1. TFMM 2016 Trend Report Main Findings
17th TFMM annual meeting – Utrecht (The Netherlands)

2. TFMM Trend Assessment Process Methodology Nov 2014: May 2015:
Methodology workshop Paris
May 2015:
Overview TFMM Meeting Krakow
Sep 2015:
Outline by chapter (writing teams)
Dec 2015:
First complete draft for comments to TFMM
Mar 2016:
Revised pre-final draft sent to EMEP&WGE Extended Bureaux
May 2016:
Final version presented to TFMM
Publication by CCC/NILU as joint TFMM/CCC/MSC- E/MSC-W Report
Methodology
Selection of measurement sites and consolidation of the database (available on TFMM wiki)
Consensus statistical methodology
Eurodelta-Trends modelling exercise

3. Ozone 1990-2012: 10% reduction in the amplitude of peaks
20% reduction in the number of 50ppb exceedances
30% and 37% reduction of SOMO35 and AOT40
Different evolution in the 1990s and 2000s
The trend depends on the metrics, less downward trends for the metrics influenced by the background

4. Sulfur and nitrogen compounds and particulate matter
Ox. S
Ox. N
60 to 90% reduction for Sulphur compounds over 20yrs
30 to 40% reduction for Nitrogen compounds over 20yrs
30% reductions of PM (10&2.5) for the 2000’s
Red N. PM

5. Heavy Metals and POPs 60 to 80% reductions for Pb, Cd, HCB
30% for Hg & BaP

6. Way forward Publish the report as joint report: TFMM & Centres
Possibility to submit peer reviewed articles
Dissemination
Showcase the importance of long term high-quality measurement
Demonstrate the efficiency of mitigation measures, and the need to maintain efforts
Support modelling analyses (Eurodelta-Trends)