How can Brewer–Dobson circulation trends be estimated from changes in stratospheric water vapour and methane?

The stratospheric meridional overturning circulation, also referred to as the Brewer-Dobson circulation (BDC), controls the composition of the stratosphere, which, in turn, affects radiation and climate. As the BDC cannot be directly measured, one has to infer its strength and trends indirectly. For...

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Veröffentlicht in:	Atmospheric chemistry and physics 2022-08, Vol.22 (15), p.9895-9914
Hauptverfasser:	Poshyvailo-Strube, Liubov, Müller, Rolf, Fueglistaler, Stephan, Hegglin, Michaela I, Laube, Johannes C, Volk, C. Michael, Ploeger, Felix
Format:	Artikel
Sprache:	eng
Schlagworte:	Age Age determination Air Analysis Approximation Approximation method Boundary conditions Chemical reactions Chemistry Clams Experiments Fourier transforms Gases Greenhouse gases Lower stratosphere Meridional overturning circulation Methane Mixing ratio Oxidation Propagation Radiation Satellites Stratosphere Stratospheric circulation Thermohaline circulation Trace gases Tracers Tracers (Chemistry) Transit time Trends Uncertainty Water circulation Water vapor Water vapour
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Beschreibung
Zusammenfassung:	The stratospheric meridional overturning circulation, also referred to as the Brewer-Dobson circulation (BDC), controls the composition of the stratosphere, which, in turn, affects radiation and climate. As the BDC cannot be directly measured, one has to infer its strength and trends indirectly. For instance, trace gas measurements allow the calculation of average transit times.
ISSN:	1680-7324 1680-7316 1680-7324
DOI:	10.5194/acp-22-9895-2022