Methods and procedures for data. Aerosol measurement program

Transcription

1 Global Atmosphere Watch Research Enabling Services Methods and procedures for data quality control in the GAW/WMO Aerosol measurement program Paolo Laj CNRS U. Grenoble Alpes / U. Helsinki WMO GAW SAG Aerosol Chair 1 2

2 Anthropogenic Forcing on Climate IPCC 2013 the largest uncertainty to estimates and interpretations of the Earth s changing energy budget 2.83 [2.26 to 3.40] W m 2 (high to very high confidence) Low regional variability 0.9 [ 1.9 to 0.1] W m 2 (medium to low confidence) High regional variability 2 2

3 Deadly Particles.in the World 3 2

4 Aerosol Components acting on RF and Health Emission Sources Natural Primary Secondary Anthropogenic Intrinsic Optical Properties Scattering Fine Coarse Absorbing 4 D Variability Near surface Short lived Upper atmosphere Relatively Long lived 4 2

5 List of variables with established GAW SOPs AQ C

6 GAW network for aerosol variables Data access through WDCA A large and increasing community of users Need to ensure very high quality of data and high degree of standardization A agreed protocols and traceability procedures A need for skilled

7 Standard Operating Procedures Scientific Expert Committee User Requirements (RRR) SOP Recommendation Approval by SAG Aerosol WCC Peer review Recommended procedures for Aerosol measurements Inlet to data provision approach WIS compatible GAW IP general procedures Network Implementation in (WCC) CEN / ISO

8 World Calibration Centers Aerosol World Calibration Center for Aerosol Physics World Optical Depth Research and Calibration Center Capacity building Calibration and intercomparison workshops Reference instruments Audits and site visits Twinning Partnership Advice in setting up aerosol programs (SOP)

9 QA/QC loop in GAW Aerosol WCC GAW TEC Training Technical/D ata Mgt Observation platform NRT WCC go/n ogo WDCA Specific use (Copernicus) No On site audits Instrument performance lab check Yes Quality Assessment OK USERS

10 Increasing provision of GAW Aerosol data Number of stations providing aerosol parameters record >10 years Number of stations providing aerosol parameters to WDCA Number of Instruments checked by WCCAP >150 Essential contribution from EU commission funding to:

11 NRT Data provision Number of stations providing aerosol parameters in NRT to WDCA Essential contribution from EU commission funding to:

12 Increasing use of GAW Aerosol data Where Are the WDCA Users Located? Number of Unique Users (IPs) by Country (2015) Number of IP access to WDCA/month >2000 Associated publications Essential contribution from EU commission funding to:

13 QA/QC in Contributing Networks to GAW Contributing networks are part of GAW strategy Should apply an established quality control protocol and provide a statement on the quality of its datasets. Evaluation of measurement quality is performed in association with the relevant World Calibration Center (WCC) High GAW Quality standards may not apply Compliance with GAW data policy

14 Work with Metrology Institutes towards iso standards Established collaboration with BIPM and associated NMIs CEN/TC 264/WG 32 Air quality Determination of the particle number concentration CEN/TC 264/WG 35 EC/OC in PM Reference Standard for Black Carbon Work towards BC definition (Petzold et al., 2013) METAS, NPL, TROPOS, FMI, PSI for the definition of a BC standard CEN/TC 264/ WG35 follow up: evaluation of equivalence between filter based and on line lightabsorption measurements

15 Future Issues regarding QA in GAW Maintain Observing Platforms in operation (incl. skills of station operators) Towards new Aerosol Calibration Centers Lidar CC, On line Aerosol Chemistry CC Missing Aerosol chemistry CC Need for Regional Calibration Centers Promote establishment of Regional Networks outside Europe and N. America Discussion with NPL India Regional training activities Promote work with National Metrology Institutes QA/QC policy with Contributing networks and Citizen observatories