> had no idea what "graupel" was

funny. Here in Germany, "Graupel" is commonly used in normal weather reports. I didn't even know the word existed like that in english and didn't realize it when I read the paper. It's weird that you don't really notice words of your native language in a foreign language text. Or at least I rarely do. Same with the (originally German) words "Doppelgänger" and "Kindergarten".