Open AccessStudy of Affecting Factors of Meteorological Parameters on Solar Radiation on Pokhara
Author(s) -
Prakash M. Shrestha,
Jeevan Regmi,
Usha Joshi,
Khem N. Poudyal,
Narayan P. Chapagain,
Indra B. Karki
Publication year - 2020
Publication title -
the himalayan physics
Language(s) - English
Resource type - Journals
ISSN - 2542-2545
DOI - 10.3126/hp.v9i01.40154
Subject(s) - pyranometer , environmental science , radiation , atmospheric sciences , correlation coefficient , solar energy , meteorology , physics , mathematics , statistics , optics , biology , ecology
Solar radiation data are of great signicance for solar energy systems. This study aimed to estimate monthly and seasonal average of daily global solar radiation on a horizontal surface in Pokhara (Lat.:28.21o N, Long.: 84o E and alt. 827 m above sea level), Nepal, by using CMP6 pyranometer in 2015. As a result of this measurement, monthly and yearly mean solar radiation values were 20.37 ±5.62 MJ/m2/ day in May, 11.37 ± 2.38 MJ/m2/ day in December and 16.82 ±5.24 MJ/m2/ day respectively. Annual average of clearness index and extinction coefficient are 0.51±0.14 and 0.53±0.31 respectively. There is positive correlation of maximum temperature and negative correlation of with global solar radiation.