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Uncertainties in the evolution of stratospheric ozone and implications for recent temperature changes in the tropical lower stratosphere

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Article number L17706
<mark>Journal publication date</mark>14/09/2012
<mark>Journal</mark>Geophysical Research Letters
Number of pages4
<mark>Original language</mark>English


Observations from satellites and balloons suggest that ozone abundances have decreased in the tropical lower stratosphere since the late 1970s, but this long-term change is occurring in a region of large interannual variability. Three different ozone databases provide regression fits to the ozone observations, and are available for use in model studies of the influence of ozone changes on stratospheric and tropospheric temperatures. Differences between these ozone databases suggest that the estimated decreases of tropical lower stratospheric ozone in recent decades are uncertain by about a factor of two to three. The uncertainties in ozone decreases lead to similar uncertainties in cooling of the tropical lower stratosphere, a key area of focus in climate change studies.

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©2012. American Geophysical Union. All Rights Reserved.