Lunar Calibration Workshop Activities X Hu CMA T

Lunar Calibration Workshop Activities X. Hu (CMA), T. Stone (USGS), X. Wu (NOAA), S. Wagner (EUMETSAT) With the support of B. Fougnie (CNES) T. Hewison (EUMETSAT) 1 Go to ‚View‘ menu and click on ‚Slide Master‘ to update this footer. Include DM reference, version number and date

Main topics Four main sessions: • Measurements and Moon observations (Scott Hu - CMA) • Using the ROLO/GIRO (Tom Stone - USGS) • Inter-calibration using the Moon (Sebastien Wagner - EUMETSAT) • Alternative methods and applications (Fred Wu - NOAA) 2 Go to ‚View‘ menu and click on ‚Slide Master‘ to update this footer. Include DM reference, version number and date

Measurements and Moon observations • Focus = measurement/observation campaigns + outcome of those campaigns, with the purpose of improving the lunar calibration reference • CMA to present the current status of its data analysis from the 2015 -2016 activities. • Plans that CMA may have for future activities. • Use of CIMEL instruments for Moon irradiance measurement (uncertainties in the lunar calibration reference + possibility to use those data for refinement of the reference) • Establish a comprehensive catalogue / description / evaluation of existing data may also lead to recommendations of which critical information is missing and how to acquire it. • General discussion. 3 Go to ‚View‘ menu and click on ‚Slide Master‘ to update this footer. Include DM reference, version number and date

Measurements and Moon observations • Plans for inviting scientists from NIST, Chinese institutes, ESA • Hyperspectral observation from space: • SCIAMACHY • GOME-2 • HYPERION ? • Contact JAXA for ground-based measurements • Template/questionnaire will be provided to data owners to provide information about the datasets ⇒ provided by end of April for review ⇒ distribution by end of May (? ) 4 Go to ‚View‘ menu and click on ‚Slide Master‘ to update this footer. Include DM reference, version number and date

Practical application of the GIRO/ROLO model • Accuracy of irradiance measurements from lunar images • Each user to discuss : 1. oversampling: evaluation method and uncertainty 2. dark level: evaluation method and uncertainty 3. selection of Moon pixels 4. sensor sensitivity to polarization 5. inter-band comparisons Template will be provided to participant (same timescale than the dataset template) • New developments of the GIRO/ROLO model • increasing the spectral resolution • to accommodate spectrometer instruments • tied to the solar spectrum, and its line structure • requires a reference solar spectrum (presentation 8 r) 5 Go to ‚View‘ menu and click on ‚Slide Master‘ to update this footer. Include DM reference, version number and date

Practical application of the GIRO/ROLO model • New developments of the GIRO/ROLO model (cont. ) • new specification of the lunar reflectance spectrum • to account for different reflectance characteristics of light and dark areas on the Moon — tied to the librations • potential to use SCIAMACHY data to develop an empirical add-on • recent efforts on correction to ROLO • e. g. CNES, using PLEIADES data for phase correction • Update on benchmarking tool/dataset (presentation 8 i) • users of the benchmark to present on results • dependent on having the benchmark available 6 Go to ‚View‘ menu and click on ‚Slide Master‘ to update this footer. Include DM reference, version number and date

Inter-calibration • Algorithm presented by EUMETSAT could be implemented and tested against VIIRS see presentation at the 2017 GSICS annual meeting: http: //gsics. atmos. umd. edu/bin/view/Development/20170 320 (presentation 8 f) • Alternative approaches? • Participants to report… • Inter-band calibration? TBC which session… 7 Go to ‚View‘ menu and click on ‚Slide Master‘ to update this footer. Include DM reference, version number and date

Alternative methods and applications • Radiometric calibration using lunar radiance • Quantification of Modulation Transfer Function (MTF) using lunar image • Detection of ghosting and crosstalk. • Radiometric calibration in IR and MW spectrum. • Inter-channel calibration. • Proba-V (Stephan Adriaensen / Marc Bouvet) • Correction of VIIRS DNB SRF (Jack Xiong) • Use of IR hyperspectral measurements (IASI – CNES? ) Call for contribution will be made 8 Go to ‚View‘ menu and click on ‚Slide Master‘ to update this footer. Include DM reference, version number and date

Conclusions • Clearly, format for 2 nd workshop different from 1 st workshop • Attempt to have common practical work in preparation of the workshop to limit as much as possible the mini-conf format. 9 Go to ‚View‘ menu and click on ‚Slide Master‘ to update this footer. Include DM reference, version number and date