IRRADIANZA SOLAR Y TEMPERATURA DEL AIRE SUPERFICIAL EN UNA ATMÓSFERA ESTÁTICA
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Revista Boliviana de Física
Abstract
De la observación de varios registros meteorológicos de nuestras estaciones, se ha determinado un típico corrimiento de los máximos de temperatura diarios con respecto al máximo de la radiación solar diaria. Estos oscilan entre 3 y 5 horas, es decir, que mientras el máximo de radiación solar se presenta alrededor del medio día, el máximo de la temperatura ambiental superficial se sitúa alrededor de las cuatro de la tarde. Paralelamente el movimiento del aire inducido por el gradiente térmico en la superficie da lugar a un viento cuya máxima intensidad se sitúa en correspondencia con el máximo de la temperatura superficial. De esta manera, en condiciones de una atmósfera estática, los tres parámetros meteorológicos más importantes como la radiación solar, la temperatura y la velocidad del viento se correlacionan estrechamente. En el presente artículo se muestra la relación entre estos parámetros meteorológicos de acuerdo a principios básicos de la física térmica y de fluidos.
Using data obtained from several meteorological stations we constructed a typical shift of the daily maxima of temperature in relation to the maximum daily solar radiation, which ranges between 3 and 5 hours, i.e., while the solar radiation maximum appears (around noon), the maximum of the superficial environmental temperature takes place around four o'clock in the afternoon. Simultaneously, the movement of the air induced by the thermal gradient on the surface leads to a wind with an intensity maximun that coincides with the maximum of the superficial temperature. Thus in static environment conditions solar radiation, temperature and wind speed are closely correlated. In the present article, the relationship between these meteorological parameters appears to be in accordance with the basic principles of thermal and fluids physics.
Using data obtained from several meteorological stations we constructed a typical shift of the daily maxima of temperature in relation to the maximum daily solar radiation, which ranges between 3 and 5 hours, i.e., while the solar radiation maximum appears (around noon), the maximum of the superficial environmental temperature takes place around four o'clock in the afternoon. Simultaneously, the movement of the air induced by the thermal gradient on the surface leads to a wind with an intensity maximun that coincides with the maximum of the superficial temperature. Thus in static environment conditions solar radiation, temperature and wind speed are closely correlated. In the present article, the relationship between these meteorological parameters appears to be in accordance with the basic principles of thermal and fluids physics.
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Vol. 14, No. 14