NISCAIR Online Periodicals Repository

Research Journals >
Indian Journal of Radio & Space Physics (IJRSP) >
IJRSP Vol.38 [2009] >
IJRSP Vol.38(6) [December 2009] >

Title: Atmospheric stability estimation using radio occultation data over India and surrounding region
Authors: Sharma, Neerja
Jagadheesha, D
Joshi, P C
Pal, P K
Keywords: Radio occultation data
Atmospheric stability indices
Refractivity index
Rainfall intensity
Issue Date: Dec-2009
Publisher: CSIR
PACS No.:; 95.10.Gi
Abstract:  The paper presents analysis of occurrence and intensity of rainfall with the lifted index (LI), total precipitable water (TPW), average relative humidity (ARH) and average refractivity (RI) derived from radio occultation (RO) data. Constellation Observing System has been used for meteorology, ionosphere and climate (COSMIC) refractivity and 1-d variational assimilation retrievals of pressure, temperature and water vapour pressure during May-August 2007 over India and the surrounding region. The results mainly indicate that RO data can be a sensitive measure of rainfall. LI, TPW and ARH together are linked to give 90% probability of occurrence of rainfall events. Almost similar probability of rainfall occurrence and its intensity is captured when RI is used in place of LI. The results emphasize that RO average refractivity (above a certain threshold) is a measure of instability of the atmosphere and can be used as stability index instead of LI. RI in combination with moisture indices is able to give potential signature of rainfall occurrence and its intensity.
Page(s): 317-325
ISSN: 0975-105X (Online); 0367-8393 (Print)
Source:IJRSP Vol.38(6) [December 2009]

Files in This Item:

File Description SizeFormat
IJRSP 38(6) 317-325.pdf307.97 kBAdobe PDFView/Open
 Current Page Visits: 198 
Recommend this item


Online Submission of Articles |  NISCAIR Website |  National Knowledge Resources Consortium |  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 © 2015 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: 165789 since 01-Sep-2015  Last updated on 27-Jun-2016Webmaster: