High-resolution emission inventory of the Lombardy region: development and comparison with measurements

Dommen, Josef; Prévôt, Andrê S. H.; Baertsch-Ritter, N; Maffeis, Giuseppe; Longoni, Maria Grazia; Grüebler, Franca C.; Thielmann, Axel

doi:10.1016/s1352-2310(03)00507-7

Cited by 29 publications

(20 citation statements)

References 27 publications

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“…However, since TMB SOA is only slightly hygroscopic (Duplissy et al, 2011), the fraction of water in the particles is only minor.…”

Section: Partitioning Theorymentioning

confidence: 99%

“…They play a major role in urban areas and can represent 13-44 % of the total hydrocarbon mass in the atmosphere (Calvert, 2002;Dommen et al, 2003;Molina et al, 2007;Vega et al, 2011). As a result of their oxidation, products with lower volatility are formed, which contribute to the formation of secondary organic aerosol (SOA; Kroll and Seinfeld, 2008;Hallquist et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Online measurements of water-soluble organic acids in the gas and aerosol phase from the photooxidation of 1,3,5-trimethylbenzene

et al. 2014

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Abstract. The formation of organic acids during photooxidation of 1,3,5-trimethylbenzene (TMB) in the presence of NO x was investigated with an online ion chromatography (IC) instrument coupled to a mass spectrometer (MS) at the Paul Scherrer Institute's smog chamber. Gas and aerosol phase were both sampled. Molecular formulas were attributed to 12 compounds with the help of high-resolution MS data from filter extracts (two compounds in the gas phase only, two in the aerosol phase only and eight in both). Seven of those species could be identified: formic acid, acetic acid, glycolic acid, butanoic acid, pyruvic acid, lactic acid and methylmaleic acid. While the organic acid fraction present in the aerosol phase does not strongly depend on the precursor concentration (6 to 20 %), the presence of SO 2 reduces this amount to less than 3 % for both high and low precursor concentration scenarios. A large amount of acetic acid was injected during one experiment after aerosol formation, but no increase of acetic acid particle concentration could be observed. This indicates that the unexpected presence of volatile organic acids in the particle phase might not be due to partitioning effects, but to reactive uptake or to sampling artefact.

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“…However, since TMB SOA is only slightly hygroscopic (Duplissy et al, 2011), the fraction of water in the particles is only minor.…”

Section: Partitioning Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Online measurements of water-soluble organic acids in the gas and aerosol phase from the photooxidation of 1,3,5-trimethylbenzene

et al. 2014

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“…The model allows the description of regional-scale processes, simulating the effects of emissions, diffusion, advection, chemical transformation and surface removal processes. The chemistry is described by the Carbon Bond Mechanism IV (CBM-IV), which includes 94 chemical reactions (Gery et al, 1989). The reaction rate constants in the model were updated based on Atkinson et al, 1997.…”

Section: Model Descriptionmentioning

confidence: 99%

“…It contains 4 inorganic (NO, NO 2 , CO, SO 2 ) and 12 ROG species (HCHO, ALD2, PAR, OLE, ETH, TOL, CRES, XYL, ISOP, MEOH, ETOH and METH) (Gery et al, 1989). All presented simulations are run on the basis of a 3 km×3 km grid size resolution of the emission inventory.…”

Section: Design Of Various Spatially Coarser Emission Inventoriesmentioning

confidence: 99%

Effects of various meteorological conditions and spatial emissionresolutions on the ozone concentration and ROG/NO<sub>x</sub> limitationin the Milan area (I)

