Description: Das Projekt "How is the Brewer-Dobson circulation affected by climate change, and which processes are relevant? (SHARP-BDC)" wird vom Umweltbundesamt gefördert und von Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Institut für Physik der Atmosphäre, Abteilung Dynamik der mittleren Atmosphäre durchgeführt. This project aims to identify and quantify dynamical, physical and chemical processes as well as feedback effects affecting the stratospheric circulation (Brewer-Dobson circulation, BDC), which is responsible for transport of stratospheric air masses from tropical to higher latitudes. Climate change is expected to modify the motion and mass exchange rates of air within the stratosphere and therefore the residence time and distribution of chemical substances. Although substantial progress has been achieved in recent years regarding understanding relevant processes affecting the Brewer-Dobson circulation, there are still open issues about atmospheric processes and feedbacks impacting the long-term changes of the BDC. So far, common analyses of observations and results from numerical model simulations do not indicate a consistent picture. Therefore, multi-decadal transient simulations with Atmospheric General Circulation Models, climate models and Chemistry-Climate Models together with assembled, consistent long-term observations (especially derived from space-borne-, balloon-, aircraft- and ground-based instruments) will be further used to investigate atmospheric processes affecting the BDC. Supplementary numerical sensitivity studies with the different models will be performed and interpreted to establish cause and effect relationships. It will be investigated how the relevant processes are going to alter in a changing climate, modifying stratospheric dynamics.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Fischer-Tropsch-Verfahren ? Luftmassenaustausch ? Geografische Koordinaten ? Klimavariabilität ? Prognose ? Langzeitbeobachtung ? Globales Klimamodell ? Mittlere Atmosphäre ? Chemisches Verfahren ? Rechtsverfahren ? Klimamodell ? Luftfahrzeug ? Luftverkehr ? Mathematisches Modell ? Numerisches Verfahren ? Simulationsmodell ? Stratosphäre ? Studie ? Tropengebiet ? Wirkung ? Ballonfahren ? Zirkulation ? Klimawandel ? Klimamonitoring ? Atmosphärischer Prozess ? Chemischer Stoff ? Erdoberfläche ? Raumfahrt ? Betrachtung ? Dauer ? Raum ? Verteilung ? Adsox-Verfahren ? Werkzeug ? Überempfindlichkeit ? Bezug ? Bram-Verfahren ?
Region: Bayern
Bounding box: 12.53381° .. 12.53381° x 47.795° .. 47.795°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2009-01-01 - 2017-12-31
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