U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Operational C-Band Dual-Polarization Radar QPE for the Subtropical Complex Terrain of Taiwan

File Language:


Details

  • Journal Title:
    Advances in Meteorology
  • Personal Author:
  • NOAA Program & Office:
  • Description:
    Complex terrain poses significant challenges to the radar based quantitative precipitation estimation (QPE) because of blockages to the lower tilts of radar observations. The blockages often force the use of higher tilts data to estimate precipitation at the ground and result in errors due to vertical variations of the radar variables. To obtain accurate radar QPEs in the subtropical complex terrain of Taiwan, a vertically corrected composite algorithm (VCCA) was developed for two C-band polarimetric radars. The new algorithm corrects higher tilt radar variables with the vertical profile of reflectivity (VPR) or vertical profile of specific differential phase (VPSDP) and estimates rainfall rate at the ground through an automated combination of R-Z and  relations. The VCCA was assessed with three precipitation cases of different regimes including typhoon, mei-yu, and summer stratiform precipitation events. The results showed that a combination of R-Z and  relations provided more accurate QPEs than each alone because R-Z provides better rainfall estimates for light rains and  relation is more suitable for heavy rains. The vertical profile corrections for reflectivity and specific differential phase significantly reduced radar QPE errors caused by inadequate sampling of the orographic enhancement of precipitation near the ground.
  • Source:
    Advances in Meteorology, 2016
  • DOI:
  • Document Type:
    Journal Article
  • Funding:
    Grant no. NA110AR4320072
  • Rights Information:
    CC BY
  • Compliance:
    Submitted
  • Main Document Checksum:
    urn:sha256:61b3fdc100ae2bad52f1c1c9267d65596b178623f80c7c2779650d51df960768
  • Download URL:
  • File Type:
    Filetype[PDF - 6.25 MB ]
PREVIOUS
File Language:
ON THIS PAGE
Details
The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP