Description: Das Projekt "WADI+: Atmospheric Water vapour from the ground to the mesopause: Detection and Interpretation" wird/wurde gefördert durch: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung. Es wird/wurde ausgeführt durch: Universität Bern, Institut für Angewandte Physik.To obtain a reliable global picture of the changing atmosphere, a coupled observational / modeling system is required. Such a system must include a network of ground-based instrumentation of different techniques including balloon sondes, millimeter wave radiometers, lidar etc. to measure relevant parameters such as stratospheric water vapor and ozone. Water vapor, cloud liquid and water in the form of ice particles play many roles in atmospheric physics and - more generally - in earth sciences. In the troposphere water vapor is the most important greenhouse gas, in the middle atmosphere it contributes significantly to cooling processes and to ozone chemistry. Due to its long chemical lifetime it can also be used as a tracer to study dynamical processes in the atmosphere. The Institute of Applied Physics (IAP) at Bern together with the observatory at Zimmerwald acts as one of the primary stations of NDACC (Network for the Detection of Atmospheric Composition Change) and contributes with two microwave radiometers, one for ozone and the other one for water vapor. The ozone data series extends by now to more than 15 years with an unprecedented time resolution of a few minutes. The analysis of atmospheric phenomena at time scales from annual to as low as minutes is exceptional. With the middle atmospheric water vapor radiometer we dispose over a most successful instrument that can retrieve water vapor in the middle atmosphere. In collaboration with MeteoSwiss and their balloon soundings we aim at retrieving the water vapor distribution from the ground to the upper mesosphere. Our research contributes to the Swiss part of the Global Climate Observing System, GCOS, and of the Global Atmospheric Watch program, GAW, of the World Meteorological Organization, WMO. The scientific objectives of this research project are aimed at understanding the significance of the variability in atmospheric H2O at mid-latitudes over different time scales and to investigate the links between ozone and water vapor. A special aspect will be devoted to sudden stratospheric warmings and their effect on ozone and water vapor and relation to dynamical phenomena in the middle atmosphere. An important aspect is the participation in measurement campaigns in the tropics and in the arctic where ground based measurements of water vapor are almost inexistent. Further insight into the atmospheric processes shall be obtained by combining our data with atmospheric models in cooperation with other research teams.
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Wolkenbildung ? Wolke ? Bewölkung ? Ozon ? Messgerät ? Geografische Koordinaten ? Klimatologie ? Lidar ? Meteorologie ? Tracer ? Wasserdampf ? Schweiz ? Regenwasser ? Physik ? Radiometrie ? Gasförmiger Stoff ? Atmosphärische Wissenschaften ? Arktis ? Erdbeobachtung ? Technik ? Studie ? Klimamodell ? Tropengebiet ? Troposphäre ? Chemikalien ? Modellierung ? Daten ? Wirkung ? Mikrowellen ? Mesosphäre ? Messung ? Ballonfahren ? Mittlere Atmosphäre ? Forschungsprojekt ? Atmosphäre ? Kenngröße ? Klima ? Atmosphärenchemie ? Kühlung ? Zusammenarbeit ? Globale Aspekte ? Treibhausgas ? Maßnahme ? Atmosphärischer Prozess ? Forschung ? Forschungskooperation ? Geowissenschaften ? Partikel ? Flüssiger Stoff ?
License: cc-by-nc-nd/4.0
Language: Englisch/English
Time ranges: 2011-04-01 - 2013-03-31
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