TRR 301:  The tropopause region in a changing atmosphere

• Subject Area: Geosciences
• Term: since 2021
• Website: Homepage
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 428312742

No abstract available

• DFG Programme: CRC/Transregios

Current projects

• A01 - Impact of aerosol precursors and aircraft emissions on the composition of the UTLS (Project Heads Jurkat-Witschas, Tina ;  Tomsche, Laura ;  Voigt, Christiane )
• A02 - Long-term evolution of mid-latitude ice and mixed-phase cloud properties and their radiative effects from geostationary satellite observations (Project Heads Bugliaro, Luca ;  Voigt, Christiane )
• A03 - Aerosol nucleation in the upper troposphere (Project Heads Curtius, Joachim ;  Tost, Holger )
• A04 - Composition and transport of aerosol particles in the UTLS and their interactions with cirrus clouds (Project Heads Borrmann, Stephan ;  Köllner, Franziska ;  Li, Yun ;  Schneider, Johannes ;  Vogel, Alexander )
• A05 - Chemical characterisation of organic aerosol in the UTLS (Project Heads Hoffmann, Thorsten ;  Vogel, Alexander Lucas )
• A06 - Composition and variability of UTLS refractory aerosol and ice-nucleating particles (Project Heads Curtius, Joachim ;  Ebert, Martin ;  Kandler, Konrad )
• B01 - Exchange of humidity and aerosol particles at the tropopause: Dynamics versus moist diabatics and radiation (Project Heads Hoor, Peter ;  Miltenberger, Annette ;  Tost, Holger )
• B02 - Cross-seasonal Investigation Regarding the Composition of atmospheric trace matter Up to UTLS heights – CIRCUS (Project Heads Fachinger, Friederike ;  Kandler, Konrad ;  Weigel, Ralf )
• B03 - Moist convection and tracer transport into and out of the Asian Summer Monsoon Anticyclone (Project Heads Ahrens, Bodo ;  Schmidli, Juerg )
• B06 - Impact of small-scale dynamics on UTLS transport and mixing (Project Heads Achatz, Ulrich ;  Kunkel, Daniel ;  Schmidli, Juerg )
• B07 - Impact of cirrus clouds on tropopause structure (Project Heads Achatz, Ulrich ;  Dolaptchiev, Stamen Iankov ;  Spichtinger, Peter )
• B08 - Lagrangian analysis of moisture, aerosols, trace gases and water isotope distribution in the extra-tropical UTLS (Project Head Miltenberger, Annette )
• B09 - The role of UTLS moisture for the extra-tropical mean circulation (Project Heads Miltenberger, Annette ;  Riemer, Michael )
• C01 - Life Cycle of Ice Supersaturated Regions in the UTLS (Project Heads Krämer, Martina ;  Reutter, Philipp ;  Rohs, Susanne ;  Rolf, Christian ;  Spichtinger, Peter )
• C02 - AirCore observations to constrain changes in stratospheric circulation (Project Heads Engel, Andreas ;  Hoor, Peter )
• C03 - Improving process understanding and model representation of stratospheric water vapour and related climate feedbacks (Project Heads Hoor, Peter ;  Plöger, Felix ;  Rolf, Christian )
• C05 - Large-scale structure and variability of lowermost stratospheric water vapour (Project Heads Birner, Thomas ;  Hoor, Peter )
• C06 - The importance of upper troposphere aerosol transport and processing for low and mid troposphere aerosol concentrations (Project Heads Curtius, Joachim ;  Possner, Anna ;  Pozzer, Andrea )
• C07 - Controlling Factors of Oxidants and Aerosols in the Upper Troposphere and Lower Stratosphere and the Anthropogenic Influence (COATS) (Project Heads Jöckel, Patrick ;  Pozzer, Andrea ;  Tost, Holger )
• C08 - Convection and its moisture transport into the UTLS in Lagrangian and Eulerian frameworks (Project Heads Jöckel, Patrick ;  Tost, Holger )
• C09 - Role of the representation of gravity waves for downward transport from the middle atmosphere into the UTLS (Project Heads Achatz, Ulrich ;  Garny, Hella )
• Z01 - Central coordination and campaign management (Project Head Hoor, Peter )
• Z02 - Data management and integration (Project Head Kunkel, Daniel )
• Z03 - Joint model development and modelling synthesis (Project Heads Achatz, Ulrich ;  Jöckel, Patrick ;  Tost, Holger )

Completed projects

• A07 - Processing of organic compounds in ice particles during deep convective transport into the UTLS (Project Heads Szakáll, Miklós ;  Theis, Alexander )
• B04 - Structure formation and mixing in the extratropical tropopause region (Project Heads Kunkel, Daniel ;  Wirth, Volkmar )
• C04 - Seasonality, variability and trends of halogenated trace gases in the UTLS (Project Head Engel, Andreas )

• Applicant Institution: Johannes Gutenberg-Universität Mainz
• Co-Applicant Institution: Goethe-Universität Frankfurt am Main
• Participating University: Ludwig-Maximilians-Universität München; Technische Universität Darmstadt
• Participating Institution: Forschungszentrum Jülich; Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) ; Standort Oberpfaffenhofen ; Institut für Physik der Atmosphäre; Max-Planck-Institut für Chemie (Otto-Hahn-Institut)
• Spokesperson: Professor Dr. Peter Hoor