<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Based on measurements of the diffused and direct solar radiation intensity, the authors investigate the atmospheric lucidity and its variations that are characteristic of the Latvian conditions. They also consider the dependence of diffused radiation on the nebulosity. In the work it was established that the atmospheric lucidity in Latvia is usually in the range of 0.77±0.05, with only minor changes, so in the calculations it was assumed constant. The diffused solar radiation intensity was found to increase under medium nebulosity and to decrease at high its level. Since this dependence is also influenced by the type of clouds, for more precise calculations further research is needed.</p></abstract>

Based on measurements of the diffused and direct solar radiation intensity, the authors investigate the atmospheric lucidity and its variations that are characteristic of the Latvian conditions. They also consider the dependence of diffused radiation on the nebulosity. In the work it was established that the atmospheric lucidity in Latvia is usually in the range of 0.77±0.05, with only minor changes, so in the calculations it was assumed constant. The diffused solar radiation intensity was found to increase under medium nebulosity and to decrease at high its level. Since this dependence is also influenced by the type of clouds, for more precise calculations further research is needed.

Evaluation of Atmospheric Lucidity and Diffused Radiation

Latvian University of Agriculture, 2 Liela Str., Jelgava, LATVIA

Institute of Physical Energetics, 21 Aizkraukles Str., Riga, LATVIA

Riga Technical University, 16/20 Azenes Str., Riga, LATVIA

Latvian Journal of Physics and Technical Sciences

{"article-title":"Evaluation of Atmospheric Lucidity and Diffused Radiation"}

Based on measurements of the diffused and direct solar radiation intensity, the authors investigate the atmospheric lucidity and its variations that are...

Evaluation of Atmospheric Lucidity and Diffused Radiation

Published Online: Dec 31, 2010

Page range: 40 - 46

DOI: https://doi.org/10.2478/v10047-010-0029-7

Keywords
solar energy, direct radiation, diffused radiation, atmospheric lucidity, nebulosity

This content is open access.

Evaluation of Atmospheric Lucidity and Diffused Radiation

Published Online: Dec 31, 2010

Page range: 40 - 46

DOI: https://doi.org/10.2478/v10047-010-0029-7

Keywordssolar energy, direct radiation, diffused radiation, atmospheric lucidity, nebulosity

This content is open access.

Keywords
solar energy, direct radiation, diffused radiation, atmospheric lucidity, nebulosity