TWP/MICROBASE/C3  - Incorrect detection of precipitation

Microbase uses the CloudBasePrecipitation field from twparscl1clothC3.c1 to determine the 
occurrence of precipitation.  As noted in DQR D061220.35 for twparscl1clothC3.c1, the 
CloudBasePrecipitation is incorrect over this period due to a processing issue.  As a 
result, the values in the Microbase aqc_precip field are incorrect.  In addition, values of 
"14" to indicate precipitation in the Microbase aqc_liquid_water_content and 
aqc_liq_effective_radius fields are incorrect and should be ignored.  Because we don't know when 
precipitation occurred, values of liquid_water_content and liq_effective_radius are suspect over 
this period.

• Liquid Effective Radius(liq_effective_radius)
• Retrieved Liquid Water Content(liquid_water_content)

TWP/MICROBASE/C3 - Detection of precipitation is suspect

Microbase uses the CloudBasePrecipitation field from the twparscl1clothC3.c1 product to 
determine the occurrence of precipitation.  The twparscl1clothC3.c1 CloudBasePrecipitation 
field is partially derived from the precip_mean field in the twpsmet60sC3.b1 product.  
DQR D060426.8 indicates there is a grounding issue with the optical rain gauge and the 
precip_mean values from twpsmet60sC1.b1 are suspect over this period.

As a result, the values in the Microbase aqc_precip field could be suspect.  Values of 
"14" to indicate precipitation in the Microbase aqc_liquid_water_content and 
aqc_liq_effective_radius fields could be suspect as well.  Because we aren't certain when precipitation 
occurred, values of liquid_water_content and liq_effective_radius should be carefully 
evaluated during this period.

• Liquid Effective Radius(liq_effective_radius)
• Retrieved Liquid Water Content(liquid_water_content)