6533b829fe1ef96bd128ac94
RESEARCH PRODUCT
An analysis of direct solar transmittance and atmospheric turbidity in the Mediterranean climatic belt
S. TrapaniS. BarbaroAldo OrioliC. GiaconiaG. Cannistrarosubject
Mediterranean climateMeteorologySkymedia_common.quotation_subjectGeneral EngineeringTransmittanceEnvironmental scienceDirect solar radiationTurbiditySolar transmittanceAtmospheric sciencesDegree (temperature)media_commondescription
Abstract The empirical model developed by King and Buckius for the direct transmission in clear sky is applied to hourly data of two Yugoslav locations exhibiting typical meteoclimatic characteristics common to the whole Mediterranean belt. The occurrence of “very clear”, “clear” and “very hazy” hours, after the usually accepted definitions, is determined and discussed. The degree of accuracy of the previsional model is investigated performing the comparison with the corresponding values obtained directly by energetic procedure. A general overestimate of the transmittance is experienced with notable deviations in meteorological conditions affected by the presence of dense clouds which behave as screens to the direct solar beam and which indeed the model neglects. Better results have been obtained testing the methodology by reduced samples, i.e. excluding hourly data with high experimental values of the ratio diffuse/global radiation, or adopting average daily values.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1989-01-01 | Solar & Wind Technology |