Aerosol Mass Spectrometer Network Measurements during the EUCAARI/EMEP Intensive Measurement Campaigns

Transcription

1 Aerosol Mass Spectrometer Network Measurements during the EUCAARI/EMEP Intensive Measurement Campaigns Eiko Nemitz Centre for Ecology and Hydrology (CEH), United Kingdom On behalf of The EUCAARI / EMEP Aerosol Mass Spectrometer Team

2 Conception of the EMEP / EUCAARI AMS Network Rationale Aerosol climatology Dataset for validation of chemical transport models with unified methodology & high temporal resolution EMEP Monitoring Strategy (2-29) Intensive Measurement Periods European EUCAARI IP Intensive measurement periods April/May 28 - LONGREX Intensive year 28 Timing of national research activities

3 Sites of AMS Measurements during 28/9 EMEP/EUCAARI Campaigns

4 Deriving information on composition dependent CE by comparison with other instruments General High nitrate events study effect of f NO3 =NO 3 /total on CE External vs. internal mixing All aerosol instruments have their own issues Volume comparison against SMPS/DMPS Open volume size distribution Vacuum aerodynamic vs. electromobility diameter Aerosol size-distribution may change with composition (e.g. larger during nitrate events) EC missing Accuracy of CPC? NH 4 NO 3 losses in SMPS? Against other analysers (PILS, MARGA, R&P 84N) Different size cuts Different metric (e.g. water soluble) Inlet losses

5 Open SMPS Size Dist. (Barcelona, PSI) Low nitrate AMS calculated volume distribution agrees well with SMPS calculated volume distribution - sphericity assumption likely valid here d ve (nm) High nitrate d ve (nm) AMS total mass converted to vol, with diameter converted to d ve using Calculated density

6 Composition-dependent CE

7 Campaign Averages: Absolute composition of NR-PM 1

8 BU/GB33 MHD/IE31 CBW/NL11 HW/GB36 CHL PDD MSY/ES17 BAR JFJ/CH1 PAY/CH2 SPC KPO/HU2 FKL/GR2 MPZ/DE44 VHL/SE11 PUI SMR HEL

9 Campaign Averages: Relative Composition of NR-PM1

10 Sep/Oct 28 Common Scale

11 Feb/Mar 29 Common Scale

12 Sulphate Preliminary Results

13 Nitrate Preliminary Results

14 Overview on OA concentration and composition EMEP EUCAARI AMS campaigns General findings: [OA] between 1 8 μg m -3 OOA was ubiquiteous and dominated (% % OA) weak trend: low [OA] ~ high %SOA (can different, e.g., at urban sites) maximum [(P)OA]: Barcelona (urban) minimum [OA]: elevated sites (Jungfraujoch, Puy de Dôme)

15 Overview on OA concentration and composition Large variability within campaigns, e.g. OOA conc. in Barcelona/Monts (driven by meteorology) regional pollution thermal inversions Atlantic advection μg m -3 μg m -3 MSY BCN Sea 4 km 1. km

16 OOA oxygenated organic aerosol / secondary organic aer organic m/z s 43 and 44 content (f 43, f 44 ) 3% Triangle in Ng et al. (2) 3% f 44 (=% org 44 in OOA) 2% 2% % % % Montsen y Barcelon a OOA (Montseny, spring 29) OOA-1 (Finakolia, spring 29) EUCAARI triangle OOA-2 (Melpitz, fall 28) OOA-2 (Melpitz, spring 28) OOA-2 (Melpitz, spring 29) OOA-2 (Vavihill, spring 29) % EMEP EUCAARI campaigns % % % % 2% f 43 (=% org 43 in OOA)

17 Summary Powerful dataset to test European transport models for Synoptic transport (day-to-day) Emissions and thermodynamics (diurnal variability) Different controls between continental (local production & emission) and marine sites (transport, air mass) Nitrate Arguably best dataset on European nitrate to date Dominates inorganic aerosol fraction overall lower at European fringes (W Coast of Ireland, Crete, NE Scandinavia) and high altitude sites Significant NO 3- events in spring (meteorology ion & synoptic conditions; not due to National Muck Spreading Days ) Organics Split into HAO/LV-OOA/SV-OOA/BOA ongoing Valentin & Andre

18 Future Campaigns Next EMEP Intensive Measurement Periods Link with ACTRIS (FP7 Infrastructure Project) intensive year (212) Link to national / regional activities: ChArMEx, ClearfLo Summer vs. winter campaign 212 (dates to be decided) Urban / rural paired measurements More information on gas-phase precursors need to forge links with other groups (NH 3, HNO 3, HCl, SO 2, NO x, VOCs) US Activity?

19 Missing Data Revised dataset (also with composition dependent CE) e.g. K-Puszta, Montseny, Chilbolton, Jungfrau, Hourly data (half of the sites submitted in original time resolution) Size distributions (most sites missing) BY END OF SEPTEMBER!!!

20 PMF status on 3 September 2 Site April/May 28 Sep/Oct 28 Feb/Mar 29 Auchencorth/Bush UK IC OA data n.a. OA data n.a. Harwell/Chilbolton UK org29 issue 3-factor PMF Hyytiala FI OA data n.a. upgrade SQRL upgrade SQRL Puijo FI 1-factor PMF Helsinki FI 3-factor PMF Vavihill SE 3-factor PMF 3-factor PMF Cabauw NL min. error? IC time resolution? Melpitz DE 2-factor PMF 4-factor PMF 2-factor PMF Payerne CH 2-factor PMF 2-factor PMF Jungfraujoch CH org29 issue Mace Head IR PMF by author min. error? Puy de Dome FR 1-factor PMF min. error? San Pietro IT 2-factor PMF Finokalia GR 2-factor PMF 3-factor PMF K-Puszta HU 3-factor PMF Barcelona ES 3-factor PMF Montseny ES 3-factor PMF

21 Contributors Centre for Ecology and Hydrology (UK): Chiara Di Marco, Gavin Phillips, Eiko Nemitz Paul Scherrer Institute (CH): Andre Prevot, Peter De Carlo, Claudia Mohr, Valentin Lanz Edinburgh University (UK): Massimo Vieno University of Helsinki (FI): Mikko Äijälä, Mikael Ehn, Heikki Juninen University of Clermont-Ferrand (FR): Karine Sellegri, Ralf Weigel, Evelyn Freney University of Eastern Finland (FI): Petri Tiitta, Tomi Raatikainen, Ari Laaksonen Institute for Tropospheric Research (DE): Laurent Poulain, Gerald Spindler, Hartmut Herrmann Jülich Research Centre (DE): Amewu Mensah, Astrid Kiendler-Scharr, Thomas Mentel National University Ireland, Galway (IR): Manuel Dall Osto, Harald Berresheim, Darius Ceburnis, Jurgita Ovadnevaite, Colin O Dowd University of Manchester (UK): James Allan, Gerard Capes, Hugh Coe, Gordon McFiggans, Tom Choularton Lund University (SE): Joakim Pagels, Axel Eriksson, Erik Swietlicki Univ. Colorado, Boulder (USA): Jose Jimenez, Donna Sueper, Mike Cubison, Amber Ortega, Sanna Saarikoski Aerodyne Research Inc. (USA): Doug Worsnop, Sally Ng Finish Meteorological Institute (FI): Tomi Raatikainen, Samara Carbone, Ari Laaksonen Carnegie Mellon Univ. (USA): Lea Hildebrand University of Patras (GR): Spyros Pandis