| Description: | The diurnal temperature change in the tsoil measurements from all sensors installed below
5 cm at this facility appear questionable. On a daily basis, the diurnal trends in the
tsoil measurements from depths below 5 cm did not match the above ground tref measurements
or the tsoil measurements from the 5 cm W sensor (the 5 cm E sensor has failed). The
tsoil measurements from these deeper sensors began to decrease prior to solar noon nearly
every day. Also, the magnitudes of the diurnal change in these instruments appear to be the
same for all sensors (Normally, the diurnal changes in tsoil are damped as we progress
deeper below the surface).
Attempts to correct the problem were unsuccessful until the time of site decommissioning.
This facility was decommissioned and maintenance efforts ceased 10/1/2009. |