Broad-Band Atmospheric Turbidity Indexes in Camagüey

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Published: Jul 2, 2014
Keywords:
Turbidity, solar radiation.

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MSc. Ismael Pomares Ponce
Centro Meteorológico de Camagüey
Dr. Eudimio Martínez Chapman
Centro de Contaminación Atmosférica, Instituto de Meteorología
MSc. Nélida Varela Ledesma
Delegación del CITMA, Camagüey

Abstract

The Linke, Ångström and Unsworth-Monteith broadband atmospheric turbidity indices have been determined and analyzed in Camagüey, Cuba in the period 1971-2012. Manual actinometrics observations of normal direct solar irradiance taken at visible and clouds free solar disk in the Camagüey Meteorological Center (21.4o N, 77.85o W) were used. During the diurnal course turbidity higher values were found at noon. Monthly averages showed the maximum in summer, in July, where the Unsworth-Monteith turbidity coefficient, Linke turbidity factor and Angstrom’s turbidity coefficient reached values of 0.31, 0.2 and 4.17 respectively, while the minimum values were reached in January with 0.18, 0.1 and 3.07. Interdependence between turbidity indices in their daily evolution were found with correlations coefficients between pairs of them close to 1. In the multi-year time series maxima attributed to the eruptions of El Chichon and Pinatubo volcanoes was distinguished. Increases and decreases in turbidity were explained, among other things, by the influence of environmental factors and as a result of economic activity in the territory. Since 2002 a significant increase in turbidity was observed.

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How to Cite
Pomares PonceM. I., Martínez ChapmanD. E., & Varela LedesmaM. N. (2014). Broad-Band Atmospheric Turbidity Indexes in Camagüey . Revista Cubana De Meteorología, 20(2), 47-55. Retrieved from http://rcm.insmet.cu/index.php/rcm/article/view/171
Issue
Vol 20 No 2 (2014): Vol. 20, No. 2, julio - diciembre, 2014
Section
Original Articles

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