Age of stratospheric air is a well established metric for the stratospheric transport circulation.
Rooted in a robust theoretical framework, this approach offers the benefit of being deducible …

Atmospheric concentrations of the greenhouse gases carbon dioxide and nitrous oxide have
increased substantially because of human activities. However, their sources in South Asia …

During the Asian monsoon season, greenhouse gases and pollution emitted near the
ground are rapidly uplifted by convection up to an altitude of∼ 13 km, with slower ascent …

This paper investigates the global stratospheric Brewer–Dobson circulation (BDC) in the
ERA5 meteorological reanalysis from the European Centre for Medium-Range Weather …

The stratospheric Brewer–Dobson circulation (BDC) is an important element of climate as it
determines the transport and distributions of key radiatively active atmospheric trace gases …

Pyrocumulonimbus (pyroCb) are wildfire-generated convective clouds that can inject smoke
directly into the stratosphere. PyroCb have been tracked for years, yet their apparent rarity …

Previous studies have robustly identified a decrease since 1998 in lower stratospheric (LS)
ozone in the Northern Hemisphere (NH). While this ozone decrease is qualitatively …

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 …

Specified dynamics schemes are ubiquitous modeling tools for isolating the roles of
dynamics and transport on chemical weather and climate. They typically constrain the …

The age of air is an important transport diagnostic that can be derived from trace gas
measurements and compared to global chemistry climate model output. We describe a new …