't hear anything, except what was going on inside his ark.
It took 40 days for the water to get to its apex, so man and beast had plenty of time to get to high ground. Those on the earth probably partied for the first week or so, and continued on with their lives as normal, so screaming in terror wasn't a thing for at least a couple of weeks, or even until the last week of those 40 days.
It also doesn't make sense that he would have heard anyone's screams of terror from outside his ark, because he would have been tempted to do something. He had a mission he had to fulfill. Jeopardizing the mission for some people outside of his ark was out of the question.
I suspect that the conditions on earth took his ark far, far out to sea. And if it were nearby to any humans, chances are that they would have tried to board the ship to save themselves, which would have put both his family, and the mission, in jeopardy.
And it also says nothing of where the waves and winds took his ark, so it's impossible to tell where he was on the earth, except on the water.
I don't think he mourned for anything in the manner you're thinking of. If anything, he was probably relieved to some degree, because he was proved right, and probably even liked that certain people were dying because they didn't listen.
Even then, he and his family were isolated, and were busy taking care of the animals (and other stuff) in their immediate possession, so such thinking would have been a waste of energy.
All in all, how the modern church (and even media) have portrayed that story has removed the vast majority of the truth from it. Over 99% of the information of that story was removed for us, so we're left with less than very little to go on. And everything added to it by the church and the media remove what truth there is to it.