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Titolo:
Correlation fields for solar radiation in northeast Brazil
Autore:
Ceballos, JC; De Souza, JM; Dantas, ACT;
Indirizzi:
Inst Nacl Pesquisas Espaciais, CPTEC, BR-12630 Cachoeira Paulista, SP, Brazil Inst Nacl Pesquisas Espaciais Cachoeira Paulista SP Brazil BR-12630 razil Ctr Calculo, Fac Ingn, Montevideo, Uruguay Ctr Calculo Montevideo Uruguay r Calculo, Fac Ingn, Montevideo, Uruguay
Titolo Testata:
INTERNATIONAL JOURNAL OF CLIMATOLOGY
fascicolo: 7, volume: 21, anno: 2001,
pagine: 887 - 902
SICI:
0899-8418(20010615)21:7<887:CFFSRI>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENERGY;
Keywords:
correlation coefficients; factor analysis; northeast Brazil; solar irradiation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Ceballos, JC Inst Nacl Pesquisas Espaciais, CPTEC, BR-12630 Cachoeira Paulista, SP, Brazil Inst Nacl Pesquisas Espaciais Cachoeira Paulista SP Brazil BR-12630
Citazione:
J.C. Ceballos et al., "Correlation fields for solar radiation in northeast Brazil", INT J CLIM, 21(7), 2001, pp. 887-902

Abstract

Daily data of solar irradiation were used for analysing spatial decrease of correlation coefficients within northeast Brazil (a region extending overmore than 1.5 million km(2)). Available data of the regional climatological network correspond to typical distances between stations of 150 km and more. Two 3-month periods were chosen: March - April May (MAM) and August-September-October (ASO) 1975. It was found that spatial distribution of correlation for daily irradiations does not allow linear interpolations based on network data. However, factor analysis of 5-day means (particularly useful for agricultural pur-poses) allowed identification of four regions with internal similarity of time series behaviour, which is induced by the influence of typical meteorological systems. For this time-scale, correlation coefficients may be 0.7 and higher at rather long distances (in some cases, morethan 600 km), so that the climatological network can provide data for a detailed description of the regional distribution of mean irradiation. For shorter time and space scales, a too dense solarimetric network would be necessary, and the use of modem techniques using satellite monitoring over the region may be more appropriate. Copyright (C) 2001 Royal Meteorological Society.

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Documento generato il 21/09/20 alle ore 06:40:08