Special Issue of the IEEE TGRS on Inter-Calibration

Special Issue of the IEEE TGRS on Inter-Calibration of Satellite Instruments: GRWG Report and Briefing Tim Hewison on behalf of Dohyeong Kim Overview GRWG Chairing Deliverables Update Strategy Challenges References & Traceability Expansion Consistency User Engagement Case Studies GRWG Actions Review 2/4/20 Slide: 2 GRWG Chairing GSICS Research Working Group Chair: Dohyeong Kim Vice-Chair: Tim Hewison Vice-Chair: Scott Hu UV Sub-Group Chair: Rose Munro 2/4/20 Slide: 3 VIS/NIR Sub-Group Chair: Dave Doelling IR Sub-Group Chair: Tim Hewison Microwave SubGroup Chair: Ralph

Ferraro Definition of GSICS Deliverables 2/4/20 Slide: 4 Products corrections Intercalib. Algorithms Calibration datasets Calibration references Software and hardware tools Monitoring assessment reports Standards, conventions, GSICS Products for users of satellite data, including calibration corrections/coefficients GSICS Algorithms, which describe intercalibration processes, (described by ATBD) GSICS Monitoring Reports, assessments GSICS Reference datasets, including Solar spectrum, GSICS Tools for use by inter-calibration developers, (GIRO, SBAF, ) GSICS recommended standards, conventions and guidelines, GSICS User Services, information Routine Generation of GSICS Products Decision: GSICS should aim to provide users with the most recent available calibration data at the highest available update frequency, allow users to decide how to apply it for their applications. For example: Considering calibration changes driven by long-term drift: Users interested in long-term trends may want to apply frequent updates to the calibration corrections (expected to be smaller) to avoid large, artificial jumps in the calibration time series, Users interested in near real-time applications may want to apply the updates less frequently (e.g. only when it exceeds a certain threshold) to avoid additional calibration noise. 2/4/20

Slide: 5 Challenges - References Multiple References Merging or Single Handling Transitions Traceability CLARREO/TRUTHS The Moon The Sun 10:35 Manik Bali 11:05 Tim Hewison NOAA GRWG Selecting GSICS References: IR and MW 3e Primary GSICS or Key Comparison References? 3f 17:05 Denis Jouglet (Remote) 17:25 Likun Wang CNES Hyperspectral IR comparisons - including TANSO-FTS/2 IR Reference Sensor Traceability and Uncertainty 16:30 Discussion All (+XX?) 18:05 Tim Hewison/Tobin 9:00 Aisheng Wu 9:20 Jack Xiong 10:30 Tom Stone 10:50 Arata Okuyama 11:10 Sebastien Wagner 11:30 Discussion 11:50 Fred Wu/Fangfang Yu 11:50 Fred Wu/Fangfang Yu 16:50 Larry Flynn 2/4/20 Slide: 6 NOAA 3p

3q Discussion: Migration of reference instrument EUMETSAT CLARREO preparations 4s NASA NASA 4a 4b MODIS calibration summary presentation VIIRS calibration summary presentation 3s USGS ROLO developments & schedule JMA Application of GIRO to NIR bands EUMETSAT Status of GIRO policy, infrastructure & inter-cal study All Way forward on lunar inter-calibration NOAA Lunar surface target selections & auto-mapping 4d 4e 4f NOAA Lunar surface target selections & auto-mapping 4h UVSG Reference Solar Irradiance Spectra 4t 4g 4h Challenges - Expansion New Instruments New Channels (GEO NIR) Sounders Hyperspectral

