Topics and Chairing next Web Meetings Tim Hewison Special Issue of the IEEE TGRS on “Inter-Calibration of Satellite Instruments”: Special Issue of the IEEE TGRS on “Inter-Calibration of Satellite Instruments”: 23 February 2019 Topics and Chairing next Web Meetings Tim Hewison

Web Meetings noted in Minutes Manik commented on the possibility to have technical discussion through web meeting instead of discussions at the annual meeting. This will be further discussed on Friday (format of the meeting). GWG.2017.3a.2: GCC to organise a web meeting before the User’s workshop. GIR.2017.7f.2: Fred to explore the feasibility of retrieving SRFs using the method initiated by Manik and report back at later stage (web meeting?) Action: GVNIR.2017.8ha.1: EUM(Seb) to arrange web meeting in April to finalise date and venue for lunar calibration workshop. GDWG.2017.5g.2: GDWG co-chairs to attend MW sub-group web meeting. 2 Web meetings: Implementation of DCC mode method and writing journal paper by early 2018. GDWG: GitHub – June 2017 GDWG Progress meeting – late October 2017

Previously drafted Web meetings Date Group Topics 2018-03 GRWG/GDWG Annual GRWG+GDWG Meeting   2017-?? GRWG+GDWG - GCC GRWG/GDWG web meeting on User Requirements (maybe not needed?) GCC GSICS Working Groups' Actions Tracking Tool Requirements and Discussion (maybe not needed?) GRWG Planning 2018 Workshop on SI-traceable Hyperspectral Reference instruments GRWG UV Subgroup Ultraviolet Sub-Group web meeting GRWG/GDWG web meeting on instrument performance monitoring 2017-10 GDWG - P. Miu Progress meeting on GDWG activities GRWG VIS/NIR - VIS/NIR+UV - D.Doelling Publications on DCC algorithm and results 2017-06 GDWG - M.Takahashi Use of GitHub for GDWG activities 2017-05 GRWG IR Subgroup IR Reference Traceability Report - Review progress - including draft error budgets

Other Web Meetings needed?

Date and Place of Next WG Meetings Tim Hewison Special Issue of the IEEE TGRS on “Inter-Calibration of Satellite Instruments”: Special Issue of the IEEE TGRS on “Inter-Calibration of Satellite Instruments”: 23 February 2019 Date and Place of Next WG Meetings Tim Hewison

2018 GRWG/GDWG Meeting Where? When? Alignment with proposed workshop of SI-Traceable hyperspectral reference satellite instruments?