VAP : Microwave Radiometer-Scaled Sonde Profiles (LSSONDE)

Instrument Categories
Derived Quantities and Models

During the Quality Measurement Experiment, a detailed analysis of the output from the AERI Line-by-Line Radiative Transfer Model (LBLRTM) indicated that the error between the observed radiance from the AERI and that calculated by the LBLRTM is primarily due to errors in specifying the atmospheric state. In particular, errors in determining the water vapor profile have a profound influence on the radiance residuals, introducing both a bias and increasing the variability. The radiosonde's water vapor calibration has been observed to fluctuate between radiosonde calibration lots (called batches), as well as within each calibration batch. To reduce the variability and bias introduced into the QME AERI/LBLRTM radiance residuals, the moisture profiles from each radiosonde are scaled such that its total precipitable water vapor matches that retrieved from the microwave radiometer (MWR), and these scaled profiles are used to drive the model.

For more details, see

Output Products

  • lssonde : BBSS: derived, relative humidity scaled with MWR

Primary Measurements

The following measurements are those considered scientifically relevant.


Southern Great Plains
SGPB1 Browse DataHillsboro, KS (Boundary) retired
SGPB4 Browse DataVici, OK (Boundary) retired
SGPB5 Browse DataMorris, OK (Boundary) retired
SGPB6 Browse DataPurcell, OK (Boundary) retired
SGPC1 Browse DataCentral Facility, Lamont, OK
ARM Mobile Facility
ACXM1 Browse DataOff the Coast of California - NOAA Ship Ronald H. Brown; AMF2
 retired = Originating instrument has been retired at this location


David Troyan
Brookhaven National Laboratory
(631) 344-8245

Michael Jensen
Brookhaven National Laboratory
(631) 344-7021