PARSAX An Informal Look at Radar Technology and Applications within TU Delft

22Aug/12Off

Video Lectures on Polarimetric Radar for Meteorological Purposes

In the Meteorological institute of the University of Bonn on July 2012  a series of six lectures on the use of polarimetric radar for meteorological purposes was given by Dr. A. Ryzhkov from the National Severe Storms Laboratory, Norman, Oklahoma.  Alexander Ryzhkov is one of the world's leading scientists in the field of radar meteorology.

Lecture 3. Definition and informative content of Doppler polarimetric radar variables

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Lecture 3 explains the significance of polarimetric variables, such as differential reflectivity, differential phase, specific differential phase, attenuation and specific attenuation or cross-correlation coefficient and their use in observing the various types of meteorological and non-meteorological scatterers.

Lecture 4. Measurement Errors and Quality of Polarimetric Radar Data

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Lecture 4 provides insights into the difficulties of using polarimetric radar for meteorological applications, such as attenuation, wet radome and many other problems that users should be aware of, as well as correction methods.

Lecture 5. The impact of different micro-physical processes on polarimetric radar variables and their spatial distributions within clouds and precipitation

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Lecture 5 explains how different atmospheric processes like differential sedimentation, size sorting due to vertical air motions (updrafts / downdrafts) or the presence of wind shear (with and without veering, centrifuging), evaporation, deposition / riming / aggregation of snow particles, dry / wet hail growth, melting of snow / hail / graupel, coalescence / breakup and freezing / refreezing / icing, exhibit specific signatures in polarimetric radar data and how to spot them.


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