High-Resolution New Sub-Groups Coordinate with CEOS 2/4/20 Slide: 7 10:50 Arata Okuyama JMA Application of GIRO to NIR bands 4e 17:05 Denis Jouglet (Remote) CNES Hyperspectral IR comparisons - including TANSO-FTS/2 3p 13:20 Seongick Cho 13:40 Hiroshi Murakami 14:00 Yukio Kurihara 14:20 Hiroshi Murakami 14:40 Kei Shiomi KIOST JAXA JAXA JAXA JAXA Operation and Calibration of GOCI Himawari-8 Ocean Color and Aerosol Himawari-8 SST Calibration activities of GCOM-C/SGLI Calibration activities of GOSAT & GOSAT-2 1j 1k 1l 1m 1n 15:30 Takeo Tadono 15:50 Takeshi Motooka 16:10 Takeshi Masaki 16:30 Marehito Kasahara 16:50 Ralph Ferraro 17:10 Shengli Wu

(Remote) 17:30 Takashi Maeda JAXA JAXA JAXA JAXA NOAA CMA Calibration activities of ALOS/AVNIR2 PRISM Calibration activities of ALOS-2/PALSAR Calibration activities of TRMM & GPM Radars Calibration activities of GCOM-W/AMSR2 Intercalibration on ATMS and SAPHIR Intercalibration on the FY3/MWRI 1o 1p 1q 1r 1s 1t JAXA Intercalibration of AMSR2 and PMWs 1u GRWG Coordination GSICS Exec Panel GSICS Coordination Center UV Sub-Group CEOS ACC 2/4/20 Slide: 8 WGCV ACSG GSICS Research Working Group VIS/NIR Sub-Group WGCV IVOS

GSICS Data Working Group IR Sub-Group Microwave Sub-Group WGCV MWSG GPM X-CAL Challenges - Consistency Between Algorithms Merging Results DCC/lunar Spectral Formats Focus on Users 2/4/20 Slide: 9 15:50 Bertrand Fougnie CNES Combining Methods 4q 17:10 Discussion All (+BF+FY) Discussion: Next method - Rayleigh v Raymatching 4u Linking the GEO ring Comparing GEO-LEO and GEOGEO Differences To Validate Uncertainty estimates Ensure consistency Generate global L2 products Ensure consistency 2/4/20

Slide: 10 GSICS Web Meetings 2015/16 Date Group 2016-01-06 GRWG - MW Subgroup 2015-12-03 GRWG+GDWG R.Roebeling 2015-11-03 GRWG VIS/NIR 2015-10GRWG UVSG 08/09 2015-09-16 GRWG - MWSG 2015-09-08 GRWG - T.Hewison 2015-07-09 GRWG - IR Sub-Group 2015-05-13 GRWG-MWSG 2015-04-23 GRWG/GDWG 2/4/20 Slide: 11 Topics Update on MW calibrations and standards, preparation for GR WG+GDWG Annual Meeting Instrument Information Landing Pages for OSCAR DCC - Plotting Tool Requirements, GPPA Review, Latest Ray-mat ching results Joint Meeting of GRWG UV and WGCV Atmospheric Compositio n Sub-Groups Update on micorwave sensor calibrations and plans for 2015 GS ICS Users Workshop Best Practice for Process of defining SBAF and uncertainties Formation of Infrared Sub-Group of GRWG - and Reference Inst ruments' Requirements Microwave Sub-Group Web Meeting Review of Actions from 2015 Annual GRWG+GDWG Meeting GSICS Web Meetings 2015/16 Date Group Topics 2016 2016 GRWG - VIS/NIR GRWG VIS/NIR S.Wagner GRWG - T.Hewison Joint web meeting with IVOS, ACSG on use of SBAF tool Lunar Inter-Calibration Double-difference between MODIS/VIIRS and GIRO Scoping inter-calibration opportunities using NWP bias monitoring statistics Identify potential topics for web meetings

Will review list on Friday morning 2/4/20 Slide: 12 Actions on GRWG Chair Closed during 2015/16 Action Ref Assigned to Due Date State GWG_13.13 Description GRWG Chair to set up web meeting to define Best Practice for Process of defining SBAF and uncertainties by 1 June 2013. TimHewison 01 Jun 2013 Closed Web meeting GRWG_15.8 Tim to put Pradeep in touch with 3G activity to assess uncertainties in RAOB-Sat TimHewison 29 Feb 2016 Closed by email 201507-02. TimHewison 29 Feb 2016 Closed by email 201602-22 29 Feb 2016 - Completed at Users Workshop 29 Feb 2016 Completed by email Feb

