Those are model derived fields   meters just is a rounded measurement of the usual height temperaturemoisture is measured near ground level  meters  Just think of it as the temperature and relative humidity you see reported on the news  Models themselves still dont have a good handle of  meter temperature which is why MOS model output statistics still exist   meters is just the standard height of wind measurement  When you hear on the news that the wind is south at  mph it is at the  meter  foot level  Sorry about the delay in the response