001045730 001__ 1045730
001045730 005__ 20251211202153.0
001045730 037__ $$aFZJ-2025-03570
001045730 041__ $$aEnglish
001045730 1001_ $$0P:(DE-Juel1)186962$$aTurhal, Katharina$$b0$$ufzj
001045730 1112_ $$aBusan IAMAS-IACS-IAPSO Joint Assembly 2025$$cBusan$$d2025-07-20 - 2025-07-25$$gBACO-25$$wSouth Korea
001045730 245__ $$aVariability in Upper Troposphere – Lower Stratosphere transport from model age of air
001045730 260__ $$c2025
001045730 3367_ $$033$$2EndNote$$aConference Paper
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001045730 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1765457876_3962$$xAfter Call
001045730 520__ $$aUnderstanding transport pathways and timescales in the upper troposphere and lower stratosphere (UTLS) is essential for assessing changes in atmospheric composition, particularly for radiatively active trace gases. These species play a crucial role in the Earth’s radiation budget, yet their variability and trends remain uncertain due to incomplete representation of transport processes in current models.To address this, we analyze the evolution of UTLS transport over the past four decades by determining the Age of Air—the transit time from the troposphere into the stratosphere. We employ the Chemical Lagrangian Model of the Stratosphere (CLaMS), driven by ERA5 reanalysis data from 1979 to 2024, to investigate these research questions:    1. What does the climatology of Age of Air reveal about underlying transport mechanisms?    2. How have transport pathways and timescales changed over the last 40 years?    3. How do interannual drivers such as the Quasi-Biennial Oscillation (QBO) and El Niño-Southern Oscillation (ENSO) influence transport variability?    4. How do composition changes in the UTLS relate to observed and modeled trends in the Brewer-Dobson circulation (BDC), the tropopause, and subtropical transport barriers?We assess trends, seasonal cycles, and interannual variations in high-resolution Age of Air spectra, mean Age of Air and the mass fractions of young air. Our findings demonstrate significant improvements in the representation of fast transport processes, particularly in the tropics, enabled by the higher temporal resolution of the simulated age spectra compared to previous studies. In particular, fine-scale structure and sharp peaks in the age spectra relate to fast transport processes. These insights contribute to a more robust understanding of UTLS transport dynamics and their role in shaping atmospheric composition and climate variability.
001045730 536__ $$0G:(DE-HGF)POF4-2112$$a2112 - Climate Feedbacks (POF4-211)$$cPOF4-211$$fPOF IV$$x0
001045730 536__ $$0G:(GEPRIS)428312742$$aDFG project G:(GEPRIS)428312742 - TRR 301: Die Tropopausenregion in einer Atmosphäre im Wandel (428312742)$$c428312742$$x1
001045730 65027 $$0V:(DE-MLZ)SciArea-140$$2V:(DE-HGF)$$aGeosciences$$x0
001045730 7001_ $$0P:(DE-Juel1)129141$$aPloeger, Felix$$b1$$ufzj
001045730 7001_ $$0P:(DE-Juel1)180256$$aClemens, Jan Heinrich$$b2$$ufzj
001045730 7001_ $$0P:(DE-HGF)0$$aBirner, Thomas$$b3
001045730 7001_ $$0P:(DE-HGF)0$$aWeyland, Franziska$$b4
001045730 7001_ $$0P:(DE-Juel1)129130$$aKonopka, Paul$$b5$$ufzj
001045730 7001_ $$0P:(DE-HGF)0$$aHoor, Peter$$b6
001045730 7001_ $$0P:(DE-Juel1)173992$$aPodglajen, Aurelien$$b7
001045730 8564_ $$uhttps://baco-25.org/
001045730 909CO $$ooai:juser.fz-juelich.de:1045730$$pVDB
001045730 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)186962$$aForschungszentrum Jülich$$b0$$kFZJ
001045730 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129141$$aForschungszentrum Jülich$$b1$$kFZJ
001045730 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)180256$$aForschungszentrum Jülich$$b2$$kFZJ
001045730 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129130$$aForschungszentrum Jülich$$b5$$kFZJ
001045730 9131_ $$0G:(DE-HGF)POF4-211$$1G:(DE-HGF)POF4-210$$2G:(DE-HGF)POF4-200$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF4-2112$$aDE-HGF$$bForschungsbereich Erde und Umwelt$$lErde im Wandel – Unsere Zukunft nachhaltig gestalten$$vDie Atmosphäre im globalen Wandel$$x0
001045730 9141_ $$y2025
001045730 920__ $$lyes
001045730 9201_ $$0I:(DE-Juel1)ICE-4-20101013$$kICE-4$$lStratosphäre$$x0
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001045730 980__ $$aI:(DE-Juel1)ICE-4-20101013
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