Rich Fiorella


Rich received his MS in Earth and Environmental Sciences in 2012 and a PhD in Geology in 2016 from the University of Michigan. Rich’s dissertation explored precipitation and surface water isotopes in the high central Andes and their relationship to continental climate dynamics, and patterns of water transport and cycling in Wyoming and northern Michigan using water vapor isotopes.

He is currently working with Gabe Bowen at the University of Utah, David Noone at Oregon State University, and Dave Williams at the University of Wyoming to explore patterns in atmospheric water transport and water exchange between the land and atmosphere across the western US. Rich will draw on a network of water vapor isotope measurements and meteorological and ecological data to elucidate the processes that cycle water in the mountain west. He will combine these observations with climate model simulations to help improve model representations of continental water cycling and constrain regional susceptibility to hydroclimatic change.


Daniel Mendoza


Daniel Mendoza received his Ph.D. in Earth and Atmospheric Sciences and M.S. in Physics from Purdue University, and B.A. in Physics and Computer Science from DePauw University. His Ph.D. dissertation focused on the policy applications of highly resolved spatial and temporal onroad CO2 emissions.

He is a postdoctoral fellow within the Global Change & Sustainability Center and works with John Lin and Jim Ehleringer on urban emissions and measurement projects. His research interests include quantifying and characterizing urban greenhouse gas and criteria pollutant emissions for use in human exposure estimation. He also examines health effects of acute pollutant exposure, particularly in vulnerable populations. Using a combination of bottom-up and top-down approaches, as well as isotopic signatures and geostatistical tools, he is looking to represent and analyze the urban metabolism of Salt Lake City and the surrounding valleys.


Logan Mitchell


Logan Mitchell completed both his undergraduate degree in Geology as well as his Ph.D. in Paleoclimatology at Oregon State University.  For his Ph.D. dissertation he made precise measurements of methane concentrations in ancient air trapped in ice cores and used those data to study the global methane budget over the past few thousand years (the late Holocene).  Currently, he is working with John Lin and Jim Ehleringer on quantifying emissions of both carbon dioxide and methane from high flux regions such as the Salt Lake City metropolitan area and the Uinta basin. 

His primary research interests involve quantifying trace gases emissions from a variety of sources using tools such as particle dispersion modeling and the isotopic signatures of sources.  By understanding and quantifying emissions he hopes to contribute to our understanding of the relationships between human activities, climate change, and the global carbon cycle in the past, present, and future.



Rose Smith


Rose Smith received her Ph.D in Geology from the University of Maryland and B.A. from Mount Holyoke College. For her PhD dissertation, Rose examined the role of urban stormwater and sanitary infrastructure on carbon and nitrogen loading as well as greenhouse gas emissions from streams in Baltimore, MD.

Rose is currently a postdoctoral fellow examining nitrogen sources in human-impacted waterways with Gabe Bowen and Diane Pataki at the University of Utah and Carol Kendall at the U.S. Geological Survey. Urban and agricultural landscapes are associated with excess nitrogen in streams and rivers. Nitrogen sources are often difficult to quantify due to spatial heterogeneity in inputs as well as biogeochemical processes. Using a combination of stable isotope tracers and spatial statistical tools, she aims to quantify the contribution of different nitrogen sources and in-stream processes to nitrogen cycling in rivers with urban and agricultural impacts.

Former ITCE Post-docs:

Jennifer Cotton (Post-doc 2013-2015):

Jen is now an Assistant Professor in the Department of Geological Sciences at California State University, Northridge.

Stephen Good (Post-doc 2013-2015):

Stephen is now an Assistant Professor in the Biological and Ecological Engineering Department at Oregon State University.

Hannah Vander Zanden (Post-doc 2013-2016):

Hannah is now an Ecologist with the U.S. Geological Survey, where she is currently using stable isotope analyses to identify the geographic extent of wildlife experiencing fatalities at renewable energy facilities in California.


ITCE News!

New Instructional Video Module on Biogeography and Isotope Fractionation in C3 & C4 plants with Christopher Still! Check out all of the videos at the bottom of the 'Summer Courses' tab!


New Publications - Two new papers by SPATIAL alum Sean Brennan involving salmon migration (here) and using dendritic network models to improve Strontium isoscapes (here)!


New Blog Post - Former SPATIAL student Katie Wedemeyer-Strombel discusses her experience as a SPATIAL student last summer! (Check it out here!)


Awards - Former ITCE post-doc Jennifer Cotton has received an NSF Macrosystems Biology Grant. Congratulations, Jen! (Check out the NEON press release here!)

New Publications - Former SPATIAL student Chabi Djagoun's work on carbon isotope niches in herbivores in a west African savannah is now available in Mammalian Biology - Free download until Nov 7th! (Check it out here)


New Publications - Former SPATIAL student Giovanny Mosquera in two new publications involving high elevation tropical ecosystems (Hydrological Processes and Hydrology and Earth System Sciences)


Awards - Congratulations to Jim Ehleringer for receiving the prestigious Rosenblatt Prize for Excellenc! (Read more here.)


Presentations - Several SPATIAL & IsoCamp instructors and past students represented at the 10th annual (ISOECOL meeting in Tokyo!) last week.

Archived ITCE News


IsoMAP: WebGIS for Isotopes

IsoMAP is a dynamic, online workspace for spatial analysis, modeling and prediction of stable isotope ratio variation in the natural environment. The initial realease of the IsoMAP gateway is now live and supports precipitation isotope ratio modeling. Visit IsoMAP to learn more or to start making isoscapes today!