0000000000000000000000000000000000000000 20a04bb9e4225e9d418ac77c95d6659e50b5bcc7 Wei Wang <weiwang@ucar.edu> 1490203598 -0600	branch: Created from master
20a04bb9e4225e9d418ac77c95d6659e50b5bcc7 2c1a0cb0fa00f20444420969cb112adbbcf8fa93 Wei Wang <weiwang@ucar.edu> 1490203902 -0600	commit: make sure the probability of freezing water drops into either cloud ice or graupel is always positive
