TY - JOUR
T1 - Evaluation of X-band polarimetric-radar estimates of drop-size distributions from coincident S-band polarimetric estimates and measured raindrop spectra
AU - Anagnostou, Marios N.
AU - Anagnostou, Emmanouil N.
AU - Vulpiani, Gianfranco
AU - Montopoli, Mario
AU - Marzano, Frank S.
AU - Vivekanandan, Jothiram
PY - 2008/10
Y1 - 2008/10
N2 - Recent research has demonstrated the value of polarimetric measurements for the correction of rain-path attenuation at X-band radar frequency and the estimation of rain parameters including drop-size distributions (DSD). The issue this paper is concerned with is to what degree uncertainties in attenuation correction can affect the estimation of DSD. Since attenuation-correction uncertainty enhances with rain path, our hypothesis is that DSD retrieval uncertainty at X-band may deteriorate with range. In this paper, we evaluate the relative accuracy of X-band DSD retrieval against DSD estimates from S-band radar observations and in situ disdrometer spectra. We present comparisons of various techniques for estimating DSD model parameters from attenuation- corrected X-band dual-polarization radar data. Coincident X-band polarimetric-radar (XPOL) and S-band polarimetric-radar dual-polarized radar measurements from the International H2O Project experiment as well as coincident XPOL (MP-X) measurements over disdrometer during a typhoon storm case in Japan are used to assess the accuracy of the different DSD retrieval algorithms applied to X-band radar measurements.
AB - Recent research has demonstrated the value of polarimetric measurements for the correction of rain-path attenuation at X-band radar frequency and the estimation of rain parameters including drop-size distributions (DSD). The issue this paper is concerned with is to what degree uncertainties in attenuation correction can affect the estimation of DSD. Since attenuation-correction uncertainty enhances with rain path, our hypothesis is that DSD retrieval uncertainty at X-band may deteriorate with range. In this paper, we evaluate the relative accuracy of X-band DSD retrieval against DSD estimates from S-band radar observations and in situ disdrometer spectra. We present comparisons of various techniques for estimating DSD model parameters from attenuation- corrected X-band dual-polarization radar data. Coincident X-band polarimetric-radar (XPOL) and S-band polarimetric-radar dual-polarized radar measurements from the International H2O Project experiment as well as coincident XPOL (MP-X) measurements over disdrometer during a typhoon storm case in Japan are used to assess the accuracy of the different DSD retrieval algorithms applied to X-band radar measurements.
KW - Attenuation correction
KW - Drop-size distribution (DSD) retrievals
KW - Polarimetric radar
KW - S-band radar
KW - X-band radar
UR - https://www.scopus.com/pages/publications/53849092116
U2 - 10.1109/TGRS.2008.2000757
DO - 10.1109/TGRS.2008.2000757
M3 - Article
AN - SCOPUS:53849092116
SN - 0196-2892
VL - 46
SP - 3067
EP - 3075
JO - IEEE Transactions on Geoscience and Remote Sensing
JF - IEEE Transactions on Geoscience and Remote Sensing
IS - 10
M1 - 4637922
ER -