1) restore soil resistance for CB soil; 2) skip snow optical process if SNICAR is not defined; 3) optimazition for output info; 4) for single point case, reading soil texture from global dataset.

1) restore soil resistance for CB soil; 2) skip snow optical process if SNICAR is not defined; 3) optimazition for output info; 4) for single point case, reading soil texture from global dataset. #316