Description: Das Projekt "ARTIST: Studie zur Wechselwirkung von Strahlung und Turbulenz (ARTIST)" wird vom Umweltbundesamt gefördert und von GKSS-Forschungszentrum Geesthacht, Institut für Atmosphärenphysik durchgeführt. The ARTIST programme aims to improve the understanding and formal description of the radiative and thermodynamic interaction between Arctic clouds and sea-ice. For this purpose the energy fluxes within the atmosphere and at the surface of the polar ocean as well as the cloud physical properties will be investigated by direct field measurements, aircraft and satellite remote sensing and by numerical modelling. ARTIST will assess the effects of clouds and Arctic Haze on the radiative fluxes at the sea surface and within the atmospheric column for various atmospheric states and different lower boundary conditions. Major emphasis will be put on studies of stratiform clouds at low levels, their time and space variability and their radiation interaction with the sea ice. Improvement of actual radiation schemes are expected to be obtained from detailed considerations of the cloud optical thickness, liquid and solid water content as well as the particle size distributions in clouds. Furthermore the parametrisations of the air-sea exchanges of heat, momentum and water vapour and of the vertical turbulent fluxes within the Arctic boundary layer will be improved by measurements and model experiments. For the latter the ARTIST data will provide initial and boundary conditions and they will also serve to validate experiments by which the thermodynamics and dynamics of the cloudy boundary layer over the ice-covered ocean are studied. Measurements will be synchronized with the overpasses of suitable satellites as much as possible to test and to improve retrieval algorithms of sea surface and atmospheric properties for passive and active microwave as well as for visible and infrared channels.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Wolkenbildung ? Geesthacht ? Wolke ? Bewölkung ? Gerinne ? Mikrowellen ? Wasserstraße ? Kombinationswirkung ? Thermodynamik ? Wasserdampf ? Partikelgrößenverteilung ? Nebel ? Satellit ? Eis ? Strahlung ? Atmosphärische Wissenschaften ? Arktis ? Meereis ? Luftfahrzeug ? Mathematisches Modell ? Meeresoberfläche ? Daten ? Modellversuch ? Studie ? Dunst ? Wassergehalt ? Energie ? Wirkungsanalyse ? Wirkungsforschung ? Feldstudie ? Meeresgewässer ? Modellierung ? Satellitenfernerkundung ? Grenzschicht ? Turbulenz ? Fernerkundung ? Atmosphäre ? Eismeer ? Polarmeer ? Arktische-Wolke ?
Region: Schleswig-Holstein
Bounding box: 9.75° .. 9.75° x 54.2° .. 54.2°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1997-11-01 - 2000-10-31
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