Hi, You can use INTERPB program to convert MM5 outputs to pressure level and then use program MM5toGRIB. Take a look on this page http://redibericamm5.uib.es/algoritmos.htm. Regards -------------- next part -------------- An HTML attachment was scrubbed... URL: http://gradsusr.org/pipermail/gradsusr/attachments/20071017/111cdfb1/attachment.html