Hi Joe,
The 'normal' scenario, with this type of ghost alerts, is that they are triggered by a second EC device in your aircraft - usually your own transponder, or by a ground uplink from a flarm or similar device, but I see from your Home Screen that you are running the newest software, which includes algorithms specifically designed to stop this sort of alerts. To be effective, however, it is essential to run your device in the 'Mode C/S Plus Filter' setting if you have a secondary EC device such as a transponder. A screenshot of your Configure Screen would be helpful so we can check the settings.
From screenshot 1, it would also appear that in your case the alerts might be being triggered (or at least exacerbated) by what seem to be sudden or very rapid changes in your reported altitude, which would appear to need further investigation.
Perhaps Lee would care to comment.
Best Regards
Peter