surface-ozone INTRO

BIPM Virtual Workshop on Accurate Monitoring of Surface Ozone

5-9 October 2020 (online)

 

Implementing a Globally Coordinated Change in Ozone Cross-Section Value
for Surface Ozone Monitoring

 

surface-ozone SC

Workshop Executive Secretary

J. Viallon

BIPM


Steering Committee

P. Brewer

NPL

R.I. Wielgosz

BIPM

S. Lee

KRISS

I. Chubchenko

VNIIM

J. Carney

NIST

J.T. Hodges

NIST

J. Norris

NIST

K. Saarnio

FMI

N. Ntsasa

NMISA

A. Borowiak

JRC

surface-ozone DETAILS

Objectives

The reference method for ground-level ozone measurements is based on UV photometry, with replicates of the NIST Standard Reference Photometer (SRP) acting as primary standards for numerous national and international ozone-monitoring networks. Measurements of ozone amount fractions in ambient air are thus ultimately anchored to the value of the ozone absorption cross-section at the wavelength 253.65 nm. A consensus value with the smallest uncertainty ever achieved was published in 2019.

Global coordination is now required to implement the 2019 value, which will increase the measured atmospheric ozone concentrations. The workshop aimed to gather representatives of reference laboratories, monitoring networks, legislators, and ozone analyser manufacturers to develop a plan and timetable for the adoption of the 2019 value.

 

Schedule

The virtual workshop included five on-line sessions from Monday 5 to Friday 9 October 2020, each session starting at 12:00 (UTC+2):

  • Monday: Surface ozone measurement and its impact / Survey feedback
  • Tuesday: International standards, calibration services and monitoring networks
  • Wednesday: Air quality normative aspects; ozone analyser manufacturing
  • Thursday: Break out session for Task Groups
  • Friday: Feedback from Task Groups, conclusions and recommendations

 

CCQM-GAWG Statement

Following stakeholder consultation during the Workshop, the CCQM Gas Analysis Working Group is issuing a statement on its intention to change the Ozone Cross-Section Value used for Surface Ozone Standards and Measurement.

Publications

Workshop documents

Statement

CCQM-OZONE-WS/2020-Statement

Intention to change the Ozone Cross-Section Value for Surface Ozone Measurement

CCQM-GAWG

Agenda

Presentations

CCQM-OZONE-WS/2020-1.0

Welcome, introduction and workshop aims

P. Brewer

CCQM-OZONE-WS/2020-1.1

Impact of surface ozone on human health and the environmental

M. Wichmann−Fiebig

CCQM-OZONE-WS/2020-1.2

The 2019 Ozone Cross-Section consensus value at 253.65 nm

J.T. Hodges

CCQM-OZONE-WS/2020-1.3

Benefits to uniformity of atmospheric ozone measurements

Owen Cooper

CCQM-OZONE-WS/2020-1.4

Impact of the ozone cross−section on air quality compliance

A.C. Lewis

CCQM-OZONE-WS/2020-1.5

Results of the on-line survey

J. Viallon

CCQM-OZONE-WS/2020-2.1

Primary Surface Ozone Standard Reference Photometers and BIPM.QM-K1

J. Viallon

CCQM-OZONE-WS/2020-2.2

Calibration services for ozone standards and instruments Within United States of America

J. Norris

CCQM-OZONE-WS/2020-2.3

Calibration services for ozone standards and instruments Within Switzerland

B. Niederhauser

CCQM-OZONE-WS/2020-2.4

Past ozone cross−sections transitions in Total Ozone measurements

D. Tarasick

CCQM-OZONE-WS/2020-2.5

Asia Network of surface ozone monitoring

H. Tanimoto

CCQM-OZONE-WS/2020-2.6

Californian air monitoring network

L. Sorensen

CCQM-OZONE-WS/2020-2.7

Aquila and European Air quality Reference Laboratories

A. Borowiak

CCQM-OZONE-WS/2020-3.1

Ozone cross-section change, the CEN perspective

B. Stacey

CCQM-OZONE-WS/2020-3.2

Ozone traceability, surface monitoring impacts, and potential implementation issues in the United States

J. Rice

CCQM-OZONE-WS/2020-3.4

Impact on national ozone monitoring network by the new ozone absorption cross-section value in Korea

J-H Park

CCQM-OZONE-WS/2020-3.5

National surface-level ozone analyzers in Russia

V.P. Chelibanov

CCQM-OZONE-WS/2020-5.1

TG1 Report: Identifying and implementing change

Task Group 1

CCQM-OZONE-WS/2020-5.2

TG2 Report: Time line for Change

Task Group 2

CCQM-OZONE-WS/2020-5.3

TG3 Report: Communicating Change

Task Group 3

CCQM-OZONE-WS/2020-5.4

TG4 Report: Managing Change

Task Group 4