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A WMO/GAW Expert Workshop on Global Long-Term Measurements of NOxy

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Thursday, 8 October 2009

09:00

Welcome

Welcome and Introduction

Introductory note WMO-GAW

Wolfgang Fricke

Christian Plass-Dülmer

Liisa Jalkanen

09:10

Purpose of Meeting and Background to NOxy Measurements in the Troposphere

Stuart Penkett

09:30
Short presentations from programs and stations     Chair: L. Jalkanen
09:35

NOxy measurements: instrumentation depending on concentration level and time resolution

Tom Ryerson
09:50

Ground-based in-situ observations of oxides of nitrogen: experience from the Swiss National Air pollution Monitoring Network

Martin Steinbacher
10:00

The Pic du Midi station: instrumentation, results and planned NOxy measurements

Francois Gheusi
10:10
NOxy Measurements at Cape Verde Observatory James Lee
10:20
Coffee  
10:35
Short presentations (cont.) Chair: L. Jalkanen
10:35
NOx measurements in the Antarctic Neil Brough
10:45
Measurements of NOxy at the Cape Grim Station Ian Galbally
10:55

Methods for long term NOxy measurements at CARE (Egbert) station

Jan Bottenheim
11:05
NOxy at Hohenpeißenberg Stefan Gilge
11:15
Special aspects Chair: O. Tarasova
11:20

NOxy measurements in China: surprising results concerning the present theory of photochemistry

Franz Rohrer
11:35
Interesting results of START and ARCTAS Frank Flocke
11:50

High sensitivity airborne NO2 at 10 Hertz: advances in solid-state UV sources

Tom Ryerson
12:00
The Cabauw Intercomparison campaign of Nitrogen Dioxide measuring Instruments A. Pieters/U. Friess
12:10
NO2 profiles with MAXDOAS Udo Friess
12:25
Satellite Remote Sensing of NO2 Steffen Beirle
12:35

Lunch

 
13:45

till 15:30

A General Discussion to approve/decide on Agenda, structure of Report and responsibilities

Chair: C. Plass-Duelmer
  GAW- Structure, Groups and Central Facilities Oksana Tarasova
  Social program – visit “Neuschwanstein” and Dinner  
     

Friday, October 9

09:00
Nature of the GAW NOxy Network, rationale, locations and species

Chair: Stuart Penkett

Rapporteur: Ian Galbally

09:05
Status of NOxy measurements in EMEP and possible links / joint activities with GAW Kjetil Tørseth
09:20

DISCUSSION

Rationale, Networks, Stations, species, DQO, ground-based in situ, airborne, remote including a contribution by M. Schultz (MACC) on data needed for models

 
10:15
Coffee  
10:30
Instrumentation and SOPs

Chair: Stefan Gilge

Rapporteur: Tom Ryerson

10:35
Possible structure of SOP’s, results of Intercomparisons   as introduction to the discussion

Stefan Gilge

10:50

DISCUSSION

Instruments and SOP’s ;

NO2 conversion: PLC, BLC, Mo ;

NOy: Au/Mo converter ;

Comparison: CLD – NaI (EMEP)                               

Passive sampling of NO2 ;

Uncertainties / artefacts

Objective of this session:

Recommendation for GAW concerning defined measurement methods, propose and agree on SOP’s, contribution to meeting report

12:00
Lunch  
13:00

Quality Assurance and WCC (part 1)

(part 2)

Chair: Franz Rohrer

Rapporteur: M. Steinbacher

13:35

DISCUSSION

QA-SAC with contribution by H. Gerwig, QA-SAC Germany

Round robins

Intercomparison at WCC

Audit with reference instrument

MONEY? ; WHAT is feasible?

Objective of this session:

propose and agree on WCC, evaluation of QA/QC procedures, contribution to meeting report

14:15
CCL and primary standards

Chair: Martin Milton

Rapporteur: Oksana Tarasova

14:20
The role of NMIs through the CCQM-GAWG in the CCL for VOCs

Martin Milton

14:35

Gas standards and comparisons for NO2, NO and HNO3 covered by BIPM-CCQM-GAWG

Robert Wielgosz

14:50
Comparability of standards for ambient NOx and dynamic methods

Martin Milton

15:05

DISCUSSION

Standards compatible with DQO’s

Availability and costs

Round robin test gases

Objective of this session:

propose and agree on primary standards and CCL, contribution to meeting report.

15:30

Contributions to Meeting Report and Its Structure        Outlook

 
16:30
End of Meeting followed by Guided tour through the Observatory for interested participants  
     

 

 

 

 
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