Tropospheric Ozone Changes 11-13 April 2011 at CIC Météo-France in Toulouse

Tropospheric Ozone Changes
         11-13 April 2011 at CIC Météo-France in Toulouse

Monday 11 April :

10h00-13h00 : Registration and Lunch at Meteo France conference center

13h00-13h45 : Welcome
V. Thouret: Organization and objectives
J. Logan: Summary of Boulder workshop
O. Tarasova : Ozone measurements in the Global Atmosphere Watch Programme

13h45-15h00 : Session 1 – Data analysis in the UT/LS, global analysis
10+3' : V. Thouret (MOZAIC UTLS midlatitudes);
10+3' : J. Staehelin (MOZAIC/GASP: Long-term ozone changes in UT/LS in the northern
        hemisphere);
10+3' : M. Prather (Searching for the cause of the North-South asymmetry in tropopause
        ozone)
10+3' : P. Hess (The impact of the stratosphere on tropospheric ozone trends: 1990-2009)
10+3' : M. Lin (Variability and trends in springtime tropospheric ozone from 1981-2007:
  Exploring the roles of stratosphere-troposphere exchange and North American emissions)

10 minutes for discussion

15h00 – 16h00 : Coffee break and posters on UTLS, Asia, SH and tropics, methods (10)

16h00- 18h30 : Session 2 – Data analysis over Asia
15+5' : A. Ding (Aircraft Measurement of Air Pollutants in China: Results from the
        MOZAIC program and the 2007 Northern China study)
12+3' : H. Tanimoto given by J. Logan (Decadal trends in lower-tropospheric ozone over Japan
        during 1998- 2008: Records at multiple sites and comparison to regional model
        simulations)
10+3' : J. Logan (Sondes over Asia: Japan and Hong Kong)
10+3' : R. Zbinden (Tropospheric ozone trends over JAPAN from 1995-2008 : a MOZAIC and
        WOUDC ozonesondes comparison);
10+3' : T. Wang (Surface ozone concentrations at a non-urban coastal site (Hok Tsui, Hong
        Kong) in southern China, 1994–2010)
10+3' : X. Xu (The trend and variability of surface ozone at the global GAW station Mt.
        Waliguan,China)
10+3' : P. Cristofanelli (Surface ozone measurements at the Nepal Climate Observatory –
        Pyramid (PYR), global GAW-WMO station (Nepal, 5079 m a.s.l.) )
10+3' : M. Y. Arshinov (long-term monitoring of the ozone vertical distribution in the Siberian
        troposphere)

30 minutes for discussions and summary

18h30 – 19h30 : Cocktail and posters (all sessions)

Tuesday 12 April :

08h30 – 10h30 : Session 3 – Data analysis over SH and Tropics:
12+3' : I. Galbally (Long Term Trends in Ozone in the Southern Ocean Marine Boundary Layer
        and in the Southern Hemisphere Free Troposphere)
10+3' : E. Brunke by H.E. Scheel (Analysis of ozone trends at the Cape Point GAW station,
        South Africa (34 °S))
10+3' : J.P. Cammas (MOZAIC UT Tropics over Africa);
10+3' : J. Ziemke by J. Rodriguez (A long-term satellite data set on tropospheric ozone column:
        status, availability, and future plans)
10+3' : H. Morioka by Irina P. (Interannual variations of ozone in the tropical troposphere and
        tropopause region from the SHADOZ and other ozonesonde data sets);
10+3' : F. Posny (Ozone-sonde measurements at Reunion Island : tropospheric ozone trends
        from 1992 to 2011.);
10+3' : A.C. Nahas or A. Ilahi (Surface Ozone Measured at Tropical Marine-Background Bukit
        Kototabang, Indonesia);
10+3' : S. Luppo (Surface ozone measurements at Ushuaia GAW Station.)

