Daniel Cleary

Postdoctoral Research Fellow

Email: dcleary@pusan.ac.kr

Research interests

  • Paleoclimate
  • Speleothem fluid inclusion analysis
  • Climate reconstructions from cave bat guano carbon and nitrogen isotope records
  • Speleothem stable isotope analysis
  • Palynology


2019 Ph.D. Geology, University of South Florida
2015 M.Sc. Geology, University of South Florida
2013 B.A. Geology, Cornell College

Work Experience

2019 2022 Postdoc, Pacific Northwest National Laboratory
2013 2019 Teaching assistant, University of South Florida

Fellowships, Awards, and Honors

2015 National Science Foundation EAPSI Fellowship
2017 Tharp Fellowship, University of South Florida


  1. James J. Moran, Timothy J. Linley, Camille N. Makarem, James F. Kelly, Eric D. Wilcox Freeburg, Daniel M. Cleary, M. Lizabeth Alexander, Jason M. Kriesel, Spectroscopy-based isotopic (δ13C) analysis for high spatial resolution of carbon exchange in the rhizosphere, Rhizosphere,
  2. Cleary, D.M., Linley, T., Kriesel, J., Fahrland, A., Kelly, J.F., Moran, J.J. 2021. Capillary absorption spectroscopy for high temporal resolution measurements of stable carbon isotopes in soil and plant-based systems. Plant Physiology and Biochemistry, 169, 1-8.
  3. Cleary D.M., Onac B.P. 2020. Using ratios in cave guano to assess past environmental changes. Geological Society, London, Special Publications 507, 209–224
  4. Cleary, D.M., Feurdean, A., Tanțău, I., Forray, F.L. 2019. Pollen, δ15N and δ13C guano-derived record of late Holocene vegetation and climate in the southern Carpathians, Romania. Review of Palaeobotany and Palynology, 265, 62-75
  5. Cleary, D.M., Onac, B.P., Tanțău, I., Forray, F.L., Wynn, J.G., Ionita, M., Tămaș, T. 2018. A guano-derived δ13C and δ15N record of climate since the Medieval Warm Period in north-west Romania. Journal of Quaternary Science, 33(6), 677-688
  6. Cleary, D.M., Wynn, J.G., Ionita, M., Forray, F.L., Onac, B.P. 2017. Evidence of long-term NAO influence on East-Central Europe winter precipitation from a guano-derived δ15N record. Scientific Reports, 7, 14095
  7. Cleary, D.M., Onac, B.P., Forray, F.L., Wynn, J.G. 2016. Effect of diet, anthropogenic activity, and climate on δ15N values of cave bat guano. Palaeogeography, Palaeoclimatology, Palaeoecology, 461, 87-97
  8. Denniston, R.F., Wyrwoll, K-H., Polyak, V.J., Brown, J.R., Asmerom, Y., Wanamaker Jr., A.D., LaPointe, Z., Ellerbroek, R., Barthelmes, M., Cleary, D.M., Cugley, J., Woods, D., Humphreys, W.F., A stalagmite record of Holocene Indonesian-Australian summer monsson variability from the Australian tropics. (2013). Quaternary Science Reviews, 78, 155-168