GSICS Research Working Group Web Meeting 2010-06-22 11:00-13:00 UTC Reference Instruments and their Traceability

Draft Agenda 10min Tim Hewison (Chair) Agree Agenda Any Other Business Jack Xiong (NASA) Design and Performance of MODIS calibration Ruediger Lang (EUMETSAT) Potential of GOME-2 as a inter-calibration reference Fred Wu (NIST) Traceability concepts - General TBD (NIST) Dave Walker (NIST) Traceability of microwave measurements 20min Dave Young (NASA) An introduction to the CLARREO solar band spectrometer 0min TBD Report on Comparison of AIRS and IASI - postponed until next web meeting All Discussion

The Perfect Reference “Always turns up on time.” “Makes a lovely cup of tea.”

The Perfect Reference Good on-board Calibration Stable! Full Spectral Characterisation Known Field of View Hyperspectral instruments can synthesis any SRF SI Traceability in orbit Long Operating Life In stable non-synchronous orbit To allow good range of collocations with GEO and sun-sync LEO

Discussion Are we ready to adopt a reference standard for solar channels? What do we need to do to establish traceability? Volunteer to review AIRS-IASI And report at next web meeting on 2010-07-27 What do we need to do to prepare for CLARREO? What do we need to do to prepare for microwave? How can we change references in future? Topic for next web meeting – Product Consistency