Direct solar radiation measurements, carried out from June 2001 to October 2001 in a site in South Italy, have been analysed. This site is characteristic of a continental area but it can be affected by the intrusion of marine and dust particles. Solar irradiance was measured using a high-resolution spectroradiometer, working in the visible range (400–800 nm), collecting about 500 spectra under cloudless conditions. From the aerosol optical depths we estimated the Angström turbidity parameters, by means of a least-square fitting procedure. Finally, a Twomey modified inversion technique allowed us to estimate the aerosol size distribution, obtaining mostly two-modal functions. Integrating the second mode of the aerosol size distribution, it was surprising to find a high correlation with the β parameter only for data corresponding to low turbidity conditions.

Seasonal Variation of aerosols properties in South Italy: a study on aerosol optical depths, Angstrom turbidity parameters and aerosol size distributions

ESPOSITO, Francesco;SERIO, Carmine
2004

Abstract

Direct solar radiation measurements, carried out from June 2001 to October 2001 in a site in South Italy, have been analysed. This site is characteristic of a continental area but it can be affected by the intrusion of marine and dust particles. Solar irradiance was measured using a high-resolution spectroradiometer, working in the visible range (400–800 nm), collecting about 500 spectra under cloudless conditions. From the aerosol optical depths we estimated the Angström turbidity parameters, by means of a least-square fitting procedure. Finally, a Twomey modified inversion technique allowed us to estimate the aerosol size distribution, obtaining mostly two-modal functions. Integrating the second mode of the aerosol size distribution, it was surprising to find a high correlation with the β parameter only for data corresponding to low turbidity conditions.
File in questo prodotto:
File Dimensione Formato  
AE_2004.pdf

non disponibili

Tipologia: Documento in Post-print
Licenza: DRM non definito
Dimensione 324.11 kB
Formato Adobe PDF
324.11 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11563/16534
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 29
  • ???jsp.display-item.citation.isi??? 25
social impact