Subject: | NIM/MERGESONDE/M1 - Suspect rh_scaled values |
DataStreams: | nimmergesonde2maceM1.c1, nimmergesonde1maceM1.c1
|
Description: | MERGESONDE sometimes uses bad or questionable precipitable water vapor data to scale the
relative humidity profiles provided by the rh_scaled field. In addition, this bad input
data is not properly indicated by the vapor_source or qc_rh_scaled fields. This problem
appears to typically occur when there is moisture impacting the microwave radiometer causing
large spikes in brightness temperatures. During these periods the rh_scaled values are
often saturated at 101% for much of the profile.
A new version of the MERGESONDE VAP has corrected this problem, and these data will
eventually be corrected by a reprocessing task. |
Suggestions: | Take care when using the data from the rh_scaled field, particularly during
precipitation events. Check the stat2_pwv field from the MWRRET VAP, and/or the vap field from
the MWR instrument for problems before using these data. |
Measurements: | nimmergesonde1maceM1.c1: more
nimmergesonde2maceM1.c1: more
|