Research Interests

• Attribution of Weather and Climate Related Extremes
• Climate Diagnostics
• Dynamic Troposphere-Stratosphere Interactions
• Chemistry Climate Interactions
• Role of the Stratosphere in Climate and Climate Change

Education

• Ph.D., Atmospheric Science, Hamburg University, Germany, May 2000
• M.S., Meteorology, Humboldt University, Berlin, Germany, Feb 1992

Professional Activities

• Fellow, Cooperative Institute for Research in Environmental Sciences, University of Colorado
• Editor, Journal of Climate (2013-2016)
• Review Editor, WMO Assessment of Ozone Depletion 2014, Chapter 3
• Lead Author, IPCC Fifth Assessment Report, Chapter 10
• WCRP-SPARC Co-chair (since 2016)

Honors and Awards

• American Meteorological Society, Fellow (2016)