15 minutes for discussion and summary

10h30 – 11h00 : coffee break

11h00 – 13h00 : Session 4 – Updates of analyses over North America and Europe
15+5' : J. Logan (Long-term changes in ozone over Europe – comparison of ozone
        measurements from sondes, regular aircraft (MOZAIC) and alpine surface sites, and
        implications for trends)
12+3' : K. Law (Northern Hemisphere ozone trends: results from TF-HTAP)
12+3' : D. Tarasick (Changes in the vertical distribution of ozone over Canada from
        ozonesondes: 1980-2010)
10+3' :R. Kivi (Trends in tropospheric ozone over northern high-latitude ozonesonde stations)
10+3' :G. Ancellet (Analysis of a 25-yr ozone profile data set recorded at Observatoire de
        Haute Provence (OHP), Southern France);
10+3' :R. Derwent (Trends and annual variability in intercontinental baseline flows of ozone
        into north west Europe observed at Mace Head, Ireland 1989–2009)
10+3' :R. Wilson (Have primary emissions reduction measures reduced ozone across Europe?
        Analysis of European Ozone Trends 1996-2005)
10+3' :M. Vana (Long – term trends of surface ozone in the Czech Republic)

13h00 – 14h00 : Lunch

14h00 – 15h00 : Poster session: North America / Europe, and model studies (13)

15h00 – 16h00 : Session 4 continued: 2 talks by
12+3' :S. Gilge (Trend of near surface ozone at Hohenpeissenberg Meteorological Observatory
       in comparison to the other GAW-DACH-sites Sonnblick, Jungfraujoch and Zugspitze);
12+3' :B. Galleithner (Tropospheric ozone trends at Central European sounding stations and
        mountain sites)
30 minutes for discussion and summary

16h00 – 16h30 : Coffee break
16h30 – 18h00 : Session 5 – Discussion session: State-of-the-art and future needs
Deliverables from this workshop

Wednesday 13 April :

08h30 - 10h30 : Session 6 – Evaluation of long-term model runs
12+3' :L. Pozzoli by F. Dentener (Reanalysis of tropospheric sulphate aerosol and ozone for
       the period 1980-2005 using ECHAM5-HAMMOZ)
12+3' :K. Sudo (Interannual trend and variability in global tropospheric ozone during 1970-
        2009 simulated in the CHASER model)
12+3' :A. Strunk (Influence of meteorology and increasing anthropogenic emissions on the
        vertical distribution of tropospheric O 3 near the Asian continent for the period 2000-
        2008)
12+3' :P. Zanis (Regional climate - air quality simulations with RegCM3/CAMx over Europe
        for the period 1990-2001: Validation of simulated near surface ozone with observations
        from the EMEP network)
12+3' :M. Schultz (Detecting tropospheric ozone trends in long-term (global) model
        simulations)
12+3' :C. Granier (Evolution of the distribution of tropospheric ozone and its precursors during
        the 1997-2008 period)
12+3' : L. Oman by A. Douglass (New Insights in Tropospheric Ozone and its Variability)

15 minutes for discussion and summary

10h30 – 11h00 : coffee break

11h00 – 13h00 : Session 7 – Common methodologies and standard data sets
Discussion on the following topics (list can be extended if desired):
- Can we all agree on common time periods for the assessment of past trends?
- Can we agree on a common data format (including sampling frequency)?
- Are there universal methods for filtering time series (background, wind sectors, …)?
- Is there a need to define a subset of measurements for model evaluation?
- Is there a common, robust method to evaluate models with ozone data?
- How can we use the data to identify poorly represented processes in models?

The discussion may be preceeded by one or two seed presentations:

12+3' : M. Saunois (Effect of sampling frequency on ozone trends: Lessons from MOZAIC.);
12+3' : A. Lefohn (Methodology and Results for Identifying Changes in Surface Ozone Levels
        in the US for 1980-2009 and 1995-2009)

13h00 – 14h00 : Lunch

14h00 – 15h30 : Joint session with ACCMIP
2:00-2:30: D. Shindell/J.-F. Lamarque: Overview of ACC-MIP
2:30-3:00: M. Schultz: Summary of Tropospheric Ozone Workshop and Model evaluation
3:00-3:30: I. Bey/C. Granier/F. Dentener: 1980-2010 hindcast

15h30 – 16h00 : Coffee break

16h00 – 18h00 : Session 7 : Wrap up, summary
What have we learned?
Future activities: formal intercomparison, next workshop(s), organisation of a review article
framework of future workshops (endorsement by international programme, etc.)

