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(Article of periodic en Anglais - 2013)

Document title

Diurnal patterns in lightning activity in northern tropical Africa

Authors(s) and Affiliation(s)

SEN ROY S. (1) ; BALLING R.C. (2) ;
(1) Dept. of Geography and Regional Studies, Univ., Miami, ETATS-UNIS
(2) School of Geographical Sciences and Urban Planning at Arizona State Univ., Tempe, ETATS-UNIS

Abstract

The AA. analyze summertime lightning incidence data across northern tropical Africa from the TRMM satellite sensor during 1998–2011. They use harmonic analyses to detect the spatial patterns in diurnal variations of lightning activity across the study area. The results are in conformity with previous studies examining diurnal patterns of convective weather processes in this region, with most lightning activity concentrated over land areas. The peak time of lightning activity over most of the study area was during late afternoon hours. The peak time of lightning activity was observed during early morning hours in some coastal areas, such as Cameroon, which can be a result of local-level convergence between the land and sea breeze. A general progression in the time of lightning activity from late afternoon to early evening hours was observed throughout the interior of the study area, which may be attributed to land-surface heating and associated mesoscale convective systems, and to upper-level circulation in the form of the African Easterly Jet Stream

Source

Article of periodic

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2013, vol. 34, no2 [pp. 75-84]

Bibliographic references : 2 p.

Collation : 4 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1080/02723646.2013.787520

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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