Scott Krayenhoff

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

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

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).


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)


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.


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 (Accepted - READ NOW HERE).

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. (Accepted)

Martilli, A.M., E.S. Krayenhoff, N. Nazarian. 2020. Is the Urban Heat Island intensity relevant for heat mitigation studies? Urban Climate (Accepted).

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.

Aminipouri, M., A.J. Knudby, E.S. Krayenhoff, K. Zickfield, A. Middel. 2019. Modelling the impact of increased street tree cover on mean radiant temperature across Vancouver’s local climate zones. Urban Forestry & Urban Greening 39, 9-17.

Broadbent, A.M., A.M. Coutts, K.A. Nice, M. Demuzere, E.S. Krayenhoff, N.J. Tapper, H. Wouters. 2019. The Air-temperature Response to Green/blue-infrastructure Evaluation Tool (TARGET v1.0): an efficient and user-friendly model of city cooling. Geophysical Model Development 12, 785-803.

Krayenhoff, E.S., M. Moustaoui, A.M. Broadbent, V. Gupta, M. Georgescu. 2018. Diurnal interaction between urban expansion, climate change and adaptation in US cities. Nature Climate Change 8, 1097-1103 (READ NOW HERE)

Park. C.Y., D.K. Lee, E. S. Krayenhoff, H. K. Heo, S. Ahn, T. Asawa, A. Murakami, H. G. Kim. 2018. A multi-layer mean radiant temperature model for pedestrians in a street canyon with trees. Build and Environ 141, 298-309.

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.
Aliabadi, A.A., E.S. Krayenhoff, N. Nazarian, P.R. Armstrong, A. Afshari, L.K. Norford. 2017. Effects of roof edge roughness on air temperature and pollutant concentration in urban canyons. Boundary-Layer Meteorol. 164, 249-279.
Krayenhoff, E.S., and J.A. Voogt. 2016. Daytime thermal anisotropy of urban neighbourhoods: morphological causation. Remote Sens. 8, 108.
Tsin, P.K., A. Knudby, E.S. Krayenhoff, H.C. Ho, M. Brauer, S.B. Henderson. 2016. Microscale mobile monitoring of urban air temperature, Urban Climate 18, 58-72.
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.
Yaghoobian, N., J. Kleissl, E.S. Krayenhoff. 2010: Modeling the thermal effects of artificial turf on the urban environment, J. Appl. Meteorol. Climatol. 49, 332-345.
Krayenhoff, E.S., and J.A. Voogt. 2010: Impacts of urban albedo increase on local air temperature at daily through annual time scales: Model results and synthesis of previous work, J. Appl. Meteorol. Climatol. 49, 1634-1648.

Area of Research

Earth and Atmospheric Sciences