2016: in User Guide by EUMETSAT. GDWG chair will add clarifications to explain case of bug fixes. GRWG_15.11 GRWG_15.29 GRWG_15.64 2/4/20 Slide: 13 EUMETSAT to circulate report on investigation of the impact of the GSICS correction on atmospheric motion vector winds and other products. Tim Hewison to propose the approach of issuing frequent GSICS corrections to the Exec Panel and Users Workshop. Tim to cooperate with the GDWG to develop a version control document. TimHewison TimHewison Other GRWG Actions Closed during 2015/16 Action Ref Description GRWG_15.7 Fred to follow up on the availability of information on Metop/AVHRR FredWu? instruments, for which NOAA is responsible- 29 Feb 2016 GRWG_15.10 KMA to clarify during the discussion on lunar data policy the position KMA of KMA wrt to their data 29 Feb 2016 closed 29 Feb 2016

Emailed Tony McNall y2016-01-11, - see 3a GRWG_15.48 2/4/20 Slide: 14 Tim to ask ECMWF for double differencing of geostationary ring. Assigned to TimHewison Due Date State closed by email to 11 May 2015: We can process Metop-B AVHRR data now. Thanks for all the relevant Metop-B nominal AVHRR information see link Actions on GRWG Chair Still Open Transfer? Action Ref GRWG_14.15 GRWG_14.38 Description GRWG Chair to investigate the possibility to form a sub-group to develop inter-calibration products based on double difference comparisons with model data (NWP/RAOB+RTM). Tim Hewison to provide a one-page summary GEO/LEO IR products for QA4EO? best practices showcase. Assigned to Due Date State TimHewison

01 May 2015 CLOSE? Tim, Hewison 01 May 2015 Late GRWG_15.2 GRWG Chair to add a meeting on NWP in the agenda of the next GSICS web meetings in 2015/2016 TimHewison 29 Feb 2016 Now due - Transfer to GRWG Chair GRWG_15.56 GRWG Chair to coordinate review by all GPRCs of requirements for inter-calibration references for GEO-LEO IR products. TimHewison 29 Feb 2016 Now due (3e) 31 Oct 2015 Late - Transfer to GRWG Chair GRWG to review the calibration issues in the EP_GRWG_16.08 draft input to the WMO Vision of WIGOS space-based observing syst TimHewison em in 2040 and report to the EP. The GRWG Chair (or EP Chair ?) to invite the CEOS WGCV to work on a joint statement on procedures, best practices and calibration EP_GRWG_16.09 resources required to ensure consistency of data records through TimHewison accurate and homogeneous calibration, as an input to the Architecture for Climate Monitoring from Space. All satellite operators to evaluate their requirements for GSICS resources, products and services to serve the needs of their internal users (for NRT products or climate applications such as SCOPE-CM EP_GRWG_16.10 projects): identify application areas, draft requirement indicating the TimHewison

characteristics of the product needed, quality criteria and delivery mode 2/4/20 Slide: 15 31 Jul 2015 Late - Transfer to GRWG Chair 31 Jan 2016 Late - Transfer to GRWG Chair Actions on GRWG Chair Still Open Transfer? Action Ref GSICS_15.1 G.2 A43.16 Description GSICS to work with CEOS/WGCV to: Describe the processes to be followed to ensure consistent calibration meeting climate requirements Describe the required infrastructure (space-based and surfacebased) supporting these processes Review the analysis of calibration-related tasks in the logical analysis of the Architecture (with a view to provide a joint input to the Architecture for Climate Monitoring from Space) and report to CGMS-44 GSICS_15.2 WGII/3 A43.03 GSICS to document and implement its approach to manage changes in reference instruments GSICS_15.3 WGII/3 A43.01 GSICS to establish the requirements for absolute lunar calibration and prepare a white paper describing the tentative way to meet those requirements in case they go beyond those lunar calibration capabilities. 2/4/20 Slide: 16 Assigned to Due Date

