Long-term cooling of the stratosphere

William Randel, K. Shine, J. Austin, C. Claud, N. Gillett, P. Keckhut, U. Langematz, C. Mears, R. Lin, J. Miller, J. Nash, D. Seidel, D. Thompson, S. Yoden

Research output: Contribution to journalComment/debatepeer-review

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Due to the increased greenhouse gases and ozone depletion, the stratosphere has cooled substantially. An updated assessment of stratospheric temperature trend took place within the World Climate Research Program/Stratospheric Processes and Their Role in Climate WCRP/ SPARC program to improve understanding of the past trends and quantify data uncertainties. New analyses show good agreement between satellite and radiosonde datasets for cooling trends in the lower stratosphere but weaker in the middle stratosphere. The data present excellent agreement with satellite measurements from the microwave sounding unit (MSU) over 1979-2005. In the middle and upper stratosphere, the main data are from stratospheric sounding unit (SSU) instruments. The time series data show cooling throughout the stratosphere with relatively strong trends near strato-pause, the derived trends in the middle stratosphere are substantially smaller.

Original languageEnglish
Pages (from-to)620-621
Number of pages2
JournalBulletin of the American Meteorological Society
Issue number5
Publication statusPublished - May 2007

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