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Jean-Philippe Putaud European Commission, Joint Research Centre, Institute for Environment and Sustainability. http://ccu.ei.jrc.it/ccu/ accessed from the web about 2000 times. Aim at fulfilling users’ needs Aerosols and Health:
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Jean-Philippe Putaud European Commission, Joint Research Centre, Institute for Environment and Sustainability http://ccu.ei.jrc.it/ccu/ accessed from the web about 2000 times EMEP Workshop, 20 Apr. 2004
Aim at fulfilling users’ needs Aerosols and Health: Which physical or chemical PM characteristic is responsible for health effects? Aerosols and Climate: It is expected that negotiations beyond the Kyoto Protocol will have to consider also the role of aerosols. Aerosol Modeling Models need testing and validation against fundamental data such as aerosol particle size distributions and chemical compositions. EMEP Workshop, 20 Apr. 2004
Compilation of data-sets including: • PM chemical composition OR particle number size distribution • + independent measurement of PM mass concentration Beyond the current EMEP monitoring program Data collected mainly from other scientific projects EMEP Workshop, 20 Apr. 2004
full year data set seasonal data set 34 sites naturalruralnear-cityurban kerbside EMEP Workshop, 20 Apr. 2004
PM10 (µg/m³) PM2.5 (µg/m³) What have we learned from 24 h-integrated measurements (1) naturalruralnear-cityurban kerbside EMEP Workshop, 20 Apr. 2004
PM2.5 / PM10 ratio What have we learned from 24 h-integrated measurements (2) naturalruralnear-cityurbankerbside PM2.5/PM10 ratio increases with PM10 except at kerbside sites EMEP Workshop, 20 Apr. 2004
PM10 composition What have we learned from 24 h-integrated measurements (3) naturalruralnear-cityurbankerbside EMEP Workshop, 20 Apr. 2004
PM10 PM2.5 natural and rural background kerbside near-city and urban background EMEP Workshop, 20 Apr. 2004
Ispra, Italy, 2000 µgC/m³ µgC/m³ artifact / particulate OC ratio How well do these data represent what is actually in the air(1)Organic Matter • Possible sampling artifacts • OC / EC determination • Organic Carbon Organic Matter conversion EMEP Workshop, 20 Apr. 2004
How well do these data represent what is actually in the air(2)(NH4)NO3 Milano,Italy 1998 NO3- from pre-fired Pallflex Quartz (µg/m³) NO3- from HNO3 corrected Whatman 41 (µg/m³) EMEP Workshop, 20 Apr. 2004
How well do these data represent what is actually in the air(3)water Ispra, Italy, 2000 EMEP Workshop, 20 Apr. 2004
EC /TC How well do these data represent what is actually in the air(4) Elemental Carbon EMEP Workshop, 20 Apr. 2004
What have we learned from continuous measurements of number size distribution EMEP Workshop, 20 Apr. 2004
Natural Rural Near-city Urban Kerbside EMEP Workshop, 20 Apr. 2004
naturalruralnear-cityurbankerbside What suite of measurements are needed ? EMEP Workshop, 20 Apr. 2004
Concluding comments • The over-determination of the PM mass concentration is a useful tool to check for data consistency at a single site, but • The lack of harmonisation in sampling and analytical techniques makes comparisons between sites difficult. • However, a set of observations are quite robust, such as: • 1. regional background significantly affects PM at urban sites • 2. diurnal variations in number (and volume) concentrations, • 3. predominance of carbonaceous species at most sites, specially in the smallest size fractions EMEP Workshop, 20 Apr. 2004
annual average (Zhang et al, 2002) Beijing 2000 Changsu A world wide aerosol phenomenology ? PM2.5 µg/m³ naturalrural near-cityurban kerbside EMEP Workshop, 20 Apr. 2004 (18) EMEP Workshop, 20 Apr. 2004
http://rea.ei.jrc.it/netshare/wilson/WDCA/ julian.wilson@jrc.it EMEP Workshop, 20 Apr. 2004 (19) EMEP Workshop, 20 Apr. 2004
Research projects AEROCE ACE’s COSAM AEROCOM CREATE ACCENT compilations WMO/GAW network IMPROVE network IMPROVE network CAPMON network PFR network EMEP network PMOD WRRC IMPROVE Data Centre EMEP CCC NatChem Data Centre WMO/GAW World Data Centre for Aerosols EMEP Workshop, 20 Apr. 2004
Finn Palmgren Xavier Querol Sergio Rodriguez Gerald Spindler Harry ten Brink Peter Tunved Rita Van Dingenen Birgit Wehner Ernest Weingartner Alfred Wiedensohler Peter Wåhlin and Frank Raes Urs Baltensperger Erika Brüggemann Stefano Decesari M.-Cristina Facchini Sandro Fuzzi Robert Gehrig Hans-C. Hansson Roy M. Harrison Alan M. Jones Paolo Laj Willy Maenhaut Nikolaos Mihalopoulos Konrad Müller MANY THANKS to EMEP Workshop, 20 Apr. 2004