Introduction: European Integrated Project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) – integrating aerosol research from nano to global scales

Abstract

Abstract. The European Aerosol Cloud Climate and Air Quality Interactions project EUCAARI is an EU ResearchFramework 6 integrated project focusing on understanding the interactions of climate and air pollution. EUCAARI works in an integrative and multidisciplinary way from nanoto global scale. EUCAARI brings together several leading European research groups, state-of-the-art infrastructure and some key scientists from third countries to investigate the role of aerosol on climate and air quality. Altogether 48 partners from 25 countries are participating in EUCAARI. During the first 16 months EUCAARI has built operational systems, e.g. established pan-European measurement network for Lagrangian studies and four stations in developing countries. Also an improved understanding of nanoscale processes (like nucleation) has been implemented in global models. Here we present the research methods, organisation, operations and first results of EUCAARI.Correspondence to: M. Kulmala

Formation of highly oxygenated organic aerosol in the atmosphere: Insights from the Finokalia Aerosol Measurement Experiments

“…[7] Measurements were conducted at the Finokalia Station of the Environmental Chemical Processes Laboratory of the University of Crete [Hildebrandt et al, 2010] as part of the EUCAARI intensive campaigns [Kulmala et al, 2009]. Detailed results from FAME-08 have been published [Hildebrandt et al, 2010;Lee et al, 2010;Pikridas et al, 2010], and details on FAME-09 will be presented elsewhere.…”

Seasonal variation of CCN concentrations and aerosol activation properties in boreal forest

“…In addition to primary natural and anthropogenic sources, increasing empirical evidence has been obtained on secondary CCN production in the atmosphere via nucleation and growth of new aerosol particles (Lihavainen et al, 2003;Laaksonen et al, 2005; Published by Copernicus Publications on behalf of the European Geosciences Union.…”

“…S.-L. Sihto et al: CCN concentrations and aerosol activation properties in boreal forest Kuwata et al, 2008;Kuang et al, 2009;Wiedensohler et al, 2009). Recent model studies indicate that secondary production may be an important CCN source in the global atmosphere (Spracklen et al, 2008a;Makkonen et al, 2009;Wang and Penner, 2009;Kazil et al, 2010;Yu, 2011), even though uncertainties in the overall magnitude of this source are still quite large (Pierce and Adams, 2009).…”

Estimation of aerosol water and chemical composition from AERONET Sun–sky radiometer measurements at Cabauw, the Netherlands

“…In order to assess the representativity of the optimized aerosol composition, the model results are compared to surface aerosol measurements from the IMPACT campaign (Kulmala et al, 2011;Mensah et al, 2012), carried out at Cabauw in the Netherlands as part of the European Integrated Project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI, Kulmala et al, 2009Kulmala et al, , 2011 Tang (1996), 10 Weast (1985, 11 Köpke et al (1997) the optimized size distribution with surface measurements is not possible due to technical problems with the scanning mobility particle sizer (SMPS, a modified TSI Inc. model 3034) and the CPC (TSI Inc. model 3762). We note that aerosol hygroscopicity measurements (90 % RH growth factors) from a hygroscopicity tandem differential mobility analyzer (H-TDMA) are available for particle radii D p ≤ 165 nm (http://ebas.nilu.no/), but their quality is unknown as the data are as yet unpublished.…”

“…In an iterative procedure the modeled aerosol properties are optimized in order to minimize the differences between observations and the model results. The resulting aerosol properties are compared with detailed measurements, with a focus on chemical composition, from the measurement campaign IMPACT (Intensive Measurement Period At the Cabauw Tower; Kulmala et al, 2009;2011;Mensah et al, 2012) during May 2008. Aerosol characteristics resulting from this method can be used for a more consistent comparison of modeled and remotely sensed aerosol properties, as well as for a better understanding of aerosol-humidity and aerosol-cloud interactions (Feingold, 2003;Jeong et al, 2007;Koren et al, 2007;Roelofs and Kamphuis, 2009).…”