Lunar Calibration Workshop Wrap up, next steps and list of actions X. Scott Hu (CMA) S. Wagner (EUMETSAT) T. Stone (USGS) X. Fred Wu, F. Yu (NOAA)

Wrap up Great level of interest = at least 22 agencies or institutes represented  well over 50 people on site + 6 remote attendees over 4 days At the first workshop, the focus was given to the GIRO and the preparation of the data This time, we addressed many more aspects: Measurements campaigns from ground with a large variety of instruments, Traceability, New satellites datasets, Lunar data preparation Evolution of the ROLO/GIRO/GLOD and new developments in the field of lunar models for calibration purposes, Inter-calibration but also inter-band calibration, Post-launch instrument characterization such as MTF estimation, cross-talk or ghost And some other alternative uses of lunar data in the microwave range.

Wrap up A lot of interactions and discussions Some questions were addressed at the first workshop and were again discussed here, such as the estimation of the oversampling factor estimation The GIRO and GLOD licence agreement has been discussed and hopefully clarified. Further effort is required: Data from the ground-based campaigns need to be further processed and analysed Pursue the efforts on running such campaigns The traceability of the GIRO to the ROLO needs to be finalized Calculation of the observables for the GIRO and proper uncertainty assessments Pursuing the efforts on inter-calibration / inter-band calibration Pursuing the efforts on exploring further the use of lunar images from instruments in space. More capabilities (not only on the radiometry) will reinforce further the need for instruments in space to look at the Moon, even when manoeuvers are involved

Achievements to date A first iteration of the benchmark to establish the traceability of the GIRO to the ROLO is ready Lunar calibration gathers many instrument and calibration experts to share experience and knowledge to move the Lunar Calibration Community forward New activities (MTF) are taking place and can reinforce the links established between GSICS and CEOS WGCV IVOS

What’s next? Next obvious iteration = GSICS annual meeting Minutes / summary of the workshop to be communicated to CEOS-IVOS + people who showed interest Is there an interest for another workshop? If yes, when and where?

Many thanks to CMA and to XIOPM in particular to: Peng Zhang, Xiuping Hu, Lin Chen Wei Hao, Shuang Wang And to all the people who helped organizing this workshop and welcomed us in Xi’an Many thanks to the chairs Many thanks to the participants