The SSD encryption key will only be deleted in case of a tamper event, NOT when the unit is moved. Tamper events are: * freezing the unit * drilling the secure enclosure or other wise breaking the traces on it * prying the enclosure off the PCB So I don't think you have to be too worried about a false trigger of a key erasing.

Is there a specific temperature about which I should be concerned? I live in a cold climate and would hate to lose data (even if it is backed up) in the event that I lose heating.

what temperature (approximately) is "freezing" (or less likely, overheating)?

We currently have a Spec temperature of triggering a 'freezing event" at just above freezing Temperature 33-35F.

so if I live in a cold place and take it outside then it might erase my data? or what yellowapple said about losing heating, if I live in a really cold place; if pipes can go below 0 C due to cold temperature, why can I expect that ORWL won't?

Can a tamper event be triggered through software? It would really simplify the ability to create trap passwords which wipe the device.

Particularly by overheating the processor or other components like one might do if melting stuff off the outside with flame or acid application.

I was hoping for something a little more direct, deterministic, immediate, and non-damaging.