Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    '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.

    We have a manual that explains all the features 

Record number 425146
Title Case study of the diurnal variability of chemically active species with respect to boundary layer dynamics during DOMINO
Author(s) Stratum, B.J.H. van; Vilà-Guerau de Arellano, J.; Ouwersloot, H.G.; Dries, K. van den; Laar, T.W. van; Martinez, M.; Lelieveld, J.; Diesch, J.M.; Drewnick, F.; Fischer, H.; Hosaynali Beygi, Z.; Harder, H.; Regelin, E.; Sinha, V.; Adame, J.A.; Sörgel, M.; Sander, R.; Bozem, H.; Song, W.; Williams, J.; Yassaa, N.
Source Atmospheric Chemistry and Physics 12 (2012). - ISSN 1680-7316 - p. 5329 - 5341.
DOI https://doi.org/10.5194/acp-12-5329-2012
Department(s) Meteorology and Air Quality
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) volatile organic-compounds - tropical forest - oh reactivity - isoprene - chemistry - campaign - air - segregation - turbulence - gabriel
Abstract We study the interactions between atmospheric boundary layer (ABL) dynamics and atmospheric chemistry using a mixed-layer model coupled to chemical reaction schemes. Guided by both atmospheric and chemical measurements obtained during the DOMINO (Diel Oxidant Mechanisms in relation to Nitrogen Oxides) campaign (2008), numerical experiments are performed to study the role of ABL dynamics and the accuracy of chemical schemes with different complexity: the Model for Ozone and Related chemical Tracers, version 4 (MOZART-4) and a reduced mechanism of this chemical system. Both schemes produce satisfactory results, indicating that the reduced scheme is capable of reproducing the O3-NOx-VOC-HOx diurnal cycle during conditions characterized by a low NOx regime and small O3 tendencies (less than 1 ppb per hour). By focusing on the budget equations of chemical species in the mixedlayer model, we show that for species like O3, NO and NO2, the influence of entrainment and boundary layer growth is of the same order as chemical production/loss. This indicates that an accurate representation of ABL processes is crucial in understanding the diel cycle of chemical species. By comparing the time scales of chemical reactive species with the mixing time scale of turbulence, we propose a classification based on the Damk¨ohler number to further determine the importance of dynamics on chemistry during field campaigns. Our findings advocate an integrated approach, simultaneously solving the ABL dynamics and chemical reactions, in order to obtain a better understanding of chemical pathways and processes and the interpretation of the results obtained during measurement campaigns.
Comments
There are no comments yet. You can post the first one!
Post a comment
 
Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.