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

Research output: Contribution to journalJournal article

Published

Article number L17706
Journal publication date14/09/2012
JournalGeophysical Research Letters
Volume39
Number of pages4
Original languageEnglish

Abstract

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.

Bibliographic note

©2012. American Geophysical Union. All Rights Reserved.