I would like to output field of ZNT roughness length in wrfout_d01*. It's right that I just change the Registry.EM_COMMON, from i3r to i3rh?

state real ZNT ij misc 1 - i3r "ZNT" "TIME-VARYING ROUGHNESS LENGTH" "m"

By the way, what's the I/O mean? such as irhdu , i01rhdu, irh0{22}{23}du

state real Q2 ij misc 1 - irh0{22}{23}du "Q2" "QV at 2 M" "kg kg-1"

state real T2 ij misc 1 - i01rh0{22}{23}du "T2" "TEMP at 2 M" "K"

state real TH2 ij misc 1 - irhdu "TH2" "POT TEMP at 2 M" "K"

state real PSFC ij misc 1 - i01rhdu "PSFC" "SFC PRESSURE" "Pa"

Thanks!

Zhuming