Jonathan Katz, PhD

Professor, Physics

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“We have analyzed historic climate time series to measure or constrain trends in drought, temperature extremes and storminess. Several papers have been published. We have set tight bounds on any trends in drought and storminess in the U. S. (where good data exist). Record high temperatures occur with increasing frequency (compared to the null hypothesis of a stationary climate) in most of the world, but not in North America; record low temperatures occur with decreasing frequency (compared to the null hypothesis) everywhere. We do statistical studies of historical climate data. The subjects have included determining trends in storminess, rainfall variability, drought and temperature extremes. Undergraduates have participated in most of this research.”