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Characterization of meteorological parameters, solar radiation and effect of clouds at two antarctic sites, and comparison with satellite estimates Translated title: Caracterización de parámetros meteorológicos, radiación solar y efecto de las nubes en dos sitios antárticos, y comparación con estimaciones satelitales

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      Abstract

      The analysis of measurements of daily mean temperature, daily mean relative humidity and daily total solar irradiation for the period 1979-1985, at the Antarctic stations Almirante Brown (64.9ºS, 62.9ºW, 10m a.s.l., West of Antarctic Peninsula), and BelgranoII (77.9ºS, 34.6ºW, 250m a.s.l., East of Antarctic Peninsula) is presented. A short-term characterization of monthly averages was established. Typical temperatures for summer and winter were 2ºC and -7ºC respectively at Brown, and -2ºC and -20ºC at BelgranoII. Relative humidity was always above 60% at both stations. Both measured parameters enter also as input variables in model calculations of the equivalent clear-sky daily total irradiation for each day, to determine the effective cloud transmittance of solar radiation. The effect of cloudiness was stronger at Brown, where an average cloud transmittance of 49% was determined, while it was of 71% at BelgranoII. Average daily irradiation of 27.4MJ/m² in December at BelgranoII is within the highest reported world-wide. Also, some days show increases in the daily irradiation over 20% than that expected for clear-sky conditions. Antarctic solar irradiation levels are considerably higher than in the Arctic. Ground-based data are compared with the satellite database from NASA Surface Meteorology and Solar Energy Data Set.

      Translated abstract

      Se presenta el análisis de mediciones de temperatura media diaria, humedad relativa media diaria e irradiación solar total diaria, realizadas en el periodo 1979-1985 en las Bases Antárticas Almirante Brown (64.9ºS, 62.9ºO, 10m s.n.m., Oeste de Península Antártica) y BelgranoII (77.9ºS, 34.6ºO, 250m s.n.m., Este de Península Antártica). Se estableció una caracterización de corto plazo sobre medias mensuales. Las temperaturas típicas en verano e invierno fueron 2ºC y -7ºC respectivamente en Brown, y -2ºC y ‑20ºC en BelgranoII. La humedad relativa fue siempre sobre 60% en ambas estaciones. Estos dos parámetros entran como variables en cálculos de la irradiación solar diaria equivalente a cielo despejado, para determinar la transmitancia efectiva de radiación solar por nubes. El efecto de nubes fue mayor en Brown, con transmitancia efectiva media de 49%, respecto del 71% en BelgranoII. La irradiación media de 27.4MJ/m² en diciembre en BelgranoII es de las más altas registradas en el mundo. Asimismo, algunos días muestran incrementos de irradiación por sobre un 20% de la esperada para cielo despejado. La irradiación solar media en Antártida es considerablemente mayor que la registrada en el Ártico. Se comparan las mediciones con datos satelitales del Surface Meteorology and Solar Energy Data Set/NASA.

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      • Record: found
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      • Article: not found

      Optical Properties of Aerosols and Clouds: The Software Package OPAC

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        • Record: found
        • Abstract: not found
        • Article: not found

        An introduction to solar radiation

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          • Record: found
          • Abstract: not found
          • Article: not found

          Atmospheric Turbidity in the Polar Regions

           Glenn Shaw (1982)
            Bookmark

            Author and article information

            Affiliations
            CONICET-Universidad Nacional de Rosario Instituto de Física de Rosario Grupo de Energía Solar Argentina
            San Miguel Buenos Aires Servicio Meteorológico Nacional Red Solarimétrica Argentina
            Universidad Nacional de Rosario Facultad de Ciencias Exactas, Ingeniería y Agrimensura Argentina
            Capital Federal UCA-CONICET Programa de Estudios de Procesos Atmosféricos en el Cambio Global (PEPACG) Argentina
            Contributors
            Role: ND
            Role: ND
            Role: ND
            Role: ND
            Journal
            meteoro
            Meteorologica
            Meteorologica
            Centro Argentino de Meteorólogos (Ciudad Autónoma de Buenos Aires, , Argentina)
            1850-468X
            December 2005
            : 30
            : 1-2
            : 27-40
            S1850-468X2005000100002

            This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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            Figures: 0, Tables: 0, Equations: 0, References: 42, Pages: 14
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            Product Information: SciELO Argentina
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