Please use this identifier to cite or link to this item:
Title: Electrical conductivity of the stratosphere over Hyderabad, India: Results from Balloon borne measurements
Authors: Gupta, S P
Thampi, Smitha V
Keywords: Stratosphere;Electrical conductivity;Photo-dissociation;Ion conductivity;Solar activity
Issue Date: Sep-2015
Publisher: NISCAIR-CSIR, India
PACS No.: 92.60.hd;96.60.Q–
Abstract: The stratospheric conductivity is an important parameter of the global electric circuit. In this paper, the stratospheric conductivity measurements are presented, which were made using high altitude balloon flights from Hyderabad (geographic 17.5°N, 78.5°E; magnetic lat 8.5°N), India as a part of the IMAP (1982-1994) program of India. The vertical profiles of ion conductivity were measured from Hyderabad during periods with different solar activity levels and during different seasons using different techniques. It was observed that conductivity values in stratosphere are larger in high solar activity period as compared to low solar activity period. This is similar in nature to the observations from mid-latitudes. The observed positive correlation with solar activity is discussed in terms of composition changes due to the change in intensity of the UV (200-300 nm) radiation with solar activity. It was found that the dissociation of heavy cluster ions to lighter ions, as conjectured by Gupta [Solar cycle variation of stratospheric conductivity over low latitude, Adv Space Res (UK), 26 (2000.) pp 1225–1229] is the main reason for the observed positive correlation of stratospheric conductivity with solar activity. No significant seasonal effect was noticed. In addition, conductivity profile obtained from Hyderabad is compared to that obtained from Cachoeira Paulista, Brazil.
Page(s): 132-137
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.44(3) [September 2015]

Files in This Item:
File Description SizeFormat 
IJRSP 44(3) 132-137.pdf155.7 kBAdobe PDFView/Open

Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.