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Source Contributions to 2012 Summertime Aerosols in the Euro-mediterranean Region : Volume 15, Issue 14 (21/07/2015)

By Rea, G.

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Book Id: WPLBN0003980793
Format Type: PDF Article :
File Size: Pages 24
Reproduction Date: 2015

Title: Source Contributions to 2012 Summertime Aerosols in the Euro-mediterranean Region : Volume 15, Issue 14 (21/07/2015)  
Author: Rea, G.
Volume: Vol. 15, Issue 14
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Menut, L., Siour, G., Briant, R., Rea, G., Mailler, S., & Turquety, S. (2015). Source Contributions to 2012 Summertime Aerosols in the Euro-mediterranean Region : Volume 15, Issue 14 (21/07/2015). Retrieved from

Description: Laboratoire de Météorologie Dynamique, UMR CNRS 8539, Université Pierre et Marie Curie – Paris 6, ENPC, Ecole Polytechnique, Palaiseau, France. In the Mediterranean area, aerosols may originate from anthropogenic or natural emissions (biogenic, mineral dust, fire and sea salt) before undergoing complex chemistry. In case of a huge pollution event, it is important to know whether European pollution limits are exceeded and, if so, whether the pollution is due to anthropogenic or natural sources. In this study, the relative contribution of emissions to surface PM10, surface PM2.5 and total aerosol optical depth (AOD) is quantified. For Europe and the Mediterranean regions and during the summer of 2012, the WRF and CHIMERE models are used to perform a sensitivity analysis on a 50 km resolution domain (from −10° W to 40° E and from 30° N to 55° N): one simulation with all sources (reference) and all others with one source removed. The reference simulation is compared to data from the AirBase network and two ChArMEx stations, and from the AERONET network and the MODIS satellite instrument, to quantify the ability of the model to reproduce the observations. It is shown that the correlation ranges from 0.19 to 0.57 for surface particulate matter and from 0.35 to 0.75 for AOD. For the summer of 2012, the model shows that the region is mainly influenced by aerosols due to mineral dust and anthropogenic emissions (62 and 19 %, respectively, of total surface PM10 and 17 and 52 % of total surface PM2.5). The western part of the Mediterranean is strongly influenced by mineral dust emissions (86 % for surface PM10 and 44 % for PM2.5), while anthropogenic emissions dominate in the northern Mediterranean basin (up to 75 % for PM2.5). Fire emissions are more sporadic but may represent 20 % of surface PM2.5, on average, during the period near local sources. Sea salt mainly contributes for coastal sites (up to 29 %) and biogenic emissions mainly in central Europe (up to 20 %).

The same analysis was undertaken for the number of daily exceedances of the European Union limit of 50 μg m−3 for PM10 (over the stations), and for the number of daily exceedances of the WHO recommendation for PM2.5 (25 μg m−3), over the western part of Europe and the central north. This number is generally overestimated by the model, particularly in the northern part of the domain, but exceedances are captured at the right time. Optimized contributions are computed with the observations, by subtracting the background bias at each station and the specific peak biases from the considered sources. These optimized contributions show that if natural sources such as mineral dust and fire events are particularly difficult to estimate, they were responsible exclusively for 35.9 and 0.7 %, respectively, of the exceedances for PM10 during the summer of 2012. The PM25 recommendation of 25 μg m−3 is exceeded in 21.1 % of the cases because of anthropogenic sources exclusively and in 0.02 % because of fires. The other exceedances are induced by a mixed contribution between mainly mineral dust (49.5–67 % for PM10 exceedance contributions, 4.4–13.8 % for PM2.5), anthropogenic sources (14.9–24.2 % and 46.3–80.6 %), biogenic sources (4.1–15.7 % and 12.6–30 %) and fires (2.2–7.2 % and 1.6–12.4 %).

