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Comparative Analysis of Total Ozone Data from Satellite EPTOMS and Ground-Based Dobson Instrument at Lagos-Nigeria

Akinyemi, M. L. (2011) Comparative Analysis of Total Ozone Data from Satellite EPTOMS and Ground-Based Dobson Instrument at Lagos-Nigeria. Journal of Innovative Research in Engineering and Science, 2 (3). pp. 162-172. ISSN 2141-8225

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Abstract

This work represents a comparison study of total ozone data from the ground-based Dobson spectrophotometer and the overpass data from satellite instrument EPTOMS in Lagos-Nigeria (Lat.6.6oN, Long 3.3oE) for the year 1997-2002. The result indicated that EPTOMS ozone series overestimated those of the Dobson’s maximally between July-September with an average difference of 11%, while the Dobson ozone profile exceeded the EPTOMS by 6% in the month December-January. A strong anti-correlation of -0.88 was observed between the Dobson’s ozone profile and the EPTOMS in the month July-September. The Dobson data showed considerable high frequency fluctuations with no clear seasonal trend. Maximum inter-annual differences for both instruments fell within the period of low precipitation in the West Africa region. Despite the monthly differences in the two set of data, their seasonal and annual component showed significant positive correlation of 0.53 with each other

Item Type: Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User: Mr Solomon Bayoko
Date Deposited: 31 Oct 2013 15:40
Last Modified: 31 Oct 2013 15:40
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/1769

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