I am a Research Scientist at the Cooperative Institute for Research in Environmental Sciences at the University of Colorado, Boulder. I study long-term changes in tropical climate and ecosystems, from the geologic past to the 21st century. My work is in partnership with the Climate Processes Research Group at Oregon State University, the Cobb Lab at Georgia Tech and the Paleoclimate Group at the National Center for Atmospheric Research.

You can follow me on Twitter at @other_rock.

Photos from the field (above): Bofedales in the Peruvian Andes; Elephants in Maasai Mara, Kenya; the Gheralta range in Tigray, Ethiopia; Petroglyphs in Arches National Park, USA.


2/13/2017: New paper out on climate/amphibian/disease interactions in the Peruvian Andes. This one has a special place in my heart: it builds on work I did as an undergrad!

2/1/2017:  Honored to be giving keynote addresses at KR8 and Goldschmidt this year. More info here and here.

1/9/2017: The first Iso2k team meeting will take place May 14-15 in Zaragoza, Spain. All water isotope aficionados welcome! Funding is available for early-career scientists (thanks PAGES). See you in Zaragoza!

4/14/2016: We’re back from a successful field excursion to the Okavango Delta, Botswana. Stay tuned for field blogs on the National Geographic and CIRES websites!

4/8/2016: New paper published today on stable isotopes in water vapor and precip in Papua New Guinea. Check it out here.

1/13/2016: Our paper on glacial hydroclimate in Indonesia is out! It’s free to download until March 3 if you use this link.