POSTERS (29) :

UTLS, Asia, SH and tropics (7):
B.D. Belan (Long-term variability of surface ozone concentration near Tomsk and its
         prediction for the solar activity cycle 24)
F. Ebojie (Tropospheric ozone climatology derived from SCIAMACHY limb-nadir matching
         observations.)
S. Oltmans (Long-term tropospheric ozone variations at background measurement sites.);
D. Plummer (seasonal cycle around the tropopause)
K. Shibata (Simulation of tropospheric ozone in the past, present and future with a chemistry
         climate model of Meteorological Research Institute)
V. Thouret (MOZAIC over India and Caracas)
C. Zellweger (Surface Ozone Variability and Trends at the Global GAW Stations Assekrem
         (Algeria), Bukit Koto Tabang (Indonesia) and Mt. Kenya (Kenya))
Methods (2):
S. Fuzzi (ACCENT-Plus: linking science and policy needs in atmospheric composition
         change)
C. Zellweger (Summing-up audit results of the World Calibration Centre for Surface Ozone
         (WCC-Empa) obtained during the past 15 years)
North America / Europe and model studies (20) :
K. Boersma (Significant trends in tropospheric nitrogen oxide concentrations observed over
        Europe from the Ozone Monitoring Instrument)
G. Clain (European surface trends in ozone, 1990-2007, a modelling study)
P. Cristofanelli (Analysis of O3, CO and BC variability at the Mt. Cimone GAW-WMO
         regional station (Italy, 2165 m a.s.l.) by using FLEXPART analyses)
A. Delcloo (Trends in ozone concentrations for the long term ozonesonde observation record
        in the troposphere and the stratosphere for Uccle)
S. Eckhardt (The impact of North American emissions on carbon monoxide and ozone
         concentrations over Europe)
Z. Fleming (Untangling the influence of air mass origin on ozone and ozone precursor
        measurements at the Weybourne and Cape Verde Atmospheric Observatories)
F. Gheusi (Ozone trends at remote surface stations in France from the PAES network)
S. Henne (European trends of surface O3 and Ox evaluated with Generalised Additive Models)
Irina P. (An Analysis of Tropospheric Ozone over Boulder, CO)
E. Katragou (Regional climate-air quality simulations for the reference decade 1991-2000:
         Impact of meteorological forcing on surface ozone over Europe.)
A. Ladstaetter-Weissemayer (First Steps in the validation of Tropospheric Ozone Limb-Nadir-
         Matching with SCIAMACHY)
H.E. Scheel (Analysis of ozone trends at the mountain sites Zugspitze and Wank (47 °N)
I. Senik (The peculiarities of inter-annual variability of surface ozone at Kislovodsk High
         Mountain Station (43.73oN, 42.66oE, 2070 m a.s.l., Northern Caucasus ))
J. Staufer (Comparison of ozone measurements of MOZAIC with ozonesondes based on
         backward trajectory analysis)
D. Tarasick (Tropospheric Ozone Maps from the Trajectory Mapping of Global Ozonesonde
         Data)
S. Tilmes (Ozonesonde climatology for Model Evaluation of the Troposphere and Lower
         Stratosphere)
V. Thouret (MOZAIC over Frankfurt and Vienna)
V. Thouret (MOZAIC over NewYork and Dallas)
A. Voulgarakis (Interannual variability of tropospheric ozone and its precursors: exploring
         biomass burning emissions as a potential driver)
R. Zbinden (Tropospheric ozone trends deduced from MOZAIC time-series (1995-1998) with

fully defined individual tropospheric columns over Eastern USA, GERMANY,
JAPAN);