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SM Journal of Biometrics & Biostatistics

Characteristics of Photosynthetic Active Radiation (PAR) Through Statistical Analysis at Larnaca, Cyprus

[ ISSN : 2573-5470 ]

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Received: 25-May-2017

Accepted: 09-Jun-2017

Published: 16-Jun-2017

Research Article | Volume 2 - Issue 2 | Article DOI :

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Pashiardis S1, Kalogirou SA 1* and Pelengaris A2

1Department of Mechanical Engineering and Materials Science and Engineering Cyprus University of Technology, Limassol, Cyprus

2Department of Cyprus Public Works, Ministry of Transport Communications and Works, Strovolos Avenue 165, 2048 Strovolos, Cyprus

Corresponding Author:

SA Kalogirou, Department of Mechanical Engineering and Materials Science and Engineering Cyprus University of Technology, Limassol, Cyprus; Tel: +357-2500-2621

Keywords

Photosynthetic active radiation; Statistical analysis; Temporal and spatial variation; Modelling PAR; Cyprus

Abstract

Measurements of Photosynthetically Active Radiation (PAR) and global solar radiation at Larnaca (a coastal site in Cyprus) during the period 3013-2015 were used to investigate the seasonal characteristics of PAR and PAR/G ratio (PAR fraction or fFEC). PAR showed seasonal features with higher values in summer and lower values in winter. The annual mean values of PPFD and fFEC being 40.3 mol m-2 d-1 and 2.03 mol M J-1, respectively. Monthly average daily PAR increased from 19.1 mol m-2 d-1 (in December) to 59.6 mol m-2 d-1 (in June).The monthly daily average of fFEC remained almost constant throughout the year at Larnaca. The spatial variability of PAR was also investigated using measurements from other four sites with different climate characteristics. The annual mean daily PAR value ranged between 31.7 to 40.0mol m-2 d-1. The highest values are recorded in the coastal stations (Larnaca and Paralimni). The annual average value of fFEC at the five observation sites ranged from 1.82 mol MJ-1 to 2.03 mol MJ-1, in accordance to what is observed in most parts of the world. The highest appeared in the coastal sites of Larnaca and Paralimni due to the presence of high water vapour atmospheric concentrations. Elevation plays a significant role on the values of the above variables. As a general trend, fFEC followed the order Clear

Citation

Pashiardis S, Kalogirou SA and Pelengaris A. Characteristics of Photosynthetic Active Radiation (PAR) Through Statistical Analysis at Larnaca, Cyprus. SM J Biometrics Biostat. 2017; 2(2): 1009.