Ms. Giulia D'Angiolini Profile

Giulia D'Angiolini

at Univ degli Studi di Roma Tor Vergata

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 19 August 2010 Paper

Correlations for a Mediterranean cloud cover model

Angelo Spena, Giulia D'Angiolini, Cecilia Strati

Proceedings Volume 7773, 77730V (2010) https://doi.org/10.1117/12.859839

KEYWORDS: Clouds, Solar radiation, Atmospheric modeling, Solar radiation models, Climatology, Data modeling, Meteorology, Solar energy, Environmental sensing, Buildings

Read Abstract +

Relationship between sky cloud cover and solar radiation is presented in order to give information about solar radiation attitude varying with cloudiness, useful to optimize solar devices. Meteorological and solar data were recorded by Environmental Technical Physic Laboratories, at University of Rome Tor Vergata from April 15th 2009 to May 31th 2010. Those data were associated to hourly cloud observation recorded in the same site in order to calculate the ratio of global radiation at total cloud amount (N okta) G(N) to global radiation at cloudless sky G(0). The comparison between Kimura and Stephenson (1967) work, and Kasten and Czeplak (1980) parameterization were evaluated to characterize Tor Vergata's site. The model of clear sky condition proposed by Duffie and Beckman (1980), Spena (1996), and Duchon and O'Malley (1998) were used to determinate the transmission coefficient for global radiation at cloudless sky. Monthly and seasonal formulas has been developed using power and polynomial functions: correlation coefficients were shown for each trend. The correlation coefficient R²=0,9 showed that the best approximation is given by polynomial function. The results has indicated that the curve shape of G(N)/G(0) ratio has a maximum for N=3, almost half cloud cover condition, for Rome's latitude. The meaning for this behavior is that global radiation grow with scattered radiation growth. This correlation represent a new element useful to characterize Rome's site and to compare radiation trend with others of different latitudes site, and climate.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years