Am using EH5OM global data for downscaling in RegCM 4.0. I got the output  from 1.875 degree * 1.875 Degree to around 60 km Resolution. Can i use this outputs for creating ICBC for 10 km resolution (Second Nesting )?? If it is possible how it will be done??? These .ctl formats will accept ICBC creation??? Can you please solve my question.....