Search Results - "Seckmeyer, G"

The Solar Spectrum in the Atacama Desert by Cordero, R. R., Damiani, A., Seckmeyer, G., Jorquera, J., Caballero, M., Rowe, P., Ferrer, J., Mubarak, R., Carrasco, J., Rondanelli, R., Matus, M., Laroze, D.

“…The Atacama Desert has been pointed out as one of the places on earth where the highest surface irradiance may occur. This area is characterized by its high…”
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Case study showing that the tilt angle of photovoltaic plants is nearly irrelevant by Beringer, S., Schilke, H., Lohse, I., Seckmeyer, G.

“…What is the optimum tilt angle of photovoltaic plants in mid-latitudes? This question is of practical importance for the mounting of photovoltaic systems. The…”
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Comparing satellite- to ground-based automated and manual cloud coverage observations – a case study by Werkmeister, A, Lockhoff, M, Schrempf, M, Tohsing, K, Liley, B, Seckmeyer, G

“…In this case study we compare cloud fractional cover measured by radiometers on polar satellites (AVHRR) and on one geostationary satellite (SEVIRI) to…”
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Validation of spectral sky radiance derived from all-sky camera images – a case study by Tohsing, K, Schrempf, M, Riechelmann, S, Seckmeyer, G

“…Spectral sky radiance (380–760 nm) is derived from measurements with a hemispherical sky imager (HSI) system. The HSI consists of a commercial compact CCD…”
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Uncertainty of measurements of spectral solar UV irradiance by Bernhard, G., Seckmeyer, G.

“…Most investigations on the nature and effects of solar ultraviolet (UV) radiation at the Earth's surface require measurements of high accuracy combined with…”
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Estimating probability distributions of solar irradiance by Voskrebenzev, A., Riechelmann, S., Bais, A., Slaper, H., Seckmeyer, G.

“…In the presence of clouds the ability to calculate instantaneous spectral irradiance values is limited by the ability to acquire appropriate input parameters…”
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Measurements of spectral snow albedo at Neumayer, Antarctica by WUTTKE, S, SECKMEYER, G, KÖNIG-LANGLO, G

“…Spectral albedo in high resolution, from 290 to 1050 nm, has been measured at Neumayer, Antarctica, (70°39' S, 8°15' W) during the austral summer 2003/2004. At…”
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Aerosol effects on the UV irradiance in Santiago de Chile by Cordero, R.R., Seckmeyer, G., Damiani, A., Jorquera, J., Carrasco, J., Muñoz, R., Da Silva, L., Labbe, F., Laroze, D.

“…Santiago de Chile (33°27′ S–70°41′ W) is a mid-latitude city of 6 million inhabitants with a complicated surrounding topography. Aerosol extinction in Santiago…”
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Spectral radiance and sky luminance in Antarctica: a case study by Wuttke, S, Seckmeyer, G

“…Sky luminance and spectral radiance has been characterised at Neumayer, Antarctica for selected situations during the austral summer 2003/04. Luminance has…”
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Systematic long-term comparison of spectral UV measurements and UVSPEC modeling results by Mayer, B., Seckmeyer, G., Kylling, A.

“…For the evaluation of radiative transfer models and for investigations on the influence of parameters like aerosols or clouds on ground level UV irradiance, a…”
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Enhanced absorption of UV radiation due to multiple scattering in clouds: Experimental evidence and theoretical explanation by Mayer, B., Kylling, A., Madronich, S., Seckmeyer, G.

“…Measurements of spectral ultraviolet‐B irradiance under optically thick clouds show strongly enhanced attenuation by molecular and particulate absorbers. The…”
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Satellite retrievals of erythemal UV dose compared with ground-based measurements at northern and southern midlatitudes by McKenzie, R. L., Seckmeyer, G., Bais, A. F., Kerr, J. B., Madronich, S.

“…In recent years, estimates of UV radiation at the Earth's surface have been obtained from satellite retrievals. These retrievals have been compared with…”
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Comparison of atmospheric spectral radiance measurements from five independently calibrated systems by Pissulla, D, Seckmeyer, G, Cordero, R R, Blumthaler, M, Schallhart, B, Webb, A, Kift, R, Smedley, A, Bais, A F, Kouremeti, N, Cede, A, Herman, J, Kowalewski, M

“…A variety of instruments have been developed over the past 50 years to measure spectral radiance in absolute units at UV and visible wavelengths with high…”
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Transmittance of a cloud is wavelength-dependent in the UV-range: Physical interpretation by Kylling, A., Albold, A., Seckmeyer, G.

“…In the recently published GRL paper by Seckmeyer et al. [1996] an example of a cloud that has a wavelength dependent effect on the surface UV‐radiation is…”
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Possibilities to detect trends in spectral UV irradiance by GLANDORF, M, AROLA, A, BAIS, A, SECKMEYER, G

“…It is investigated how long-term UV trends can be assessed by analysing the longest time series of measured spectral UV irradiance in Europe, which have been…”
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Measurements of spectral solar UV irradiance in tropical-Australia by Bernhard, G., Mayer, B., Seckmeyer, G., Moise, A.

“…Measurements of global spectral irradiance in the UV and visible range were carried out during December 1995 and January 1996 in Townsville, Australia…”
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SUSPEN intercomparison of ultraviolet spectroradiometers by Bais, A. F., Gardiner, B. G., Slaper, H., Blumthaler, M., Bernhard, G., McKenzie, R., Webb, A. R., Seckmeyer, G., Kjeldstad, B., Koskela, T., Kirsch, P. J., Gröbner, J., Kerr, J. B., Kazadzis, S., Leszczynski, K., Wardle, D., Josefsson, W., Brogniez, C., Gillotay, D., Reinen, H., Weihs, P., Svenoe, T., Eriksen, P., Kuik, F., Redondas, A.

“…Results from an intercomparison campaign of ultraviolet spectroradiometers that was organized at Nea Michaniona, Greece, July 1–13, 1997, are presented…”
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Case study on the influence of inhomogeneous surface albedo on UV irradiance by Degünther, M., Meerkötter, R., Albold, A., Seckmeyer, G.

“…The influence of inhomogeneous surface albedo on UV irradiance is investigated for cloud free conditions using a recently developed 3‐dimensional radiative…”
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Assessment of four methods to estimate surface UV radiation using satellite data, by comparison with ground measurements from four stations in Europe by Arola, Antti, Kalliskota, S., den Outer, P. N., Edvardsen, K., Hansen, G., Koskela, T., Martin, T. J., Matthijsen, J., Meerkoetter, R., Peeters, P., Seckmeyer, G., Simon, P. C., Slaper, H., Taalas, P., Verdebout, J.

“…Four different satellite‐UV mapping methods are assessed by comparing them against ground‐based measurements. The study includes most of the variability found…”
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Increased ultraviolet radiation in New Zealand (45° S) relative to Germany (48° N) by Seckmeyer, G, McKenzie, R. L

“…A combination of spectral measurements made in Germany and New Zealand with the same spectroradiometer was used to show that in the New Zealand summer of…”
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