I was aware of the Spanish meaning which is the same, but the reason we picked it was more mundane. It was one of the few names my wife and I both liked a lot.
ALMA is also a radio telescope in Chile (the Atacama Large Millimeter Array), which is somewhat closer afield to what I do.
Is this why you picked the name? I like it. I went with Ada myself (after Lovelace - wife only found-out why years later).