Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 403660
Title Investigation of carbon monoxide time evolution over the city of São Paulo during the nighttime using LES model
Author(s) Wilde Barbaro, E.; Oliveira, A.P.; Soares, J.
Source In: The 90th American Meteorological Society Annual Meeting , Atlanta, GA, USA, 17 - 21 January, 2010. - Boston : AMS - p. 4.4 (9 pp) - 4.4 (9 pp).
Event Boston : AMS The 90th American Meteorological Society Annual Meeting, Atlanta, GA, USA, 2010-01-17/2010-01-21
Department(s) Meteorology and Air Quality
WIMEK
Publication type Abstract in scientific journal or proceedings
Publication year 2010
Abstract The main objective of this work is to investigate the role play by the inversion layer and low level jet on the carbon monoxide (CO) time evolution at the surface in the city of Sao Paulo, Brazil. This investigation is based on numerical simulations of the stable PBL using the large-eddy simulation model (LES). The computations were applied over a one kilometer square flat terrain and homogeneous land use area located in the city of Sao Paulo. The surface emission of CO is estimated from inventory of annual emission of 7 million vehicles, assuming that the CO is mainly originated from incomplete fuel burning. With a population of about 11 million inhabitants, the city of Sao Paulo is characterized by air pollution events with high concentrations of CO at the surface during wintertime, mainly during nighttime period, associated to the intense surface inversion. The numerical simulations, using a prescribed surface flux of CO and sensible heat, indicated that the CO concentration at the surface of Sao Paulo is mainly modulated by the inversion layer intensity and the low level jet position. The vertical distributions of the second order statistic moments for CO and temperature are also strongly regulated by the low level jet main features.
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