Done some searching, not sure if this is of any help but hey ho!
Courtesy of Americanwx forum:
"The model output from the Korean Met Agency is actually a version of the Unified Model (which is the proper name of the UKMET model) that they started running in 2007. They started using a 4DVAR assimilation scheme (like the ECMWF) earlier this year, and they're planning a resolution increase from the current 40 km to 25 km. The red line on the graph is their 4DVAR-based upgrade...it'll be interesting to see more results from that, especially after the resolution upgrade."
and i know this is outdated but if anyone can decipher it then go ahead as it was with the above quote