Changes from the In-Field Data Set


High-quality data collection depends upon preparation and proper field procedures. Never-the-less, there follows a post-field evalution process that may result in modifications to the data set, or potential improvements to increase data utility. Changes made to the in-field S-PolKa data set are detailed, here.

Changes/Improvements to S-PolKa Data

Considerable energy has been invested in making the S-PolKa/DYNAMO data set one of the most accurate and usable S-Pol date sets, ever. Specific changes include:

What Has Not Changed

EOL maintains a complete set of the original S-PolKa data. Should any problems be found in derivations or re-calculations, data can be reprocessed.

The original COVAR data set has not been changed. Derived power quantities (DBMHC, DBMHX, etc.) remain unchanged, except where censoring has flagged these values as "bad".

Implications for Data Users

Obviously, if you are using a data set derived from the real-time, in-field data stream, you should update your data set. While many parameters have not been changed, the censoring algorithm has been greatly improved, and use of the (version-1) final data set will ease any tasks associated with further data editing or censoring.

It is particularly important that you update any in-field data sets using the PID or precipitation rate variables. Both have been re-computed using the new censoring and the attenuation-corrected S-band reflectivity. The updated noise-power correction combined with a recalculated RHOHV, has resulted in better PID on the edges of echoes.