Comparison of Advanced Radar Polarimetric Techniques for Operational Attenuation Correction at C Band

  title={Comparison of Advanced Radar Polarimetric Techniques for Operational Attenuation Correction at C Band},
  author={Gianfranco Vulpiani and Pierre Tabary and Jacques Parent Du Chatelet and Frank Silvio Marzano},
  journal={Journal of Atmospheric and Oceanic Technology},
Abstract Rain path attenuation correction is a challenging task for quantitative use of weather radar measurements at frequencies higher than S band. The proportionality relationship between specific attenuation αhh (specific differential attenuation αdp) and specific differential phase Kdp is the basis for simple path-integrated attenuation correction using differential phase Φdp. However, the coefficients of proportionality are known to be dependent upon temperature, on the one hand, and… 

Adaptive Attenuation Correction Techniques for C-Band Polarimetric Weather Radars

  • M. Rico-Ramirez
  • Environmental Science
    IEEE Transactions on Geoscience and Remote Sensing
  • 2012
The results showed that the the adaptive attenuation correction techniques have a higher performance than the nonadaptive ones when comparing the measured and computed ΦDP profiles and also when comparing with reflectivity measurements from a nearby radar.

Polarimetric Attenuation Correction in Heavy Rain at C Band

Abstract The ability of C-band polarimetric radar to account for strong attenuation/differential attenuation is demonstrated in two cases of heavy rain that occurred in the Chicago, Illinois,

Rainfall-induced attenuation correction for two operational dual-polarization C-band radars in the Netherlands

The Royal Netherlands Meteorological Institute (KNMI) operates two operational dual-polarization C-band weather radars providing 2-D radar rainfall products. Attenuation can result in severe

Unusually High Differential Attenuation at C Band: Results from a Two-Year Analysis of the French Trappes Polarimetric Radar Data

The differential phase (FDP) measured by polarimetric radars is recognized to be a very good indicator of the path integrated by rain. Moreover, if a linear relationship is assumed between the

Integrated Correction Algorithm for X Band Dual-Polarization Radar Reflectivity Based on CINRAD/SA Radar

The values of ratio a of the linear relationship between specific attenuation and specific differential phase vary significantly in convective storms as a result of resonance scattering. The

Polarimetric attenuation correction and rainfall estimation for heavy rain events at C band

To obtain high-quality radar data, reliable radar calibration and efficient attenuation correction are very important. Microwave radiation at shorter wavelength experiences strong attenuation in

Characterization of Mediterranean hail-bearing storms using an operational polarimetric X-band radar

Abstract. This work documents the effective use of X-band radar observations for monitoring severe storms in an operational framework. Two severe hail-bearing Mediterranean storms that occurred in

Iterative Bayesian Retrieval of Hydrometeor Content From X-Band Polarimetric Weather Radar

An integrated iterative Bayesian radar algorithm (IBRA) scheme, based on the availability of the differential phase measurement, is presented and tested during the International H2O Project experiment in Oklahoma in 2002 and shows a significant improvement with respect to the performance with no path attenuation correction.

Benchmarking attenuation correction procedures for six years of single-polarized C-band weather radar observations in South-West Germany

ABSTRACT Rainfall-induced attenuation is a major source of underestimation for radar-based precipitation estimation at C-band. Unconstrained gate-by-gate correction procedures are known to be



Evaluation of Attenuation Correction Methodology for Dual-Polarization Radars: Application to X-Band Systems

Abstract Monitoring of precipitation using high-frequency radar systems, such as the X band, is becoming increasingly popular because of their lower cost compared to their S-band counterpart.

ERAD 2006 Proceedings of A new polarimetric scheme for attenuation correction at C band

A long-standing problem of attenuation correction at shorter weather radar wavelengths can be efficiently resolved by using measurements of differential phase ΦDP if the radar is polarimetrically

Correction for attenuation of radar reflectivity using polarization data

Attenuation by heavy rain is a major operational problem in radar estimation of rainfall rates, and one which is increasingly severe at wavelengths shorter than 10 cm. Gate‐by‐gate correction

Rainfall rate retrieval in presence of path attenuation using C-band polarimetric weather radars

Weather radar systems are very suitable tools for the monitoring of extreme rainfall events providing measure- ments with high spatial and temporal resolution over a wide geographical area.

The Rain Profiling Algorithm Applied to Polarimetric Weather Radar

Abstract The algorithm developed in this paper for ground-based polarimetric radars is derived from those used for the spaceborne rain radar of TRMM (Tropical Rainfall Measurement Mission)—the

Bayesian classification of hydrometeors from polarimetric radars at S- and X- bands: algorithm design and experimental comparisons

A model- supervised Bayesian method for hydrometeor classification (BRAHC), tuned for S- and X- band, is described in this study and the impact of path attenuation correction is quantitatively analyzed.

Validation of the Rain Profiling Algorithm “ZPHI” from the C-Band Polarimetric Weather Radar in Darwin

Abstract An extensive application of a rain profiling algorithm (ZPHI) employing a C-band polarimetric radar (the C-POL radar of the Australian Bureau of Meteorology Research Centre in Darwin) is

Correcting C-band radar reflectivity and differential reflectivity data for rain attenuation: a self-consistent method with constraints

A self-consistent, constraint-based algorithm is proposed and evaluated which extends the previous approaches in several important respects and is relatively immune to the precise drop axis ratio versus drop diameter relation.

Determination of Rain Rate from a Spaceborne Radar Using Measurements of Total Attenuation

Several experimental and theoretical studies have shown that path-integrated rain rates can be determined by means of a direct measurement of attenuation. For ground-based radars, this is done by

Constrained iterative technique with embedded neural network for dual-polarization radar correction of rain path attenuation

Evaluated evaluations of a new stable backward iterative technique to correct for path attenuation and differential attenuation show relatively better performance and robustness of the attenuation correction process when compared with currently available techniques.