CIRES Special Seminar: Ellyn Enderlin
Chasing Ice(bergs): An interdisciplinary remote sensing approach to study changing ice-ocean interactions in Greenland’s glacial fjords
by Ellyn Enderlin - University of Maine Climate Change Institute and School of Earth and Climate Sciences
Abstract: Over the last two decades, atmospheric and oceanic warming have driven increases in surface meltwater runoff and iceberg discharge from the Greenland Ice Sheet. Although spatial and temporal variations in surface meltwater runoff can largely be explained by changes in air temperature, the link between iceberg discharge variability and climate change is relatively poorly understood.
Bio: Ellyn Enderlin is currently a research assistant professor at the University of Maine Climate Change Institute and School of Earth and Climate Sciences. Her work aims to improve the understanding of the response of glaciers and ice sheets to climate change. She initially became interested in glaciers when she was invited to participate in a field campaign in the Peruvian Andes while working on her B.S. in Environmental Science at Lehigh University. After returning from the field, Ellyn continued her research on Peruvian glacier change using satellite remotely sensed images and digital elevation models to document glacier recession at the end of the 20th century. Throughout her graduate career at The Ohio State University, Ellyn honed her expertise in glaciology and remote sensing through a number of research projects focused on marine-terminating glaciers in Greenland and Iceland. Since completing her M.S. in Geological Science and PhD in Earth Science at OSU, Ellyn has expanded her research interests to include ice-ocean interactions, her geographic focus to include Antarctic and Alaskan glaciers, and her remote sensing expertise to include very high-resolution stereo satellite images. Her ongoing inter-disciplinary research projects utilize a variety of in situ and remotely sensed observations to study glacier change, including hyperspectral satellite images and data products, airborne lidar and ice-penetrating radar observations, GPS, terrestrial time-lapse photographs, and air and ocean temperature observations.
CWEST Seminar: Reed Maxwell
The Center for Water, Earth Science and Technology (CWEST) presents
Connections in the hydrologic cycle: How anthropogenic stresses impact feed-backs, sensitivity and sustainability
by Reed Maxwell - Hydrology and Engineering Program, Department of Geology & Geologic Engineering, Colorado School of Mines
Aquifers are a critical water resource, particularly in irrigation, but also participate in moderating the land-energy balance over the so-called critical zone of 2-10m in water table depth. Yet, the scaling behavior of groundwater is not well known. The interdependence between groundwater and land energy fluxes has tremendous implications for hydrologic feedbacks resulting from climate change and anthropogenic activities. Pumping and irrigation are often overlooked in groundwater impact studies but are shown here to impact water table depth resulting in changes to the land-energy budget. Compounding these interactions, recent climate-exacerbated infestation of the mountain pine beetle (MPB) in the Rocky Mountain west has resulted in unprecedented tree death across the region. The spatial and temporal heterogeneity of the epidemic creates a complex and often inconsistent watershed response, impacting the primary storage and flow components of the hydrologic cycle. Here, I will highlight three research areas within my group: understanding the anthropogenic impacts on the hydrologic cycle, impacts of climate-induced insect-drive tree mortality on the hydrology and water quality in the intermountain west and scaling of groundwater and residence times over the continental United States. A range of approaches will be discussed, including high performance computing and implications for understanding dominant hydrological processes at large scales will be presented.