Ethan Welty

Ph.D. Student

Contact Information

Secondary Core Area


BS, University of Washington


Ethan began his Ph.D. in Environmental Studies in Fall 2009. He arrived with B.S. degrees in Physics and Mathematical Biology from the University of Washington in Seattle, and two years of experience working as a geographer for the US Geological Survey (USGS), conducting fish and habitat surveys in Pacific Northwest rivers. He now works as a research assistant for Professor Tad Pfeffer at the Institute for Arctic and Alpine Research (INSTAAR). His PhD research includes extracting high-resolution time series of tidewater glacier dynamics from time-lapse photographs, harnessing crowdsourcing platforms to tackle some of his difficult-to-automate image processing needs, and evaluating internet photo collections as records of subtle landscape changes. A side project, building an inventory of Boulder urban arable land with corresponding yield estimates, was supported in 2011-2012 by a CU Green Fund Scholarship. He is also an award-winning photographer