VALIDATION AND GROUND TRUTH FOR TRMM PRECIPITATION RADAR USING THE MURADAR

Citation
T. Sato et al., VALIDATION AND GROUND TRUTH FOR TRMM PRECIPITATION RADAR USING THE MURADAR, IEICE transactions on communications, E79B(6), 1996, pp. 744-750
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Engineering, Eletrical & Electronic",Telecommunications
ISSN journal
0916-8516
Volume
E79B
Issue
6
Year of publication
1996
Pages
744 - 750
Database
ISI
SICI code
0916-8516(1996)E79B:6<744:VAGTFT>2.0.ZU;2-P
Abstract
The MU radar of Japan is one of important candidates for providing acc urate ground truth for the TRMM precipitation radar. It can provide th e dropsize distribution data together with the background atmospheric wind data with high accuracy and high spatial resolution. Special obse rvation scheme developed for TRMM validation using the MU radar is des cribed, and preliminary results from its test experiment are shown. Th e high-resolution MU radar data are also used in numerical simulations to validate the rain retrieval algorithm for the TRMM PR data analysi s. Among known sources of errors in the rain retrieval, the vertical v ariability of the dropsize distribution and the partial beam-filling e ffect are examined in terms of their significance with numerical simul ations based on the MU radar data. It is shown that these factors may seriously affect the accuracy of the TRMM rain retrieval, and that it is necessary to establish statistical means for compensation. However, suggested means to improve the conventional alpha-adjustment method r equire careful treatment so that they do not introduce new sources of errors.