AVAILABILITY OF SOLAR PHOTOSYNTHETICALLY ACTIVE RADIATION.

K. C. Ting, G. A. Giacomelli

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

Experiments have been conducted to determine the correlations between the available hourly and daily photosynthetically active radiation (PAR) and total solar radiation. PAR was measured in the photon flux density unit of mol s** minus **1 m** minus **2 and total radiation was in the radiant flux density of W m** minus **2. Regression equations are presented in this paper for two purposes: (a) to show the predictability of PAR using available total solar radiation data, and (b) to provide empirical equations for estimating direct and diffuse PAR based on total radiation values.

Original languageEnglish (US)
Pages (from-to)1453-1457
Number of pages5
JournalTransactions of the American Society of Agricultural Engineers
Volume30
Issue number5
StatePublished - Sep 1 1987
Externally publishedYes

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)

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