State TimHewison, 29 Feb 2016 KenHolmlund? Now due - Transfer to GRWG Chair TimHewison Now due - Transfer to GRWG Chair TimHewison 29 Feb 2016 29 Feb 2016 Now due - Transfer to VIS/NIR SubGroup Chair Other GRWG Outstanding Actions 2/4/20 Slide: 17 Review items in Bold Others just as a reminder Quick review 10s per page! So pay attention look for your agency/name If you spot one and have an update stop me! Other GRWG Actions Still Open Action Ref GRWG_14.1 GRWG_14.4 GRWG_14.7 GRWG_14.8 GRWG_14.9 GRWG_14.14 GRWG_14.16 2/4/20 Slide: 18 Description

Bruce Wielicki (NASA) to investigate availability of lunar observation data from CLARREO demonstrator test flight and share these with CNES and USGS and notify CNES of future balloon flights so Pleiades observations can be synchronised. Bertrand Fougnie to provide smoothed DCC BRDFs derived from PARASOL observations. Fangfang Yu to propose what the variables should be in the NetCDF? file to provide information on the calibration diurnal v ariation, and report to GRWG. - Reassigned to ManikBali? in May 2014. CMA and JMA to present their analysis on GEO-GEO IR products at the next meeting. CMA to present plans for developing inter-calibration products for GEO hyperspectral IR sounder. XingMing? Liang to report the requirement from GSICS to support MICROS. CMA to provide ATBD for FY-3C IR product. Assigned to Due Date State BruceWielicki? 01 May 2015 Late BertrandFoug nie? 01 May 2015 Late ManikBali 01 May 2015 Late Scott,Masaya 01 May 2015 Late Scott 01 May 2015 Late XingMingLiang 01 May 2015

Late CMA Late 01 May 2015 Other GRWG Actions Still Open Action Ref GRWG_14.20 GRWG_14.27 GRWG_14.28 GRWG_14.29 GRWG_14.31 GRWG_14.32 GRWG_15.45 GRWG_14.33 GRWG_14.35 GRWG_14.39 2/4/20 Slide: 19 Description KMA to send products to the EUMETSAT GSICS Data and Products server until the CMA collaboration server is available. All GPRCs to review their GSICS websites to take into account of the new developments in GSICS as these websites will be reviewed in the next joint meeting. IMD to update their website to provide GSICS information. This will be provided on the WMO for inclusion into their website Masaya Takahashi to check for a document regarding minimum content for GPRC GSICS webpage. If this document does not exist, then he shall author one and upload it to the Wiki. EUMETSAT to prepare a proposal for automating the GPPA and demonstrate this in a Webex meeting. Xu Na (CMA): report at the next meeting on the work done on SRF retrieval using hyperspectral instruments. CMA to report back on their investigations on SRF retrieval. EUMETSAT to share with IMD plans for reprocessing of the archive data (re-calibration) EUMETSAT/NOAA/NASA/JMA to perform analysis to evaluate the optimal temporal resolution for a DCC product. GPRCs are invited to report at the next web-meeting on the DCC method. CMA to investigate hosting a joint GSICS/CEOS-IVOS workshop to promote SI traceable measurements in orbit. Assigned to Due Date State KMA

01 May 2015 Late ALL, GPRC 01 May 2015 Late IMD 01 May 2015 Late MasayaTakaha 01 May 2015 shi Late EUMETSAT 01 May 2015 Late XuNa? 01 May 2015 Late CMA 29 Feb 2016 Late EUMETSAT 01 May 2015 Late EUMETSAT, NOAA, NASA, JMA 01 May 2015 CMA 01 May 2015

