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Résumé En se limitant au cas du ciel clair, la luminance énergétique de courtes longueurs d'onde en un point du ciel a été paramétrisée empiriquement en fonction de l'angle zénithal du soleil (ou de la masse atmosphérique) et du coefficient de turbidité d'Angström, après normalisation par...
Abstract Irradiance data obtained over a long period at Vancouver and Toronto, Canada, and covering a range of slope orientations are used to validate four models that estimate either the direct or diffuse solar irradiances for inclined surfaces. Evaluations are initially performed for daily and...
Abstract An intercomparison of the Väisälä MicroCora system used in the Automated Shipboard Aerological Program (ASAP) and the Atmospheric Environment Service upper‐air system (GMD/ADRES) was conducted in May‐June 1983. Thirty‐three paired ascents were made. The ASAP system dry‐bulb temperatures...
Abstract The influences of surface fluxes and convective precipitation are investigated for two 36‐h periods of cyclogenesis over the northeastern Pacific Ocean. Three methods are tested of specifying the fraction of moisture supply that produces convective precipitation in a modified form of...
Abstract As part of an extensive survey of the temperature and currents of Lake Erie, a vertical automatic profiling system (EVAPS) was deployed for three days in August 1980. This system consisted of acoustic current meters, temperature sensors and a pressure gauge. The buoyant sensor package...
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