NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Radio & Space Physics (IJRSP) >
IJRSP Vol.41 [2012] >
IJRSP Vol.41(4) [August 2012] >


Title: Developing a composite rainfall map based on observations from an X-band polarimetric radar network and conventional C-band radar
Authors: Maki, M
Maesaka, T
Kato, A
Kim, D S
Iwanami, K
Keywords: Composite rainfall map
Polarimetric radar
Quantitative precipitation estimates (QPE)
Rainfall attenuation
Signal extinction area
Issue Date: Aug-2012
Publisher: NISCAIR-CSIR, India
PACS No.: 92.60.jf; 84.40.Xb
Abstract: This paper aims to demonstrate the benefits of using X-band polarimetric radar networks for hydrological monitoring. A method of deriving composite rainfall maps is presented based on data from a combination of an X-band polarimetric radar network (X-NET) and supplementary conventional C-band radar, the latter used to extend the observation area. This approach was applied to a heavy rainfall event observed on 7 October 2009 associated with typhoon T0918 (located south of Japan). It was found that a signal extinction area developed behind the band of heavy rainfall, where the scattered signal was below the receiver’s noise level. Three networked X-band radars were able to fill in the signal extinction area, but the blanking azimuthal area of one of X-band radars remained. The use of C-band operational radar provides an alternative and effective approach to filling in the signal extinction area and extending the coverage area when the number of X-band polarimetric radars available is limited. Validation of the composite radar rainfall map using surface rain gauge data showed a good correlation between the two data sources, although the radar tends to underestimate rainfall amounts by around 20% compared with the rain gauges.
Page(s): 461-470
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-105X (Online); 0367-8393 (Print)
Source:IJRSP Vol.41(4) [August 2012]

Files in This Item:

File Description SizeFormat
IJRSP 41(4) 461-470.pdf727.65 kBAdobe PDFView/Open
 Current Page Visits: 461 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 575774 since 06-Feb-2009  Last updated on 26-Aug-2014Webmaster: nopr@niscair.res.in