Source contributions to 2012 summertime aerosols in the Euro-Mediterranean region

Alfaro, S. C. and Gomes, L.: Modeling mineral aerosol production by wind erosion: Emission intensities and aerosol size distributions in source areas, J. Geophys. Res.-Atmos., 106, 18075–18084, doi:10.1029/2000JD900339, 2001.; Anttila, P., Stefanovska, A., Nestorovska-Krsteska, A., Grozdanovski, L., Atanasov, I., Golubov, N., Ristevski, P., Toceva, M., Lappi, S., and Walden, J.: Characterisation of extreme air pollution episodes in an urban valley in the Balkan Peninsula, Air Quality, Atmosphere & Health, 1–13, doi:10.1007/s11869-015-0326-7, 2015.; Barnaba, F., Angelini, F., Curci, G., and Gobbi, G. P.: An important fingerprint of wildfires on the European aerosol load, Atmos. Chem. Phys., 11, 10487–10501, doi:10.5194/acp-11-10487-2011, 2011.; Bian, H. and Prather, M.: Fast-J2: accurate simulation of stratospheric photolysis in global chemical models, J. Atmos. Chem., 41, 281–296, 2002.; Bessagnet, B., Hodzic, A., Vautard, R., Beekmann, M., Cheinet, S., Honoré, C., Liousse, C., and Rouil, L.: Aerosol modeling with CHIMERE: preliminary evaluation at the continental scale, Atmos. Environ., 38, 2803–2817, doi:10.1016/j.atmosenv.2004.02.034, 2004.; Boldo, E., Medina, S., Le Tertre, A., Hurley, F., Mücke, H.-G., Ballester, F., and Aguilera, I.: Apheis: Health impact assessment of long-term exposure to PM2.5 in 23 European cities, Eur. J. Epidemiol., 21, 449–458, 2006.; Boselli, A., Caggiano, R., Cornacchia, C., Madonna, F., Mona, L., Macchiato, M., Pappalardo, G., and Trippetta, S.: Multi year sun-photometer measurements for aerosol characterization in a Central Mediterranean site, Atmos. Res., 104, 98–110, 2012.; Boylan, J. W. and Russell, A. G.: PM and light extinction model performance metrics, goals, and criteria for three-dimensional air quality models, Atmos. Environ., 40, 4946–4959, 2006.; Briant, R., Menut, L., Siour, G., and Prigent, C.: Homogeneized modeling of mineral dust emissions over Europe and Africa using the CHIMERE model, Geosci. Model Dev. Discuss., 7, 3441–3480, doi:10.5194/gmdd-7-3441-2014, 2014.; Burr, M. and Zhang, Y.: Source apportionment of fine particulate matter over the Eastern US Part II: source apportionment simulations using CAMX/PSAT and comparisons with CMAQ source sensitivity simulations., Atmos. Pollut. Res., 2, 318–336, doi:10.5094/APR.2011.037, 2011.; Carslaw, K. S., Boucher, O., Spracklen, D. V., Mann, G. W., Rae, J. G. L., Woodward, S., and Kulmala, M.: A review of natural aerosol interactions and feedbacks within the Earth system, Atmos. Chem. Phys., 10, 1701–1737, doi:10.5194/acp-10-1701-2010, 2010.; Chen, F. and Dudhia, J.: Coupling an advanced land surface-hydrology model with the Penn State-NCAR MM5 modeling system. Part I: Model implementation and sensitivity, Mon. Weather Rev., 129, 569–585, 2.0.CO;2>doi:10.1175/1520-0493(2001)129<0569:CAALSH>2.0.CO;2, 2001.; Curci, G., Palmer, P. I., Kurosu, T. P., Chance, K., and Visconti, G.: Estimating European volatile organic compound emissions using satellite observations of formaldehyde from the Ozone Monitoring Instrument, Atmos. Chem. Phys., 10, 11501–11517, doi:10.5194/acp-10-11501-2010, 2010.; Curci, G., Hogrefe, C., Bianconi, R., Im, U., Balzarini, A., Baró, R., Brunner, D., Forkel, R., Giordano, L., Hirtl, M., Honzak, L., Jiménez-Guerrero, P., Knote, C., Langer, M., Makar, P. A., Pirovano, G.


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