Add ice ring density field #2998

Job	Run time
Static Analysis	9s
Build package	4s
Build package	10s
Call ci unit tests workflow / Run tests (3.10)	1m 41s
Call ci unit tests workflow / Run tests (3.11)	1m 41s
Call ci unit tests workflow / Run tests (3.12)	1m 52s
	5m 37s

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