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Titolo:
Climatic and environmental impacts of cold fronts over KwaZulu-Natal and the adjacent interior of southern Africa
Autore:
Grab, SW; Simpson, AJ;
Indirizzi:
Univ Witwatersrand, Dept Geog & Environm Studies, ZA-2050 Wits, South Africa Univ Witwatersrand Wits South Africa ZA-2050 ZA-2050 Wits, South Africa Univ Natal, Sch Appl Environm Studies, Discipline Geog, ZA-3209 Pietermaritzburg, South Africa Univ Natal Pietermaritzburg South Africa ZA-3209 aritzburg, South Africa
Titolo Testata:
SOUTH AFRICAN JOURNAL OF SCIENCE
fascicolo: 11-12, volume: 96, anno: 2000,
pagine: 602 - 608
SICI:
0038-2353(200011/12)96:11-12<602:CAEIOC>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
GENERAL-CIRCULATION MODELS; RAINFALL; SUMMER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Grab, SW Univ Witwatersrand, Dept Geog & Environm Studies, Private Bag 3, ZA-2050 Wits, South Africa Univ Witwatersrand Private Bag 3 Wits South Africa ZA-2050 frica
Citazione:
S.W. Grab e A.J. Simpson, "Climatic and environmental impacts of cold fronts over KwaZulu-Natal and the adjacent interior of southern Africa", S AFR J SCI, 96(11-12), 2000, pp. 602-608

Abstract

Approximately 43 cold front events occur annually over KwaZulu-Natal (average of 45 years' data). Despite this high incidence, the regional climatic associations and environmental implications of southern African cold front events have not been examined in detail. To this end, a three-phase climatemodel associated with the passage of cold fronts over the province is presented. The effects of altitude and continentality on winter ambient air temperature and lapse rates during the passage of cold fronts are the primary focus of the study. Some of the associated environmental implications are also discussed. It was found that lapse rates were markedly different duringthe various cold front phases. Further, the effect of continentality and altitude had a significant influence on ambient air temperatures during suchclimatic phenomena. Cold fronts are important climatological controls on smoke concentrations in urban environments and an understanding of contemporary climatological patterns associated with such circulation systems over KwaZulu-Natal may assist in modelling palaeoclimates.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 13:28:59