Amina is a PhD student in the Earth Systems Science Department at Stanford University. Her work is primarily focused on understanding climate change risks, and the impacts of extreme temperatures on human systems. Her current work explores the influence of extreme heat events on small-scale mobility patterns, as well as global mapping projects of protected mountainous biodiversity hotspots

All Publications

  • Subnational biodiversity reporting metrics for mountain ecosystems NATURE SUSTAINABILITY Ly, A., Geschke, J., Snethlage, M. A., Stauffer, K. L., Nussbaumer, J., Schweizer, D., Diffenbaugh, N. S., Fischer, M., Urbach, D. 2023
  • Exploring the Influence of Summer Temperature on Human Mobility During the COVID-19 Pandemic in the San Francisco Bay Area. GeoHealth Ly, A., Davenport, F. V., Diffenbaugh, N. S. 2023; 7 (6): e2022GH000772


    Studies on the relationship between temperature and local, small scale mobility are limited, and sensitive to the region and time period of interest. We contribute to the growing mobility literature through a detailed characterization of the observed temperature-mobility relationship in the San Francisco Bay Area at fine spatial and temporal scale across two summers (2020-2021). We used anonymized cellphone data from SafeGraph's neighborhood patterns data set and gridded temperature data from gridMET, and analyzed the influence of incremental changes in temperature on mobility rate (i.e., visits per capita) using a panel regression with fixed effects. This strategy enabled us to control for spatial and temporal variability across the studied region. Our analysis suggested that all areas exhibited lower mobility rate in response to higher summer temperatures. We then explored how several additional variables altered these results. Extremely hot days resulted in faster mobility declines with increasing temperatures. Weekdays were often more resistant to temperature changes when compared to the weekend. In addition, the rate of decrease in mobility in response to high temperature was significantly greater among the wealthiest census block groups compared with the least wealthy. Further, the least mobile locations experienced significant differences in mobility response compared to the rest of the data set. Given the fundamental differences in the mobility response to temperature across most of our additive variables, our results are relevant for future mobility studies in the region.

    View details for DOI 10.1029/2022GH000772

    View details for PubMedID 37287701

    View details for PubMedCentralID PMC10243210