Saw this today:
http://news.delta.com/groundbreaking...oid-turbulence
The article explains that
It is also available in real time, thanks to fast and secure connectivity via Gogo’s in-flight Wi-Fi network, instead of through the traditional ACARS digital datalink system that’s been in place since the late 1970s.
I hope Gogo is more reliable for them than it usually is for me.