Trevor Porter, Assistant Professor


Home Campus:
U o f T Mississauga

Carleton University (2012)

Other Degrees:
BSc, Carleton University (2006)

Contact Information:

Department of Geography, Geomatics and Environment
University of Toronto – Mississauga
William Davis Building, Room 3280
3359 Mississauga Road, Mississauga, ON, Canada L5L 1C6
office +1-905-828-5314 | fax +1-905-828-5273

Personal Website:

Research Interests:

  • Paleoenvironments
  • Climate change
  • Stable isotope geochemistry
  • Dendrochronology

Teaching This Academic Year:

  • GGR112H5S – Physical Geography
  • GGR304H5S – Dendrochronology
  • GGR379H5F – Field Methods in Physical Geography
  • GGR479H5S – Advanced Seminar in Paleoenvironmental Studies
  • GGR1218H5S – Open-Source Methods in Physical Geography

Selected Publications:

  • Eccles, K, Majeed, H, Porter, TJ, Lehnherr, I (accepted): A continental and marine influenced tree rings mercury record in Old Crow, Yukon, Canada. ACS Earth and Space Chemistry.
  • Munoz, S, Porter, T, Bakkelund, A, Nausbaumer, J, Dee, S, Giosan, L, & Tierney, J (2020): Lipid biomarker record documents hydroclimatic variability of the Mississippi River basin during the Common Era. Geophysical Research Letters 47 (12), doi: 10.1029/2020GL087237.[LINK]
  • Holland, KM, Porter, TJ, Froese, DG, Kokelj, SV, Buchanan, C (2020). Ice-wedge evidence of Holocene winter warming in the Canadian Arctic. Geophysical Research Letters 47(12), doi: 10.1029/2020GL087942.[LINK]
  • Bandara, Froese, D, S, Porter, TJ, Calmels, F, (accepted). Holocene pore-ice δ18O and δ2H records from drained thermokarst lake basins in the Old Crow Flats, Yukon, Canada. Permafrost and Periglacial Processes.
  • Otiniano, G, Porter, TJ, Benowitz, J, Bindeman, I, Froese, D, Jensen, B, Davies, L, Phillips, M (accepted): Late Cenozoic climate change in terrestrial southern Alaska. Paleoceanography and Paleoclimatology.[LINK]
  • Porter, TJ, Opel, T (2020). Relict permafrost as an archive for paleo-meteoric waters and climate reconstruction. 2020 International Permafrost Association Transactions Special Issue, Permafrost and Periglacial Processes. [LINK]
  • Churakova (Sidorova), OV, Porter, TJ, Kirdyanov, AV, Myglan, SV, Fonti, MV, & Vaganov, E.A. (accepted). Chapter 21. Stable isotopes in tree rings as indicators of climatic and eco-physiological changes across boreal forest. Editors: Siegwolf, R, Brooks, JR, Roden, & J, Saurer, M. In: Stable Isotopes in Tree Rings: Inferring Physiological, Climatic and Environmental Responses. Springer: Tree Physiology.
  • Ghotra, A, Lehnherr, I, Porter, TJ, & Pisaric, M (2020): Tree-Ring Inferred Atmospheric Mercury Concentrations in the Mackenzie Delta (NWT, Canada) Peaked in the 1970s but Are Increasing Once More. ACS Earth and Space Chemistry 4: 457-466.[LINK]
  • Lange, J, Carrer, M, Pisaric, MFJ, Porter, TJ, Seo, J-W; Trouillier, M, Wilmking, M, (2019). Moisture-driven shift in the climate sensitivity of white spruce xylem anatomical traits is coupled to large-scale oscillation patterns across the northern treeline in Alaska and NW Canada. Global Change Biology 25:1842-1856. [LINK]
  • Porter, TJ, Schoenemann, SW, Davies, LJ, Steig, EJ, Bandara, S, Froese, DG (2019). Recent summer warming in northwestern Canada exceeds the Holocene thermal maximum. Nature Communications, doi://10.1038/s41467-019-09622-y. [LINK]
  • Bakkelund, A, Porter, TJ, Froese, DG, Feakins, SJ (2018). Net fractionation of hydrogen isotopes in n-alkanoic acids from soils in the northern boreal forest. Organic Geochemistry, doi://10.1016/j.orggeochem.2018.08.005. [LINK]
  • Clackett, S, Porter, TJ, Lehnherr, I (2018). A 400-year record of atmospheric mercury from tree-rings in northwestern Canada. Environmental Science & Technology, doi://10.1021/acs.est.8b01824. [LINK]
  • PAGES 2k Consortium (2017): A global multiproxy database for temperature reconstructions of the Common Era. Scientific Data, SDATA-16-00169. [LINK]
  • Porter, TJ, Froese, DG, Feakins, SJ, Bindeman, I, Mahony, ME, Pautler, BG, Reichart, G-J, Sanborn, PT, Simpson, MJ, Weijers, JWH (2016): Multiple water isotope proxy reconstruction of extremely low last glacial temperatures in Eastern Beringia (Western Arctic). Quaternary Science Reviews, 137: 113-125. [LINK]
  • Dick, M, Porter, TJ, Pisaric, MFJ, Wertheimer, È, deMontigny, P, Perreault, JT, Robillard, K-L (2014): Development of a multicentennial eastern white pine tree ring chronology from salvaged river logs and its utility for dendroarcheological dating in eastern Ontario, Canada. Dendrochronologia, 32: 120-126. [LINK]
  • Porter, TJ, Pisaric, MFJ, Field, R, Kokelj, SV, Edwards, TWD, deMontigny, P, Healy, R, and LeGrande, A (2014): Spring-summer temperatures since AD 1780 reconstructed from stable oxygen isotope ratios in white spruce tree-rings from the Mackenzie Delta, northwestern Canada. Climate Dynamics, 42: 771-785. [LINK]
  • Porter, TJ, Pisaric, MFJ, Kokelj, SV, deMontigny, P (2013): A ring-width-based reconstruction of June-July minimum temperatures since AD 1245 from white spruce stands in the Mackenzie Delta region, northwestern Canada. Quaternary Research, 80: 167-179. [LINK]
  • Porter, TJ, Middlestead, P (2012): On estimating the precision of stable isotope ratios in processed tree-rings. Dendrochronologia, 30: 239-242. [LINK]
  • Porter, TJ, Pisaric, MFJ (2011): Temperature-growth divergence in white spruce forests of Old Crow Flats, Yukon Territory, and adjacent regions of northwestern North America. Global Change Biology, 11: 3418-3430. [LINK]
  • Wolfe, BB, Humphries, MM, Pisaric, MFJ, Balasubramaniam, AM, Burn, CR, Chan, L, Cooley, D, Froese, DG, Graupe, S, Hall, RI, Lantz, T, Porter, TJ, Roy-Leveillee, P, Turner, KW, Wesche, SD, Williams, M (2011): Environmental change and traditional use of the Old Crow Flats in northern Canada: An IPY opportunity to meet the challenges of the new northern research paradigm. Arctic, 64: 127-135. [LINK]
  • Porter, TJ, Pisaric, MFJ, Kokelj, SV, and Edwards, TWD (2009): Climate signals in δ13C and δ18O of tree-rings from white spruce in the Mackenzie Delta region, northern Canada. Arctic, Antarctic, and Alpine Research, 41: 497-505. [LINK]

Research Clusters:
Paleoclimate and Biogeography