Set default value of fminval in gen_domain to 1.0e-08

Author: jonbob

tools/generate_domain_files/generate_domain_files_E3SM.py

@@ -94,7 +94,7 @@ class clr:END,RED,GREEN,MAGENTA,CYAN = '\033[0m','\033[31m','\033[32m','\033[35m
                   help='Creation date stamp for domain files')
 parser.add_option('--fminval',
                   dest='fminval',
-                  default=1e-3,
+                  default=1e-8,
                   help='Minimum allowable land fraction (reset to 0 below fminval)')
 parser.add_option('--fmaxval',
                   dest='fmaxval',