The aim of this project is to study Atmospheric Linke turbidity index over Deukhuri Valley, Dang (27°50’32.2" N, 82°45’41.9" E and 445 m a. s. l.). The atmospheric Linke Turbidity index is calculated from solar radiation measurements of NASA satellite for period of 4 years (2015, 2016, 2017, 2018). The annual average clearness index (KT ), Linke turbidity index (LT ) and visibility are 0.55 ± 0.12, 2.5 ± 1.1 and 10.4 ± 3.8 km respectively. Atmospheric Linke turbidity index is used on agriculture, hydrology, climate change and energy harvesting. In study period, number of good days (visibility > 15 km) and number of bad days (visibility < 5 km) are found to be 188 and 94 respectively. This research work is beneficial for the further identification, impact and analysis of atmospheric turbidity at different places.
The main objective of the study is to estimate direct solar radiation (IB) and diffuse solar radiation (ID) on Bode, Bhaktapur (27.68° N, 85.39° E, 1297 m a. s. l.) for a period of one year (2013). Daily data of Aerosol optical depth (AOD), total ozone column are derived from NASA website. The maximum and minimum monthly average of diffuse solar radiation values were found 318±95 W/m2 in April and 108 ± 20 W/m2 in August respectively. The maximum and minimum monthly average of direct solar radiation values were found 975±74 W/m2 in February and 748 ± 126 W/m2 in March respectively. The annual average of diffuse solar radiation and direct solar radiation are found 216 ± 88 W/m2 and 864 ± 125 W/m2 respectively. Result of this research work is beneficial for the further identification, impact and analysis of direct solar radiation diffuse solar radiation at different places.
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