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The EUCAARI / EMEP Aerosol Mass Spectrometer Team

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Presentation on theme: "The EUCAARI / EMEP Aerosol Mass Spectrometer Team"— Presentation transcript:

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

2 Real-Time Sites AMS: NR PM1 – NH4+, SO42-, NO3-, Cl-, Org Mass
June ‘06 Jan/Feb ’07 April/May ‘08 Sep/Oct ‘08 Feb/Mar ’09 Auchencorth/Bush UK Q-AMS/IC IC Harwell/Chilbolton HR-AMS/IC Hyytiala FI C-AMS C-AMS/NH3 Puijo Q-AMS Helsinki (urban) HR-AMS Vavihill SE Cabauw NL Melpitz DE Payerne CH Q-AMS/NH3 Jungfraujoch Mace Head IR Puy de Dome FR Ispra IT San Pietro Capof. Q-AMS/HR-AMS Finokalia GR K-Puszta HU Barcelona (urban) ES Montseny AMS: NR PM1 – NH4+, SO42-, NO3-, Cl-, Org Mass IC: water soluble components in PM2.5 or PM10: NH4+, NO3-, SO42-, Cl-, (Na+, K+, Mg2+, Ca2+, Mg2+) + gas-phase NH3, HNO3, HCl, SO2

3 Thermal Vaporization & Electron Impact Ionization
The Aerodyne Aerosol Mass Spectrometer (AMS) Non-refractory components to PM1 Particle Beam Particle Aerodynamic Sizing Generation Composition Thermal Vaporization & Electron Impact Ionization The particles enter the AMS and are focused by an aerodynamic lens into a tight beam (<1 mm diameter). In the size range nm we get 100% of the particles transmitted from the inlet to the detector. The chopper wheel defines the beginning of a time-of-flight period. Smaller particles move faster, so when a packet travels from chopper to detector, the smallest ones arrive first. The detector consists of a 600 degree C oven that flash vaporizes the particles. The oven is located inside the ionizer region of a quadrupole mass spectrometer. Most of the gas phase molecules are lost in the first chamber of the AMS, so what reaches the ionizer is almost exclusively material that was in the particle phase. Can use single ion monitoring mode to get quantitative information about single particles, or scan the quadrupole to get complete MS of average particles. Jayne et al., Aerosol Science Technology 33:1-2(49-70), 2000.

4 What does the AMS measure?
Inlet 100% transmission 60 – 600 nm close to PM1 Detected species: Non-refractory (flash-volatilise at 600ºC) Good for NH4NO3, (NH4)2SO4, NH4Cl Information on how neutralised the aerosol is Organic mass (rather than organic carbon), C/H/O ratios at some sites Time-series of organic components (HOA, OOA, BOA) Size distributions

5 What do the IC systems measure?
MARGA, GRAEGOR, denuder-SJAC, PILS Used in campaigns, but increasing long-term datasets: Auchencorth, Harwell, Melpitz, Cabauw Various inlets used: PM1, PM2.5, PM10, TSP close to PM1 Total soluble gases / aerosol Comparable to filter extraction, but good NH4NO3 measurement Some potential interferences: Potential positive interference on HONO (under high NOx & SO2) Potential interferences for NH3/NH4+ from amines? Others?

6 Aerosol Components & AMS

7 Interpretation of AMS Data
AMS Component Model Component NH4+ NO3- NH4NO3-NO3- (aNO3) SO42- NSS-SO42- Cl- NH4Cl-Cl- (tail of NaCl?) Org PM1 Organic Mass (H/C/O/N) HOA (Hydrocarbon-like …) POA from combustion sources OOA (Oxygenated …) SOA BOA (Biomass burning …) BOA H/C/O ratios IC PM10 NO3- - AMS-NO3- Coarse NO3- IC PM10 SO42- - AMS-SO42- SS-SO42-

8 Data on EBAS http://ebas.nilu.no/ Aerosol Mass Spectrometer
Instrument: AMS Matrix: pm1_nonref MARGA, GRAEGOR, denuder/SJAC Instrument: online_IC Matrixes: air, pm10, pm25, pm10_pm25

9 Campaign Averages: Absolute composition of NR-PM1
(* Data not yet available)

10 April/May 2008 – Common Relative Scale

11 Sep/Oct 2008 – Common Scale

12 Feb/Mar 2009 – Common Scale

13 Data Availability AMS Data Other Data for EUCAARI/EMEP sites
Ratified AMS bulk time-series data on EBAS (end of June) Access to full database requires signing of EUCAARI Data Agreement Involve measurement community in interpretation of model results! Suggest that compiled database will also be available from me Organic factor time series (HOA, OOA, BOA) available end of 2010 Other Data for EUCAARI/EMEP sites Meteorological EC/BC Aerosol size-distributions (SMPS) PM2.5/PM10 Gas-phase (e.g. MARGA) - status? Include data from other networks? e.g. Dutch NH3 network …

14 Real-Time Sites AMS: NR PM1 – NH4+, SO42-, NO3-, Cl-, Org Mass
June ‘06 Jan/Feb ’07 April/May ‘08 Sep/Oct ‘08 Feb/Mar ’09 Auchencorth/Bush UK Q-AMS/IC IC Harwell/Chilbolton HR-AMS/IC Hyytiala FI C-AMS C-AMS/NH3 Puijo Q-AMS Helsinki (urban) HR-AMS Vavihill SE Cabauw NL Melpitz DE Payerne CH Q-AMS/NH3 Jungfraujoch Mace Head IR Puy de Dome FR Ispra IT San Pietro Q-AMS/HR-AMS Finokalia GR K-Puszta HU Barcelona (urban) ES Montseny AMS: NR PM1 – NH4+, SO42-, NO3-, Cl-, Org Mass IC: water soluble components in PM2.5 or PM10: NH4+, NO3-, SO42-, Cl-, (Na+, K+, Mg2+, Ca2+, Mg2+) + gas-phase NH3, HNO3, HCl, SO2

15 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 Energy Centre of the Netherlands (ECN): Rene Otjes JRC Ispra: Jean-Philippe Putaud

16 Campaign Averages: Relative Composition of NR-PM1
Larger chloride contribution in 3rd campaign – solid fuel burning or partitioning? (* Data not yet available)


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