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Stratosphere-troposphere Exchange

Climate is particularly sensitive to composition changes in the upper troposphere and lower stratosphere where much infra-red radiation escapes to space and ozone is most effective as a greenhouse gas.

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Transport of ozone from the stratosphere is an important source of variability in tropospheric ozone, affecting climate and air pollution. Although ozone can be measured from many platforms, global high-resolution ozone measurements in the upper troposphere are missing, which hampers quantification of the tropospheric ozone budget and the role of transport from the stratosphere.