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VAPS Icon "lssonde" Value-Added Product (VAP)

Active Dates: 4/11/1994 to 5/4/2009.

Description: BBSS: derived, relative humidity scaled with MWR

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 http://science.arm.gov/vaps/lssonde.stm.

Originating VAP Process

Primary Measurements

The following measurements are those considered scientifically relevant. Refer to the datastream (netcdf) file headers for the list of all available measurements, including those recorded for diagnostic or quality assurance purposes.

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