Report to the 23rd
General Conference on Weights and Measures
CONSULTATIVE COMMITTEE ON PHOTOMETRY AND RADIOMETRY
MEMBERSCOUNTRY NMI COUNTRY NMI COUNTRY NMI
Australia NMIA Japan NMIJ South Africa NMISA
Canada NRC Korea KRISS Spain IFA-CSIC
China NIM Mexico CENAM Switzerland METAS
Finland MIKES Netherlands NMi VSL Turkey UME
France LNE-INM New Zealand MSL UK NPL
Germany PTB Russia VNIIOFI USA NIST
Hungary MKEH Slovakia SMU
Italy INRIM Singapore SPRING
OBSERVERSInternational Commission on Illumination (CIE)World Meteorological Organization (WMO)
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 2007.
• 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
SUBJECT CHAIR
WG-CMC Calibration and measurement capabilities
EURAMET
WG-KC Key comparisons USA
WG-SP Strategic planning Canada
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+SADCMET 4• Group 3: SIM 2
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 KThe 23rd General Conference,
recalling Resolution 4 of the 21st General Conference on Weights andMeasures (1999) concerning the need to use SI units in studies of earthresources, 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 theincreasing important role of metrology in studies on global climate change,
recommends relevant bodies to take steps to ensure that all measurementsused to make observations which may be used for climate studies are madefully traceable to SI units,
and further recommends appropriate funding bodies to support thedevelopment of techniques which can make possible a set of SI-traceableradiometric standards and instruments to allow such traceability to beestablished in terrestrial and space based measurements.
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