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From:Atmospheric Chemistry and Physics (Vol. 22, Issue 8) Peer-ReviewedThe expected effect of ozone recovery on the stratospheric Brewer-Dobson circulation (BDC) is a slow-down, strongest in the Southern Hemisphere (SH). In contrast, the BDC has been found to weaken more strongly in the...
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From:Atmospheric Chemistry and Physics (Vol. 22, Issue 2) Peer-ReviewedMean age of air (AoA) is a common diagnostic for the strength of the stratospheric overturning circulation in both climate models and observations. AoA climatologies and AoA trends over the recent decades of model...
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From:Atmospheric Chemistry and Physics (Vol. 21, Issue 17) Peer-ReviewedThe Brewer-Dobson circulation (BDC) is a key feature of the stratosphere that models need to accurately represent in order to simulate surface climate variability and change adequately. For the first time, the Climate...
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From:Atmospheric Chemistry and Physics (Vol. 16, Issue 13) Peer-ReviewedThis study investigates the abrupt and severe water vapour decline in the stratosphere beginning in the year 2000 (the "millennium water vapour drop") and other similarly strong stratospheric water vapour reductions by...
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From:Atmospheric Chemistry and Physics (Vol. 19, Issue 7) Peer-ReviewedByline: Marius Hauck, Frauke Fritsch, Hella Garny, Andreas Engel To access, purchase, authenticate, or subscribe to the full-text of this article, please visit this link:...
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From:Atmospheric Chemistry and Physics (Vol. 17, Issue 12) Peer-ReviewedMean age of air (AoA) is a widely used metric to describe the transport along the Brewer-Dobson circulation. We seek to untangle the effects of different processes on the simulation of AoA, using the chemistry-climate...
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From:Atmospheric Chemistry and Physics (Vol. 16, Issue 22) Peer-ReviewedThe South Asian High (SAH) is an important component of the summer monsoon system in Asia. In this study we investigate the location and drivers of the SAH at 100 hPa during the boreal summers of 1979...
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From:Atmospheric Chemistry and Physics (Vol. 19, Issue 17) Peer-Reviewed
We perform the first multi-model intercomparison of the impact of nudged meteorology on the stratospheric residual circulation using hindcast simulations from the Chemistry-Climate Model Initiative (CCMI). We examine...
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From:Atmospheric Chemistry and Physics (Vol. 21, Issue 9) Peer-ReviewedRecent observations show a significant decrease in lower-stratospheric (LS) ozone concentrations in tropical and mid-latitude regions since 1998. By analysing 31 chemistry climate model (CCM) simulations performed for...
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From:Geoscientific Model Development (Vol. 13, Issue 11) Peer-ReviewedAs models of the Earth system grow in complexity, a need emerges to connect them with simplified systems through model hierarchies in order to improve process understanding. The Modular Earth Submodel System (MESSy) was...
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From:Atmospheric Chemistry and Physics (Vol. 19, Issue 13) Peer-Reviewed
Numerous studies have presented evidence that the Asian summer monsoon anticyclone substantially influences the distribution of trace gases - including water vapour - in the upper troposphere and lower stratosphere...
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From:Atmospheric Chemistry and Physics (Vol. 17, Issue 18) Peer-ReviewedThe amplitude of the annual variation in water vapour exhibits a distinct isolated maximum in the middle and upper stratosphere in the southern tropics and subtropics, peaking typically around 15° S in latitude and...
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From:Atmospheric Chemistry and Physics (Vol. 18, Issue 9) Peer-ReviewedThe stratospheric age of air (AoA) is a useful measure of the overall capabilities of a general circulation model (GCM) to simulate stratospheric transport. Previous studies have reported a large spread in the...
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From:Atmospheric Chemistry and Physics (Vol. 19, Issue 11) Peer-Reviewed
Climate model simulations show an acceleration of the Brewer-Dobson circulation (BDC) in response to climate change. While the general mechanisms for the BDC strengthening are widely understood, there are still open...
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From:Atmospheric Chemistry and Physics (Vol. 20, Issue 14) Peer-ReviewedMean age of air (AoA) is a diagnostic of transport along the stratospheric Brewer-Dobson circulation. While models consistently show negative trends, long-term time series (1975-2016) of AoA derived from observations...
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From:Atmospheric Chemistry and Physics (Vol. 16, Issue 4) Peer-ReviewedTransport pathways of air originating in the upper-tropospheric Asian monsoon anticyclone are investigated based on three-dimensional trajectories. The Asian monsoon anticyclone emerges in response to persistent deep...
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From:Atmospheric Chemistry and Physics (Vol. 19, Issue 13) Peer-Reviewed
Numerous studies have presented evidence that the Asian summer monsoon anticyclone substantially influences the distribution of trace gases - including water vapour - in the upper troposphere and lower stratosphere...
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From:Atmospheric Chemistry and Physics (Vol. 19, Issue 2) Peer-Reviewed
Climate models consistently predict an acceleration of the Brewer-Dobson circulation (BDC) due to climate change in the 21st century. However, the strength of this acceleration varies considerably among individual...