Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Quantitative analysis of X-band weather radar attenuation correction accuracy
 
Loading...
Thumbnail Image
research article

Quantitative analysis of X-band weather radar attenuation correction accuracy

Berne, A.  
•
Uijlenhoet, R.
2006
Natural Hazards and Earth System Sciences

At short wavelengths, especially C-, X-, and K-band, weather radar signals are attenuated by the precipitation along their paths. This constitutes a major source of error for radar rainfall estimation, in particular for intense precipitation. A recently developed stochastic simulator of range profiles of raindrop size distributions (DSD) provides a controlled experiment framework to investigate the accuracy and robustness of attenuation correction algorithms. The work presented here focuses on the quantification of the influence of uncertainties concerning radar calibration, the parameterization of power law relations between the integral variables (radar reflectivity Z and specific attenuation k), and total path integrated attenuation (PIA) estimations. The analysis concerns single frequency, incoherent and non-polarimetric radar systems. Two attenuation correction algorithms are studied: a forward algorithm based on the analytical solution proposed by Hitschfeld and Bordan (1954) and a backward algorithm based on the solution proposed by Marzoug and Amayenc (1994). From DSD range profiles, the corresponding profiles of integral radar variables are derived. Using a Monte Carlo approach, the accuracy and robustness of the two algorithms are quantified for the different sources of error previously mentioned.

  • Files
  • Details
  • Metrics
Loading...
Thumbnail Image
Name

6-419-2006-nhess-6-419-2006.pdf

Type

Publisher's Version

Access type

openaccess

License Condition

CC BY-NC-SA

Size

422.74 KB

Format

Adobe PDF

Checksum (MD5)

43d6ef1096422820696168219e63b335

Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés