For those interested in the meteorological conditions during the incident, here are two links for the vertical soundings of 05/00 utc and 05/12 utc.
They were launched in Oberschleissheim, only about 25 km away from the airport.
Conditions didn't change a lot during the first half of the day.
Sounding 05/00 utc
Sounding 05/12 utc