et al. 2004

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Abstract. The three-dimensional photochemical model UAM-V is used to investigate the effects of various meteorological conditions and of the coarseness of emission inventories on the ozone concentration and ROG/NO x limitation of the ozone production in the Po Basin in the northern part of Italy. As a base case, the high ozone episode with up to 200 ppb on 13 May 1998 was modelled and previously thoroughly evaluated with measurements gained during a large field experiment. Systematic variations in meteorology are applied to mixing height, air temperature, specific humidity and wind speed. Three coarser emission inventories are obtained by resampling from 3×3 km 2 up to 54×54 km 2 emission grids. The model results show that changes in meteorological input files strongly influence ozone in this area. For instance, temperature changes peak ozone by 10.1 ppb/ • C and the ozone concentrations in Milan by 2.8 ppb/ • C. The net ozone formation in northern Italy is more strongly temperature than humidity dependent, while the humidity is very important for the ROG/NO x limitation of the ozone production. For all meteorological changes (e.g. doubling the mixing height), the modelled peak ozone remains ROG limited. A strong change towards NO x sensitivity in the ROG limited areas is only found if much coarser emission inventories were applied. Increasing ROG limited areas with increasing wind speed are found, because the ROG limited ozone chemistry induced by point sources is spread over a larger area. Simulations without point sources tend to increase the NO x limited areas.

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“…These inventories covered areas as large as Europe (Friedrich and Reis 2004;Lenhart and Friedrich 1995) down to regional or more local scales (Dommen et al 2003;Ponche et al 2000). Various researchers determined the characteristics for the quantification of atmospheric pollutants emitted in the countries of the southern Balkan region (e.g.…”

Section: Introductionmentioning

confidence: 99%

A Spatially and Temporally Disaggregated Anthropogenic Emission Inventory in the Southern Balkan Region

Poupkou

Symeonidis

Ziomas

et al. 2007

Water Air Soil Pollut

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A spatially and temporally resolved atmospheric emission inventory of ozone precursor pollutants (NOx, NMVOCs and CO) was developed for the southern Balkan region in order to support air quality modelling studies focusing on Greece. The inventory is established for the reference year 2000 and it has 10 km spatial resolution. Annual anthropogenic emission data obtained from official national emission inventories and from international emission databases were spatially disaggregated and allocated to a gridded domain using the top-down methodology. Source specific temporal profiles were used in order monthly and hourly emission data to be estimated. In the study area, the highest NOx amounts are emitted by the maritime and road transport sectors. Road transport has a prominent role in anthropogenic NMVOCs emissions followed by the solvent and other product use sector. The main CO emission sources are represented by the road transport sector and the non-industrial combustion plants. In the present study, the contribution of the transport sector to the total emissions of pollutants over urban and non-urban areas of Greece is investigated. Over almost all Greek urban areas, road transport is the major NMVOCs and CO emission source. Road transport contribution to NOx emissions is greater than 50% at the large urban centres of Greece. The greater part of non-urban areas is dominated by offroad vehicle emissions.

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High-resolution emission inventory of the Lombardy region: development and comparison with measurements

Cited by 29 publications

References 27 publications

Online measurements of water-soluble organic acids in the gas and aerosol phase from the photooxidation of 1,3,5-trimethylbenzene

Online measurements of water-soluble organic acids in the gas and aerosol phase from the photooxidation of 1,3,5-trimethylbenzene

Effects of various meteorological conditions and spatial emissionresolutions on the ozone concentration and ROG/NO<sub>x</sub> limitationin the Milan area (I)

A Spatially and Temporally Disaggregated Anthropogenic Emission Inventory in the Southern Balkan Region

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High-resolution emission inventory of the Lombardy region: development and comparison with measurements

Cited by 29 publications

References 27 publications

Online measurements of water-soluble organic acids in the gas and aerosol phase from the photooxidation of 1,3,5-trimethylbenzene

Online measurements of water-soluble organic acids in the gas and aerosol phase from the photooxidation of 1,3,5-trimethylbenzene

Effects of various meteorological conditions and spatial emissionresolutions on the ozone concentration and ROG/NO&lt;sub&gt;x&lt;/sub&gt; limitationin the Milan area (I)

A Spatially and Temporally Disaggregated Anthropogenic Emission Inventory in the Southern Balkan Region

Contact Info

Product

Resources

About

Effects of various meteorological conditions and spatial emissionresolutions on the ozone concentration and ROG/NO<sub>x</sub> limitationin the Milan area (I)