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Publications in VIVO

Dyonisius, Michael Nathaniel



Research Areas research areas


research overview

  • My research is focused on using radiocarbon (14C) as a tracer for Earth system processes. A major activity at the CU-INSTAAR Laboratory for AMS Radiocarbon Preparation and Research (NSRL) is the processing of air samples from NOAA Global Greenhouse Gas Reference Network for 14CO2 measurements. We use 14CO2 as a tracer for fossil CO2 emissions to the atmosphere. I'm currently working on expanding the graphite line at NSRL to increase our sample throughput. I’m also conducting data analysis on our 10-year record of novel atmospheric 14C of methane (14CH4) measurements from the Arctic. We use 14CH4 as a tracer for CH4 emissions from old permafrost. Finally, I’m working at the CU-INSTAAR Stable Isotope Lab (SIL) to develop an experimental setup to measure stable isotopes of carbon monoxide.


  • Paleoclimate, ice cores, radiocarbon


selected publications

International Activities