Late Late Other GRWG Actions Still Open Action Ref GRWG_14.41 GRWG_15.5 GRWG_15.21 GRWG_15.3 GRWG_15.4 GRWG_15.9 GRWG_15.12 GRWG_15.13 GRWG_15.14 GRWG_15.15 2/4/20 Slide: 20 Description KMA to investigate the feasibility of providing GSICS with its BRDF model and report. KMA to present the use BJ Sohn's DCC algorithm to build a BRDF model KMA to deliver their RTM DCC BRDF model. IMD to report on results of investigation into suitability of Rann of Kutch as a test site for INSAT-3D calibration, following ground characterisation, and share details with GSICS by email D. Jouglet to investigate the availability of POLO in SADE database and report to GSICS. JAXA to correspond with Microwave Sub-Group to consider whether GSICS products could/should be generated for active instruments such as DPR. NOAA to report on plans to incorporate GOES-R/ABI in ICVS. Assigned to Due Date State KMA 01 May 2015 Late KMA 29 Feb 2016 Due now KMA

29 Feb 2016 Due now IMD 29 Feb 2016 Due now CNES 29 Feb 2016 Due now JAXA 29 Feb 2016 Due now FredWu? 29 Feb 2016 Due now NOAA to provide their GEO-LEO IR algorithm code to IMD. FredWu? 29 Feb 201 Dave to investigate the use of MIIC to generate DCC data for nearDaveDoelling? 29 Feb 2016 real-time processing of DCC using VIIRS. Dave to investigate potential to transfer this technology to other data DaveDoelling? 29 Feb 2016 centres. Due now Due now Due now Other GRWG Actions Still Open Action Ref GRWG_15.17 GRWG_15.18 GRWG_15.19 GRWG_15.20 GRWG_15.22 GRWG_15.24 GRWG_15.25 GRWG_15.26 GRWG_15.27 GRWG_15.33 2/4/20

Slide: 21 Description Rob to propose new terminology, based on the term "homogenised" or "MODIS (or whatever)-equivalent. EUMETSAT to circulate Rob's review of FCDR inter-calibration requirements to GRWG/GDWG, identifying which type of intercalibration product could meet each of these. A. K. Sharma to interact with GDWG to provide INSAT-3D SRFs. EUMETSAT to interact with KNMI to see if they could process the SCIAMACHY data to have the SBAFs for the last two bands (beyond 1900nm). NASA is ready to provide the code. Jack Xiong (NASA) to deliver the MODIS spectral response to the GSICS wiki Fred to implement Sebastien's deseasonalisation method and compare with Fangfang's and report back NASA to consider providing centralised processing of MODIS DCC data Sebastien Wagner (EUMETSAT) to present at a further web meeting on DCC the extracted time series for the NIR16 channel. Lin Chen and Sebastien Wagner to circulate statistics of mode/mean/ median for review by email. Dave Doelling to ask Constantine Lukashin to participate in meeting on lunar inter-calibration accounting for spectral differences. Assigned to Due Date State RobRobelling? 29 Feb 2016 Due now TimHewison 29 Feb 2016 Due now AKSharma 29 Feb 2016 Due now TimHewison 29 Feb 2016 Due now JackXiong? 29 Feb 2016

Due now FredWu? 29 Feb 2016 Due now NASA 29 Feb 2016 Due now SebastienWag 29 Feb 2016 ner SebastienWag 29 Feb 2016 ner DaveDoelling? 29 Feb 2016 Due now Due now Due now Other GRWG Actions Still Open Action Ref GRWG_15.34 GRWG_15.35 GRWG_15.36 GRWG_15.37 GRWG_15.38 GRWG_15.39 GRWG_15.42 GRWG_15.43 GRWG_15.44 2/4/20 Slide: 22 Description Dave Doelling to check availability of lunar observations in the Hyperion dataset by 1 April 2015. Jack Xiong and Dave Doelling to report plans to investigate the double difference between MODIS and VIIRS lunar observations in preparation to transfer the calibration reference and at web meeting. Dave Doelling to investigate whether CLARREO could fund dedicated observation campaigns to tie lunar irradiance models to an absolute SI-traceable scale. Sebastien Wagner to circulate survey on participation in the planned activities to develop lunar inter-calibration to members of lunar calibration community. Sebastien Wagner to organize a web meeting to report on the progress made on inter-calibration using the Moon (between

