ANALYSIS OF MONTHLY AVERAGE SOLAR-RADIATION AND BRIGHT SUNSHINE FOR DIFFERENT THRESHOLDS AT CAPE-CANAVERAL, FLORIDA

Authors
GUEYMARD C
Citation
C. Gueymard, ANALYSIS OF MONTHLY AVERAGE SOLAR-RADIATION AND BRIGHT SUNSHINE FOR DIFFERENT THRESHOLDS AT CAPE-CANAVERAL, FLORIDA, Solar energy, 51(2), 1993, pp. 139-145
Citations number
11
Categorie Soggetti
Energy & Fuels
Journal title
Solar energy → ACNP
ISSN journal
0038092X
Volume
51
Issue
2
Year of publication
1993
Pages
139 - 145
Database
ISI
SICI code
0038-092X(1993)51:2<139:AOMASA>2.0.ZU;2-B
Abstract
Data for beam, global horizontal, and global normal radiation measured at Cape Canaveral were analyzed for the period 1986-1991. Some empiri cal correlations between these parameters are proposed. A detailed ana lysis of the beam irradiance data also led to the derivation of sunshi ne fractions corresponding to different radiation thresholds. It is sh own that the current WMO threshold of 120 W/m2 Corresponds to optimal radiation/sunshine correlations. Finally, improved monthly irradiation empirical fits using sunshine data are proposed.