Scott Krayenhoff

Headshot of Scott Krayenhoff
Associate Professor
Phone number: 
(519) 824-4120 Ext. 56868
Alexander Hall Room 108

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Ph.D. Geography, University of British Columbia
M.Sc. Geography, University of Western Ontario
B.Sc. (Hons) Atmospheric Science, University of British Columbia

Research overview

I study the impacts of urban and agricultural development on local climate. I develop and apply numerical models across multiple scales, from individual streets to whole cities and their rural surroundings. Model applications include assessment of urban heat islands and their causation, mitigation of urban heat with vegetation and reflective surfaces, assessment of pedestrian thermal comfort, and dynamical downscaling of global climate model projections. I have particular expertise on modelling the local climate impacts of urban street tree planting. For example, I try to understand how much cooler our cities will be in summertime if more trees are planted, and how this might help offset projected warming from climate change. My work spans the majority of topics treated in the recent text Urban Climates by Oke et al. (2017).


----- May 2024: I currently have one PhD position available. This position will focus on advanced development and application of urban climate modelling tools. The research scope is likely to be adaptation to heat waves via street trees and other novel infrastructures. A background in Atmospheric Science/Meteorology or closely related field is strongly preferred. Excellent quantitative skills as evidenced by the applicant's academic and/or professional background are required. Please email me if you think you may qualify. The position will remain open until filled with a suitable candidate. -----


Research Foci

Urban heat islands
Cooling hot cities / climate change adaptation
Regional climate modeling and dynamical downscaling
Local climate effects of urban trees
Pedestrian thermal comfort
Urban meteorological model development
Urban thermal anisotropy
Climate impacts of photovoltaic arrays
Canopy micrometeorology

Select recent publications (for complete list, see Google Scholar profile)