October and December 2015). NOAA to update the product user guide for GOES-IASI products to inform about the range of diurnal applicability KMA to investigate the possibility to extract the data before the MBCC is applied, and in collaboration with NOAA to assess the impact of MBCC on the data. KMA to report back at the next GSICS annual meeting. ISRO to explore NOAA MBCC more into detail and to apply it. ISRO to report back at the next GSICS annual meeting. ISRO to report back on their investigations on SRF retrieval. Assigned to Due Date State DaveDoelling? 29 Feb 2016 Late JackXiong? 29 Feb 2016 Due now DaveDoelling? 29 Feb 2016 Due now SebastienWag 29 Feb 2016 ner Due now SebastienWag 29 Feb 2016 ner Due now FredWu? 29 Feb 2016 Due now KMA 29 Feb 2016 Due now ISRO

29 Feb 2016 Due now ISRO 29 Feb 2016 Due now Other GRWG Actions Still Open Action Ref GRWG_15.47 GRWG_15.49 GRWG_15.50 GRWG_15.51 GRWG_15.52 GRWG_15.53 GRWG_15.54 GRWG_15.55 GRWG_15.57 GRWG_15.58 2/4/20 Slide: 23 Description JMA to investigate and provide a report on the uncertainty analysis to support progress to Pre-Operational mode. IMD/ISRO to contact the IMD NWP and NCMRWF about double differencing of geostationary ring. Tim to conduct a survey to identify a date among GPRC so that they produce the GSICS corrections for that date and provide them to Dave. - Reported on 20160302 Dave to report on the analysis of GEO-GEO double-differences. Tim to provide SBAF tool to support the analysis of GEO-GEO doubledifferences NASA-MODIS (Jack) to consider investigating alternative regression algorithms in radiance instead of Tb and report at next GRWG annual meeting CMA to report on generalising regression in GEO-LEO IR products to include polynomial terms and report by next GRWG meeting NOAA to investigate inter-channel calibration with IASI. Denis Jouglet to review capabilities of IASI and AIRS and CrIS? to meet the requirements for inter-calibration references for GEO-LEO IR products. Fred to invite Pagano and Yong Han to join this review as relevant instrument experts Assigned to Due Date State

MasayaTakaha 29 Feb 2016 shi IMD, ISRO 29 Feb 2016 Due now TimHewison 29 Feb 2016 Due now DaveDoelling? 29 Feb 2016 Due now TimHewison 29 Feb 2016 Due now JackXiong? 29 Feb 2016 Due now Scott 29 Feb 2016 Due now FredWu? 29 Feb 2016 Due now CNES 29 Feb 2016 FredWu? 29 Feb 2016 Due now Due now Due now Other GRWG Actions Still Open

Action Ref GRWG_15.59 GRWG_15.60 GRWG_15.61 GRWG_15.62 GRWG_15.63 2/4/20 Slide: 24 Description Dave to investigate how to share the existing data set for MODIS 0.6m band (2002-end of 2009) with the GRWG. Larry Flynn (NOAA) to consider mechanisms to provide delayed CrIS? data for FY-2 inter-calibration Rob to propose the maximum frequency on the update requirement for non-routine events Manik to interact with Jrme to push forward the development of the expert system as a tool to select inter-calibration reference instruments Tim to provide to Manik a list of parameters from his scoring proposal to include them into the expert system. Assigned to Due Date State DaveDoelling? 29 Feb 2016 Due now LarryFlynn? 29 Feb 2016 Due now RobRoebelling 29 Feb 2016 ? Due now ManikBali 29 Feb 2016 Due now TimHewison 29 Feb 2016 Due now

