Cloud Base Height Charts

When the infrared radiometer option is installed, the RPG-TEMPRO and RPG-HATPRO can measure the cloud base height by identifying the infrared radiometer temperature with the physical temperature of the cloud base (if any) and deriving the height of the cloud by using the temperature profiles. The embedded radiometer PC automatically generates the cloud base height charts (*.CBH) when infrared radiometer data is acquired and temperature profile data is available. The same is true for the host PC when it monitors IR data and temperature profiles. Even though a post-processing is possible which means a manual generation of a MyName.CBH file from a MyName.IRT + MyName.TPC or MyName.CMP.TPC file. The MyName.CMP.TPC file (if available) is always preferred over the MyName.TPC file because the composite temperature profiles are more accurate than those derived from zenith observations only.
The manual post-processing of IRT and TPC data is performed in the IR data display window as shown below.