2017
DOI: 10.5194/gmd-2017-102
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Evaluation of high-resolution GRAMM/GRAL NO<sub>x</sub> simulations over the city of Zurich, Switzerland

Abstract: Abstract. Hourly NOx concentrations were simulated for the city of Zurich, Switzerland, at 10 m resolution for the years 2013–2014. The simulations were generated with the nested mesoscale meteorology and microscale dispersion model system GRAMM/GRAL (versions v15.12/v14.8) by applying a catalogue-based approach. This approach was specifically designed to enable long-term city-wide building-resolving simulations with affordable computation costs. It relies on a discrete set of possible weather situations and c… Show more

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Cited by 1 publication
(4 citation statements)
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“…Unstable, and slightly unstable atmospheric stability classes were taken in the simulations. The choice of these specific stability classes is based on the Pasquill table [18]. The different scenarios are summarized in Table 2 for the small domain and in Table 3 for the large scale domain.…”
Section: Meteorological Conditionsmentioning
confidence: 99%
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“…Unstable, and slightly unstable atmospheric stability classes were taken in the simulations. The choice of these specific stability classes is based on the Pasquill table [18]. The different scenarios are summarized in Table 2 for the small domain and in Table 3 for the large scale domain.…”
Section: Meteorological Conditionsmentioning
confidence: 99%
“…Fig. 13-g shows a plot of the normalized fist floor proxy indicator versus floor number for these four scenarios (13,18, wind speeds of 4 and 1 m/s and stack heights of 2 meters above the roof top (scenarios 13 and 29) and 4 meters above the ground level (scenarios 18 and 30). The plot shows that, for wind speed of 4 m/s, moving the stacks from street level to above roof tops significantly reduces the exposure of residents of all floors.…”
Section: Effect Of Stack Heightsmentioning
confidence: 99%
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