Observations of temperature, winds, and atmospheric trace gases suggest that the transition
from troposphere to stratosphere occurs in a layer, rather than at a sharp “tropopause.” In the …

Volatile organic compounds (VOCs) are widely recognized to affect the environment and
human health. This review provides a comprehensive presentation of the types and levels of …

The growing problem of changing environmental conditions caused by climate
destabilization is well recognized as one of the defining issues of our time. The root problem …

The eruption of the Hunga Tonga–Hunga Ha'apai volcano on 15 January 2022 offered a
good opportunity to explore the early impacts of tropical volcanic eruptions on stratospheric …

It is well established that anthropogenic chlorine-containing chemicals contribute to ozone
layer depletion. The successful implementation of the Montreal Protocol has led to …

Global models of atmospheric mercury generally assume that gas-phase OH and ozone are
the main oxidants converting Hg 0 to Hg II and thus driving mercury deposition to …

The amended and adjusted Montreal Protocol has continued to reduce emissions and
atmospheric abundances of most controlled ozone-depleting substances. By 2012, the total …

Evidence of mid-latitude ozone depletion and proof that the Antarctic ozone hole was
caused by humans spurred policy makers from the late 1980s onwards to ratify the Montreal …

Chloroform contributes to the depletion of the stratospheric ozone layer. However, due to its
short lifetime and predominantly natural sources, it is not included in the Montreal Protocol …

Halogens released from long-lived anthropogenic substances, such as chlorofluorocarbons,
are the principal cause of recent depletion of stratospheric ozone, a greenhouse gas …