GSICS Operations Plan Actions are tracked in a topic on GSICS Development Wiki: https://gsics.nesdis.noaa.gov/wiki/Development/GsicsOperationsPlan Grown too cumbersome to use Wishlist: 2/4/20 Slide: 25 Clear actionees e.g. Chair, Agency Rep, Raporteur, Person Filterable like GSICS Product Catalog by name/open Sortable by name/org, status, open/closed date Standardised numbering Actionees Add closed dates Add outcomes (with optional links) Easier for actionees to add outcomes Automatic reminders & notifications on closure Thank You for your contributions! 2/4/20 Slide: 26 Special Issue of the IEEE TGRS on Inter-Calibration of Satellite Instruments: Infrared Sub-Group Report Tim Hewison GSICS GEO-LEO IR Product Status 2016-02 GPRC Monitored Instrument Reference Instrument GSICS NRT Correction GSICS Re-Analysis Correction GSICS Bias Monitoring

EUMETSAT Meteosat-8 11 } Meteosat-7 Metop-A/IASI Operational Demo Operational Demo Plots RAC* JMA MTSAT-1R } MTSAT-2 } IASI (+ AIRS) Demo Demo Plots RAC GOES-13 & -15 Imager GOES-11 & -12 Imager IASI (+ AIRS) Pre-op Pre-op Demo Prototype GOES Sounder IASI (+ AIRS) Development Development In development CMA FY2C E

IASI (+ AIRS) Development Development Prototype KMA COMS-1 IASI Prototype Prototype ISRO INSAT-3D IASI Prototype Prototype NOAA Full GSICS Product Catalog available at http://www.star.nesdis.noaa.gov/smcd/GCC/ProductCatalog.php 2/4/20 Slide: 28 IR Product Development within GSICS GEO-LEO IR hyperspectral Progress existing products to Operational Status Promote new products to Demonstration Status Application of Prime GSICS Correction concept 13:05 Xu Na (Remote) 13:20 Munn V. Shukla (Remote) 13:35 Arata Okuyama 13:50 Dohyeong Kim? 14:05 Yuanzheng "Jordan" Yao To merge multiple reference 11:25 Tim Hewison instruments To allow corrections to cover

16:20 Fangfang Yu? diurnal cycle Other Agencies plans for Prime GSICS Corrections? Wednesday afternoon 2/4/20 Slide: 29 CMA ISRO GEO-LEO IR Progress at CMA GEO-LEO IR Progress at ISRO 3i 3j JMA KMA NOAA GEO-LEO IR Progress at JMA GEO-LEO IR Progress at KMA GEO-LEO IR Progress at NOAA 3k 3l 3m GRWG Do we need to generate Prime GSICS NRTCs? 3g NOAA Handling Diurnal Cycle in GEO-LEO IR 3n New IR Product Development within GSICS Scope potential new GSICS products/deliverables Alternative inter-calibration algorithms Retrieved SRFs GEO-GEO inter-calibration (part of GEO-ring) LEO-LEO inter-calibration Traceability of Reference Instruments Plans for TANSO-FTS/2 &

CLARREO Wednesday morning & afternoon 2/4/20 Slide: 30 16:35 Arata Okuyama JMA v2 of GEO-LEO IR - alternative ATBDs 3o 17:45 Manik Bali NOAA SRF Retrievals 3r 9:00 Tim Hewison 9:15 Rob Roebeling 9:30 Discussion GRWG GEO-Ring Test Dataset EUMETSAT Discussion: GEO-Ring dataset preparation All Discussion: GEO-Ring dataset analysis 3a 3b 3c 18:25 Aisheng Wu NASA 3t 11:45 Rose Munro EUMETSAT Plans for AVHRR inter-calibration 17:05 Denis Jouglet (Remote) CNES Hyperspectral IR comparisons - including TANSO-FTS/2

3p 17:25 Likun Wang NOAA IR Reference Sensor Traceability and Uncertainty 3q 18:05 Tim Hewison/Tobin EUMETSAT CLARREO preparations Development of LEO-LEO IR Products 3h 3s Thank You for your contributions! 2/4/20 Slide: 31

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