Dr. Jessica Tierney is an Associate Professor in the Department of Geosciences at the University of Arizona. Professor Tierney's research concentrates on molecular paleoclimatology, where she investigates past environmental change from fossil molecules (called 'biomarkers') preserved in sediments. With this approach, she focuses on placing present and future changes in Earth's environment within the perspective of past changes. Her major region of focus has been the tropics, where she has conducted research over large portions of Africa, the Indian Ocean, and the Indo-Pacific Warm Pool, in addition to leading global syntheses of ocean changes over the Common Era (the last 2,000 years). Professor Tierney is a Packard Fellow, a recipient of the American Geophysical Union's James B. Macelwane Medal for significant scientific contributions by an early career scientist, and is a Fellow of the American Geophysical Union.
In this free lecture for the general public, Professor Tierney will focus on the environmental and societal impacts of climate change and El Niño on the Horn of Africa. Reception to follow, 6:30–7:30 p.m.
This is the more technical, College Science Lecture. During the Green Sahara period, the Sahara desert was transformed into a wetter environment that hosted lakes, vegetation, and humans. New biomarker-based paleoclimate analyses are giving us a fresh perspective on the spatiotemporal evolution of this classic time interval, including evidence for a mid-Holocene interruption in the Green Sahara conditions that corresponds to important changes in Neolithic lifestyles.
Sponsored by the Oregon State University College of Earth, Ocean, and Atmospheric Sciences
Accommodations for disabilities may be made by calling 541-737-3504, preferably one week in advance.
Professor Jessica Tierney
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