Alexandrea Arnold is a second year PhD student in the Department of Atmospheric and Oceanic Sciences, where she is a graduate fellow of the Center for Diverse Leadership in Science and was awarded a Eugene V. Cota-Robles fellowship. Alex grew up in the desert in southern Arizona, where the monsoon prompted her interest in weather and climate at a very young age. Her PhD research investigates how the atmospheric dynamics that governed hydroclimate (temperature, evaporation, precipitation) evolved in the Southwestern United States since the Last Glacial Maximum, roughly 20,000 years ago. Alex uses geochemical proxies in concert with modeling to see if climate models are capturing the trends that are observed in the geologic record. Prior to starting graduate school, she received her Bachelor’s degree from UCLA, double majoring in Atmospheric and Oceanic Sciences and Earth and Environmental Sciences.