A new model for estimating diffuse solar radiation in Italy from clearness index and minimum air mass

1990 ◽  
Vol 7 (5) ◽  
pp. 549-553 ◽  
Author(s):  
S. Coppolino
Keyword(s):  
Solar Radiation ◽  
Clearness Index ◽  
Air Mass ◽  
New Model ◽  
Diffuse Solar Radiation

Estimation of Diffuse Solar Radiation from Clearness Index for Multan, Southern Punjab, Pakistan

2016 ◽  
Vol 12 ◽  
pp. 441-444
Author(s):  
M. Tanweer ◽  
◽  
Firoz Ahmad ◽  
Zaheer Uddin ◽  
Saif Rehman ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Clearness Index ◽  
Diffuse Solar Radiation

Correlation of diffuse solar radiation with air mass

1988 ◽  
Vol 5 (1) ◽  
pp. 99-102 ◽  
Author(s):  
M.D.C. Doyle ◽  
A.S. Sambo
Keyword(s):  
Solar Radiation ◽  
Air Mass ◽  
Diffuse Solar Radiation

Evaluation of diffuse solar radiation models in Northern China: New model establishment and radiation sources comparison

2017 ◽  
Vol 103 ◽  
pp. 708-720 ◽  
Author(s):  
Fei Cao ◽  
Huashan Li ◽  
Tian Yang ◽  
Yan Li ◽  
Tianyu Zhu ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Northern China ◽  
New Model ◽  
Diffuse Solar Radiation ◽  
Radiation Sources

scholarly journals Analysis of ratio of global to extra-terrestrial radiation (clearness index) at some tropical locations in India

2017 ◽  
Vol 21 (3) ◽  
pp. 1379-1387
Author(s):  
Shanmugham Ravichandran ◽  
Jebamani Rathnaraj
Keyword(s):  
Solar Radiation ◽  
South India ◽  
Correlation Equations ◽  
Clearness Index ◽  
Diffuse Solar Radiation ◽  
Daily Average ◽  
Proposed Model ◽  
Performance Statistics ◽  
Term Data

An attempt has been made to analyze and evaluate the daily average clearness index (Hg/H0) in terms of daily average cloudiness index (Hd/H0) for three tropical locations in South India (Chennai, Trivandrum, and Visakapatnam). Long term data (15 years, 1993-2007) of measured daily average global and diffuse solar radiation for the locations have been used for this study. Two correlation equations (linear and polynomial) for each location have been developed for clearness index in terms of cloudiness index and found its validity. Performance statistics of the model has been done and applicability of the model is done by comparing the performance statistics with the existing models. It has been found that the proposed model has least error compared with the existing models.

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