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The 4th GAW Expert Workshop on Volatile Organic Compounds

11-12 th September 2012, York, United Kingdom
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10th September 2012


[Tour of York / NCAS VOC laboratories available]

Transport provided from / to Hotel


19:00 -

Meal in York







11th September 2012



(presentations are available by cklicking on the name)


09:00 – 9:15

Welcome and arrangements

Alastair Lewis  / OksanaTarasova/ Stuart Penkett (Chair of the Reactive gases SAG)



SESSION 1 Observations

Chair:  Oksana Tarasova



9:15 – 9:35

New Insights from the NOAA-INSTAAR Global NMHC Monitoring Network

Detlev Helmig

University of Colorado, USA

9:35 – 9:55

AGAGE Measurements of Non-Methane HydroCarbons (NMHCs)

Martin K. Vollmer (given by Stefan Reimann)

EMPA, Switzerland

9:55 – 10:15

Long-term online C2-C11 VOC Measurements in a Subtropical Area close to the Gulf of Mexico

Bernahard Rappenglück

University of Houston, USA

10:15 – 10:35

Volatile organic compound observations at the Cape Verde Atmospheric Observatory between 2006-2012

Lucy Carpenter

University of York, UK

10:35 – 11:05

Coffee Break



SESSION 2 Observations 2

Chair: Detlev Helmig



11:05 – 11:25

Developments in background VOC monitoring at CSIRO Marine and Atmospheric Research

Ian Galbally (remotely)

CSIRO, Australia

11:25 – 11:45

First results from the new high resolution air sampler (HIRES) installed aboard the CARIBIC aircraft

Angela Baker

MPI Mainz, Germany

SESSION 3 Observations and analysis




11:45 -12:05

The influence of boreal forest fires on the global distribution of non-methane hydrocarbons

Alastair Lewis


12:05 – 12:20

ACTRIS-GAW: ACTRIS a common European infrastructure for VOC measurements

Stefan Reimann

EMPA, Switzerland

12:20 – 12:35

ACTRIS-GAW: Uncertainty Evaluation in VOC Analysis - Draft VOC Measurement Guidelines

Christian Plass-Duelmer

DWD, Germany

12:35 – 14:00




SESSION 3 Observations and analysis (cont)

Chair: Bernhard Rappenglück



14:00 – 14:15

ACTRIS-GAW: post-analysis quality checks applied to VOC data within ACTRIS before submission to the EBAS database

Stefan Reimann

EMPA, Switzerland

14:15 – 14:30

ACTRIS-GAW: Recommendations and Requirements in VOC Analysis Proposed in the Draft ACTRIS Measurement Guideline

Christian Plass-Duelmer

DWD, Germany

14:30 – 15:15

Discussions on:

  • GAW VOCs priority list;
  • recommended measurement techniques for different environments/challenges;
  •   network extension;
  •   database

Alastair Lewis

Christian Plass-Duelmer

Stuart Penkett


15:15 – 15:45

Coffee Break



SESSION 4 Quality assurance

Chair: Oksana Tarasova



15:45 – 16:05

Overview on GAW VOC network measurement comparability

Rainer Steinbrecher

KIT, Germany

16:05 – 16:25

First results of a Pan-European round-robin exercise within ACTRIS

Stefan Reimann

EMPA, Switzerland

16:25 - 16:45

ACTRIS-GAW: OVOC GC concepts and intercomparison

J. Englert

DWD, Germany

16:45 - 17:30

Discussion on the recommended total uncertainty of the VOC measurements (network specification, contributions to RRR process)

Rainer Steinbrecher

Oksana Tarasova

KIT, Germany WMO


Group depart hotel on foot for Barley Hall, via York Minster



19:30 – 22:00

Dinner – Barley Hall


agenda the 4th VOC expert meeting


12th September 2012

SESSION 5 VOC standards

Chair: Jerry Rhoderick



09:00 – 09:20

Update on the CCL for VOCs by the CCQM-GAWG

Martin Milton


09:20 – 09:40

Progress on standards for NMHC, terpenes and oxy-VOC

Marivon Corbel


09:40 – 10:00

Evaluation of cylinder treatments for the preparation of stable oxy-VOC standards

A. Baldan

VSL, Netherlands

10:00 – 10:20

Stability Assessment of Gas Mixtures Containing Monoterpenes in Varying Cylinder Materials and Treatments

Jerry Rhoderick


10:20 – 10:40

Progress towards an international comparison of formaldehyde in nitrogen standards: stability studies and purity analysis of potential transfer standards

J. Viallon

BIPM, France

10:45 – 11:15

Coffee Break



SESSION 5 VOC standards (cont)

Chair: Rainer Steinbrecher



11:15 – 11:35

Development of dimethylsulfide, acetonitrile, and formaldehyde gas standards


Gwi Suk Heo

KRISS, Korea

11:35 – 12:05

Discussion on the availability and appropriateness of existing standards and future needs.


Led by: Martin Milton

Discussion on the availability and appropriateness of existing standards and future needs.


12:05 – 13:00

Summary of discussions for written report

Led by: Stuart Penkett

Summary of discussions for written report














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