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This paper presents the results of a study designed to evaluate the performance of attenuation correction algorithms due to heavy precipitation at operational C-band weather radar frequencies and using differential phase measurements. This paper proposes the extension of two attenuation correction algorithms and shows a methodology to validate attenuation-corrected reflectivity measurements by using a nearby radar as opposed to the traditional use of rain gauge or disdrometer measurements. The results showed that the the adaptive attenuation correction techniques have a higher performance than the nonadaptive ones when comparing the measured and computed Phi(DP) profiles and also when comparing with reflectivity measurements from a nearby radar. The results also showed that the difference in the performance of the adaptive attenuation correction algorithms is minimal and optimizing a single parameter (e. g., alpha in the BRI algorithm) rather than three unknown parameters (e. g., a, b, and alpha in the AHB or AFV algorithms) is a more robust procedure.
|Translated title of the contribution||Adaptive attenuation correction techniques for C-band polarimetric weather radars|
|Number of pages||11|
|Journal||IEEE Transactions on Geoscience and Remote Sensing|
|Publication status||Published - Dec 2012|
- polarimetric radar
- RAINDROP SIZE DISTRIBUTION
- DIFFERENTIAL PROPAGATION PHASE
- RAINFALL ESTIMATION
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1/01/11 → 1/05/12