Report to the 23 rd General Conference on Weights and Measures CONSULTATIVE COMMITTEE ON PHOTOMETRY AND RADIOMETRY

THE COMMITTEE – JUNE 2007

MEMBERS COUNTRYNMICOUNTRYNMICOUNTRYNMI AustraliaNMIAJapanNMIJSouth AfricaNMISA CanadaNRCKoreaKRISSSpainIFA-CSIC ChinaNIMMexicoCENAMSwitzerlandMETAS FinlandMIKESNetherlandsNMi VSLTurkeyUME FranceLNE-INMNew ZealandMSLUKNPL GermanyPTBRussiaVNIIOFIUSANIST HungaryMKEHSlovakiaSMU ItalyINRIMSingaporeSPRING OBSERVERS International Commission on Illumination (CIE) World Meteorological Organization (WMO)

MEMBERS PER REGION

MAIN FOCUS Processing and evaluation of key comparison data Completion of the first edition of the CCPR- specific guidelines for key comparisons Consolidation and extension of the service categories for the CMC database Evaluation of CMC submissions by the CMC working group Formation of a working group on strategic planning Winding up the work of the UV working group Review of the progress in the member laboratories.

HIGHLIGHTS Added new Appendix on the treatment of photobiological quantities (Appendix 3) in the new edition of the SI brochure. Signing of a formal working arrangement between the CIPM and the International Commission on Illumination (CIE) in April Appendix 2 of the SI brochure dealing with the practical realization of the definition of the candela was updated. Recommendation on global importance of SI traceable measurements to monitor climate change formulated.

WORKING GROUPS WORKING GROUP SUBJECTCHAIR WG-CMCCalibration and measurement capabilities EURAMET WG-KCKey comparisonsUSA WG-SPStrategic planningCanada

CMC ENTRIES

CMC ENTRIES - CONTINUED

Light (Photometry)

Colour (Colorimetry)

Optical radiation (Radiometry)

Optical radiation (Fibre optics)

KEY COMPARISONS K1 Spectral irradiance K2 Spectral responsivity K3 Luminous intensity and luminous responsivity K4 Luminous flux K5 Spectral diffuse reflectance K6 Spectral regular transmittance

PARTICIPATION CRITERIA I CCPR membership. Independent scale realization. CMC coverage of the quantity over the whole wavelength range at the time of the call for participants.

Maximum number of participants: Group 1: EUROMET+COOMET 6 Group 2: APMP+SADCMET4 Group 3: SIM2 PARTICIPATION CRITERIA II

TERMS OF REFERENCE: WG-SP Establish and maintain a strategic planning document for the CCPR in line with the CIPM guidance document for CCs, Advise the CCPR on the optimal operational structure Draft and maintain admission criteria for membership of CCPR and its working groups. Monitor developments with respect to the future of the SI system.

FUTURE POSSIBILITIES Utilization of single-photon sources and detectors Entangled photon metrology Single-photon radiometry with photon quantum-state characterization Quantum candela in terms of photon number

On the importance of SI traceable measurements to monitor climate change Draft Resolution K The 23rd General Conference, recalling Resolution 4 of the 21st General Conference on Weights and Measures (1999) concerning the need to use SI units in studies of earth resources, the environment, human well-being and related issues, considering the expansion in the number of international and national initiatives to address the challenges and implications of climate change for the world, working arrangements between the CIPM and the World Meteorological Organization (WMO), the increasing importance of optical radiation measurements and physico- chemical measurements of air, ground-based as well as air-borne, and physico- chemical measurements of ocean water, which support research into the understanding of the causes and impacts of climate change, the importance of basing long-term measurements which relate to climate change on the stable references of the International System of Units (SI),

On the importance of SI traceable measurements to monitor climate change (continued) welcomes the proposed BIPM/WMO international conference to address the increasing important role of metrology in studies on global climate change, recommends relevant bodies to take steps to ensure that all measurements used to make observations which may be used for climate studies are made fully traceable to SI units, and further recommends appropriate funding bodies to support the development of techniques which can make possible a set of SI-traceable radiometric standards and instruments to allow such traceability to be established in terrestrial and space based measurements.

THANK YOU FOR YOUR ATTENTION! MERCI POUR VOTRE ATTENTION!