  • Lachapelle, J.A., Krayenhoff, E.S., Middel, A., Coseo, P., Warland, J. 2023. Maximizing the pedestrian radiative cooling benefit per street tree. Landscape and Urban Planning. 230, 104608. READ NOW HERE.
  • Middel, A., Huff, M., Krayenhoff, E.S., Udupa, A., Schneider, F.A. 2023. PanoMRT: Panoramic infrared thermography to model human thermal exposure and comfort. Sci Tot Environ, 160301.
  • Stone, B., Gronlund, C., Mallen, E., Hondula, D., O’Neill, M., Rajput, M., Grijalva, S., Lanza, K., Harlan, S., Larsen, L., Augenbroe, G., Krayenhoff, E.S., Broadbent, A., Georgescu, M. 2023. How Blackouts During Heatwaves Amplify Mortality and Morbidity Risk, Environ Sci Tech.
  • Nazarian, N., Krayenhoff, E.S., Bechtel, B., Hondula, D., Paolini, R., Vanos, J., Cheung, T., Chow, W.T.L., de Dear, R., Jay, O., Lee, J.K.W., Martilli, A., Middel, A., Norford, L.K., Sadeghi, M., Schiavon, S., Santamouris, S., 2022. Integrated assessment of urban overheating impacts on human life. Earth’s Future, 10, e2022EF002682.
  • Segura, R., Krayenhoff, E.S., Martilli, A., Badia, A., Estruch, C., Ventura, S., Villalba, G. 2022. How do street trees affect urban temperatures and radiation exchange? Observations and numerical evaluation in a highly compact city. Urban Climate 46, 101288.
  • Lachapelle, J.A., Krayenhoff, E.S., Middel, A., Meltzer, S., Broadbent, A.M., Georgescu, M., 2022. A microscale three-dimensional model of urban outdoor thermal exposure (TUF-Pedestrian). International Journal of Biometeorology. READ NOW HERE.
  • Broadbent, A.M., Declet-Barreto, J., Krayenhoff, E.S., Harlan, S.L. and Georgescu, M., 2022. Targeted implementation of cool roofs for equitable urban adaptation to extreme heat. Science of The Total Environment, 811, p.151326.
  • Moradi, M., Krayenhoff, E.S., Aliabadi, A.A. 2022. A comprehensive indoor-outdoor urban climate model with hydrology: The Vertical City Weather Generator (VCWG v2.0.0). Building and Environment, 108406.
  • Stewart, I.D., Krayenhoff, E.S., Voogt, J.A., Lachapelle, J.A., Allen, M.A., Broadbent, A.M., 2021. Time evolution of the surface urban heat island. Earth’s Future, 9, e2021EF002178.
  • Krayenhoff, E.S., Broadbent, A., Zhao, L., Georgescu, M., Middel, A., Voogt, J.A., Martilli, A., Sailor, D.J. and Erell, E., 2021, Cooling hot cities: A systematic and critical review of the numerical modelling literature. Environmental Research Letters. READ NOW HERE.
  • Zhao, L., Oleson, K., Bou-Zeid, E., Krayenhoff, E.S., Bray, A., Zhu, Q., Zheng, Z., Chen, C. and Oppenheimer, M., 2021, Global multi-model projections of local urban climates. Nature Climate Change.
  • Stone Jr, B., Mallen, E., Rajput, M., Gronlund, C.J., Broadbent, A.M., Krayenhoff, E.S., Augenbroe, G., O’Neill, M.S. and Georgescu, M., 2021. Compound Climate and Infrastructure Events: How Electrical Grid Failure Alters Heat Wave Risk. Environmental Science & Technology.
  • Heusinger, J., Broadbent, A.M., Krayenhoff, E.S. and Weber, S., 2021. Adaptation of a photovoltaic energy balance model for rooftop applications. Building and Environment, 192, p.107628.
  • Georgescu, M., Broadbent, A.M., Wang, M., Krayenhoff, E.S. and Moustaoui, M., 2021. Precipitation response to climate change and urban development over the continental United States. Environmental Research Letters, 16(4), p.044001.
  • Broadbent, A.M., Krayenhoff, E.S. and Georgescu, M., 2020. The motley drivers of heat and cold exposure in 21st century US cities. Proceedings of the National Academy of Sciences, 117(35), 21108-21117.
  • Mussetti, G., Brunner, D., Henne, S., Allegrini, J., Krayenhoff, E.S., Schubert, S., Feigenwinter, C., Vogt, R., Wicki, A. and Carmeliet, J., 2020. COSMO-BEP-Tree v1. 0: a coupled urban climate model with explicit representation of street trees. Geoscientific Model Development, 13(3), pp.1685-1710.
  • Martilli, A., Roth, M., Chow, W.T., Demuzere, M., Lipson, M., Krayenhoff, E.S., Sailor, D., Nazarian, N., Voogt, J., Wouters, H. and Middel, A., 2020. Summer average urban-rural surface temperature differences do not indicate the need for urban heat reduction. OSF Preprints,
  • Krayenhoff, E.S., T. Jiang, A. Christen, A. Martilli, T.R. Oke, B. Bailey, N. Nazarian, J.A. Voogt, M. Giometto, A. Stastny, B. Crawford. 2020. A multi-layer urban canopy meteorological model with trees: Street tree impacts on pedestrian-level climate. Urban Climate, 32, 100590.
  • Broadbent, A., E.S. Krayenhoff, M. Georgescu. 2020. Efficacy of cool roofs at reducing pedestrian-level air temperature during projected 21st century heat waves in Atlanta, Detroit, and Phoenix. Environ Res Lett., 15(8), 084007.
  • Martilli, A.M., E.S. Krayenhoff, N. Nazarian. 2020. Is the Urban Heat Island intensity relevant for heat mitigation studies? Urban Climate, 31, 100541.
  • Iwaniec, D.M., Cook, E.M., Davidson, M.J., Berbés-Blázquez, M., Georgescu, M., Krayenhoff, E.S., Middel, A., Sampson, D.A. and Grimm, N.B., 2020. The co-production of sustainable future scenarios. Landscape and Urban Planning, 197, p.103744.
  • Nazarian, N., Krayenhoff, E.S. and Martilli, A., 2020. A one-dimensional model of turbulent flow through” urban” canopies (MLUCM v2. 0): updates based on large-eddy simulation. Geoscientific Model Development, 13(3)
  • Middel, A., E.S. Krayenhoff. 2019. Micrometeorological determinants of pedestrian thermal exposure during record-breaking heat in Tempe, Arizona: Introducing the MaRTy observational platform. Sci Tot Environ 687, 137-151.
  • Broadbent, A.M., E.S. Krayenhoff, M. Georgescu, D. Sailor. 2019. The observed effects of utility-scale photovoltaics on near-surface air temperature and energy balance. J Appl Meteorol Climatol 58, 989-1006.
  • Krayenhoff, E.S., M. Moustaoui, A.M. Broadbent, V. Gupta, M. Georgescu. 2018. Diurnal interaction between urban expansion, climate change and adaptation in US citiesNature Climate Change 8, 1097-1103 (READ NOW HERE)
  • Crawford, B., E.S. Krayenhoff, P. Cordy. 2018. The urban energy balance of a lightweight low-rise neighborhood in Andacollo, Chile. Theor Appl Climatol 131, 55-68.
  • Hondula, D.M., R.C. Balling, R. Andrade, E.S. Krayenhoff, A. Middel, A. Urban, M. Georgescu, D. Sailor. 2017. Biometeorology for cities. Int J Biometeorol DOI: 10.1007/s00484-017-1412-3.Krayenhoff, E.S., and J.A. Voogt. 2016. Daytime thermal anisotropy of urban neighbourhoods: morphological causation. Remote Sens. 8, 108.
  • Krayenhoff, E.S., J.-L. Santiago, A. Martilli, A. Christen, and T.R. Oke. 2015. Parameterization of drag and turbulence for urban neighbourhoods with trees. Boundary-Layer Meteorol. 156, 157-189.
  • Santiago, J.-L., Krayenhoff, E.S., and A. Martilli. 2014.  Microscale flow simulations for simplified urban configurations with realistic distributions of surface thermal forcing. Urban Climate 9, 115-133.
  • Krayenhoff, E.S., A. Christen, A. Martilli, and T.R. Oke. 2014: A multi-layer radiation model for urban neighbourhoods with trees. Boundary-Layer Meteorol. 151, 139-178.
  • Stewart, I.D., T.R. Oke, and E.S. Krayenhoff, 2014: Evaluating ‘Local Climate Zones’ with field observations and model simulations. Int. J. Climatol. 34, 1062-1080.
  • Grimmond C.S.B., M. Blackett, M. Best, and co-authors (including E.S. Krayenhoff). 2011: Initial results from Phase 2 of the International Urban Energy Balance Comparison Project, Int. J. Climatol. 31, 244-272.

Area of Research

Earth and Atmospheric Sciences