In this study, Fc is observed at the local scale in two suburban neighborhoods of Vancouver, BC, Canada. Both neighborhoods are composed of single family residences, but one neighborhood has substantially fewer trees and approximately twice the number of homes per area. Fc is observed using the eddy covariance method on two 28 m towers (approximately three times the mean building height). Surface conditions (surface wetness, soil temperature, volumetric water content, and soil respiration) are monitored at eight lots in the footprint area of the towers.
We discuss Fc observed at the two neighborhoods during a two-month period in summer 2008 and in comparison to a simultaneously operated flux tower at a rural reference site. Fluxes are discussed in terms of source area characteristics, traffic patterns, and effects of urban water use and irrigation.