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Understanding Variations in Photosynthetically Active Radiation (PAR) Values

Learn why PAR values fluctuate with changes in sun zenith angle. Typically, PAR decreases as the angle increases, with a notable 50% drop within an hour. An outlier, potentially caused by cloud cover, can impact data accuracy.

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Understanding Variations in Photosynthetically Active Radiation (PAR) Values

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  1. Group 2: PAR Values from Ed

  2. Why PAR varies? PAR values generally decrease with increased sun zenith angle. During 1-hour, PAR almost drops 50%. There is an outlier (I think), which may be due to cloud.

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