Medición y predicción de la radiación solar global UV-B bajo cielos claros y sin nubes
Fecha
2010
Autores
Wright Gilmore, Jaime
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Editor
Universidad Nacional (Costa Rica)
Resumen
Se presentan mediciones experimentales de la radiación solar ultravioleta en el rango B del espectro solar (UV-B) y la radiación ultravioleta en el rango total RUV (UV-A+UV-B) en días claros y sin nubes en Heredia, Costa Rica. Se utilizó una radiómetro UV-B, que mide la radiación solar en el rango espectral 280-315 nm, y un radiómetro RUV, que mide la radiación solar en el rango espectral 280-385 nm. La dependencia entre entre UV-B y RUV también fue investigada, y se encontró un excelente grado de asociación entre ambas. Además se detalló que UV-B representa solamente un 5,4% de RUV, a pesar de que UV-B es mil veces más potente que UV-A. Los valores de UV-B medidos in situ fueron comparados con los valores predichos por un modelo atmosférico espectral, el cual utiliza como datos de entrada: la hora del día, la latitud, la altitud, el albedo superficial, la distancia Tierra-Sol, la turbiedad atmosférica y el ozono atmosférico. La comparación entre los valores medidos y predichos dio resultados satisfactorios.
We present experimental measurements of solar radiation in the ultraviolet range of the solar spectrum B (UV-B) and total UVR ultraviolet radia-tion (UV-A + UV-B) for clear and cloudless days in Heredia, Costa Rica. We used an ultraviolet UV-B radiometer, which measures the solar radiation in the spectral range 280-315 nm and an ultraviolet UVR radiometer, which measures the solar radiation in the spectral range 280-385 nm. Dependencies between UVR and UV-B was also investigated, and found an excellent grade of association between them. Was also found that UV-B represents only 5.4% of UVR, while UV-B is a thousand times more powerful than UV-A. The values of UV-B measured in situ were compared with the values predicted by a spectral atmospheric model, which uses as input data: time of day, latitude, altitude, surface albedo, Earth-Sun distance, atmospheric turbidity and atmospheric ozone. Comparisons between the predicted and measured values gave satisfactory results.
We present experimental measurements of solar radiation in the ultraviolet range of the solar spectrum B (UV-B) and total UVR ultraviolet radia-tion (UV-A + UV-B) for clear and cloudless days in Heredia, Costa Rica. We used an ultraviolet UV-B radiometer, which measures the solar radiation in the spectral range 280-315 nm and an ultraviolet UVR radiometer, which measures the solar radiation in the spectral range 280-385 nm. Dependencies between UVR and UV-B was also investigated, and found an excellent grade of association between them. Was also found that UV-B represents only 5.4% of UVR, while UV-B is a thousand times more powerful than UV-A. The values of UV-B measured in situ were compared with the values predicted by a spectral atmospheric model, which uses as input data: time of day, latitude, altitude, surface albedo, Earth-Sun distance, atmospheric turbidity and atmospheric ozone. Comparisons between the predicted and measured values gave satisfactory results.
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RADIACIÓN ULTRAVIOLETA TOTAL RUV, RADIACIÓN UV-B, MODELO ATMOSFÉRICO ESPECTRAL, TOTAL UVR ULTRAVIOLET RADIATION, UV-B RADIATION, ATMOSPHERIC SPECTRAL MODEL, ESPECTRO DE LA LUZ, ATMÓSFERA, OZONO, AEROSOLES, HEREDIA (COSTA RICA)