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Die Datengrundlage dieser Arbeit bilden Messungen in Wolken mit einem scannenden Radar. Zur Analyse der wolkenphysikalischen Prozesse werden neuartige Verfahren entwickelt, die (i) die getrennte Betrachtung von Teilprozessen in der Schmelzschicht ermöglichen und die es (ii) erlauben, mittels einer neuen, in dieser Arbeit eingeführten Größe (""residuale Geschwindigkeit""), kleinräumige Fluktuationen in Wolken zu identifizieren und ihre dynamische Entwicklung zu beschreiben.

residuale Geschwindigkeit --- Wolken --- Radar --- Schmelzschicht --- interne Schwerewellen

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This work studies the interaction of natural aerosol with clouds for two different weather regimes in Central Europe. One model study highlights the impact of sea salt aerosol on postfrontal, convective cumulus clouds. The other study examines the influence of mineral dust aerosol on the formation of cirrus clouds during a mineral dust outbreak on 3 April 2014.

Mineralstaub --- Modellstudie --- Mineral dust --- model study --- Wolken --- Clouds --- Cirrus --- Aerosol

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By using COSMO-ART, highly resolved process study simulations for 2-3 July 2016 are conducted to assess the aerosol effect on the meteorological conditions of southern West Africa. The meteorological phenomenon Evening Monsoon Flow Enhancement (EMFE) is identified as highly susceptible to the aerosol direct effect, leading to a spatial shift of the EMFE front. In a second aerosol feedback chain the aerosol variation leads to a temporal shift of the stratus-to-cumulus transition.

COSMO-ART --- Wolken --- Aerosol --- Westafrikanischer Monsun --- clouds --- West African monsoon --- Nächtlicher Stratus --- COSMO-ARTaerosol --- nocturnal stratus

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This work provides new insights into macro- and microphysical properties of Arctic mixed-phase clouds: first, by comparing semi-idealized large eddy simulations with observations; second, by dissecting the influences of different surface types and boundary layer structures on Arctic mixed- phase clouds; third, by elucidating the dissipation process; and finally by analyzing the main microphysical processes inside Arctic mixed-phase clouds.

microphysical processes in clouds --- Arktische Mischphasenwolken --- Mikrophysikalische Prozesse in Wolken --- cloud dissipation process --- surface heterogeneities --- Oberflächeneinfluss --- Wolkenauflösung --- Arctic mixed-phase clouds

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Dieux semitiques --- Goden [Semitische ] --- Gods [Semitic ] --- 291.212.5 --- Storm gods --- -Gods, Semitic --- Semitic gods --- Semites --- Gods --- Verering van atmosferische fenomenen: bliksem; donder; regen ; wolken; wind; meteorolatrie --- Religion --- Middle East --- Religion. --- Gods, Semitic. --- 291.212.5 Verering van atmosferische fenomenen: bliksem; donder; regen ; wolken; wind; meteorolatrie --- Gods, Semitic --- Storms (in religion, folk-lore, etc.)