Special Issue of the IEEE TGRS on “Inter-Calibration of Satellite Instruments”: 01 December 2018 GRWG Report and Briefing Tim Hewison Microwave Sub-Group Report on behalf of Cheng-Zhi Zou

Overview Where are we now? Where do we want to be in 1yr? Review of GSICS Products status Summary of 2013/14 Web Meetings Review of Actions Where do we want to be in 1yr? Target Product status Towards GSICS Vision: Integrating GSICS into WIGOS How do we get there? Management restructuring Review of Product types Plan 2014/15 Web Meetings

Where are we now? 49.86503°N 8.62717°E Review of GSICS Products status Summary of 2013/14 Web Meetings Review of Actions

GSICS Product Status 2014-03 GPRC Monitored Instrument 01/12/2018 GSICS Product Status 2014-03 GPRC Monitored Instrument Reference Instrument GSICS NRT Correction GSICS Re-Analysis Correction GSICS Bias Monitoring EUMETSAT Meteosat-8 – 10 } Meteosat-7 Metop-A/IASI Demo/Pre-operational Prototype JMA MTSAT-1R } MTSAT-2 } IASI (+ AIRS) Demonstration Demo NOAA GOES-13 & -15 Imager GOES-11 & -12 Imager Pre-op GOES Sounder Development In development CMA FY2C – E AMSU/MSU NOAA14/AMSU Pre-Op Patmos-X TIROS-N – NOAA – Metop /AVHRR Aqua/MODIS - Full GSICS Product Catalog available at http://www.star.nesdis.noaa.gov/smcd/GCC/ProductCatalog.php

IR Product Development within GSICS GEO-LEO IR hyperspectral Progress to Operational Status Integration of delta correction to convert reference Application over diurnal cycle Thursday morning

VIS/NIR Product Development within GSICS Deep Convective Cloud (DCC) For Visible Channels Reference: Aqua/MODIS Monitored instruments: GEO imagers Wednesday morning Lunar Calibration VIS/NIR Reference: ROLO -> Aqua/MODIS Monitored instruments: GEO imagers, LEO imagers... Wednesday afternoon

GSICS Web Meetings 2013/14 Date Group Topics 2014-02-06 GRWG - UVSubGroup Selection of UV Sub-Group Chair 2014-01-08 GRWG - D. Doelling DCC Algorithm Application - Part III 2013-12-03 GRWG -MicrowaveSubGroup Microwave Sub-Group Meeting - Review of NOAA MSU/AMSU FCDRs 2013-11-13 UV Sub-Group Formation 2013-10-15 GRWG - T. Hewison Propose scoring scheme to select reference instrument 2013-09-24 GRWG - R.Roebeling GSICS Requirements from SCOPE-CM Phase 2 Proposals 2013-08-14 DCC Algorithm Application - Part II 2013-08-06 GRWG - MicrowaveSubGroup Microwave Sub-Group Reformation 2013-07-03 Rayleigh scattering ATBD 2013-06-11 Calibration Change Alerts - including GEO-GEO NRT 2013-05-29 DCC Algorithm Application - Part I (+SCIAMACHY data availability)

Outstanding Actions on GRWG Action Ref Description Assigned to Due Date State GRWG06_25 Improved characterisation of desert sites, provide information on progress to GRWG (Update: on-going effort) – will be superseded by new actions GRWG(Doelling+Wu+Xiong+Chander Jun 2011 Closed Joint07_3R GRHSST is invited to review one or more of the current GSICS GEO IR product and to provide feedback to GRWG - will follow up in IVOS for MSG NOAA (Liang) Mar 2013 Open – GRWG07_02 Outline ATBD for Rayleigh Scattering - Presented at Web Meeting - need to upload to GSICS wiki CNES Dec 2012 Open GRWG07_03 Extract the tropical DCCs from the MODIS archive and make that data available to all GPRCs, data issues to be discussed with GDWG - Will discuss in DCC session NASA(Doelling)+GDWGChair(Jelenak) Sept 2012 Open? GRWG07_08 X. Liang to present the NWP bias monitoring for ATSR & MODIS in 2013 GRWG meeting open

Outstanding Actions on GRWG Action Ref Description Assigned to Due Date State GRWG05_04/05 Review error propagation example and consider how it could apply their solar channel calibration method GRWG (Solar Pis) Mar 2011 closed GRWG06_04 Outline ATBD for the sun-glint method NOAA (Heidinger) open GRWG06_08 Outline ATBD for the desert method CNES Jun 2011 GRWG06_16 Compile a list of existing activities concerning composite satellite imagery All GPRC to EUMETSAT 01 Jun 2011 Closed See Wiki GRWG06_17 Find out time overlaps between geostationary satellites (commissing and operational periods), find out about the availability of such data and publish this information on GSICS wiki All GPRCs 01 Dec 2011

Status of Outstanding Actions Action Ref Description Assigned to Due Date State EP-12.04 GRWG to investigate feasibility of intercalibration of reflected solar band instruments (including GOME-1, GOME-2, SCIAMACHY) with participation of ESA - Follow up with web meeting on SBAF Main.GRWG 01 Mar 2013 Close EP-12.18 ESA (Bojan Bojkov ) to report at GRWG on its survey on the state of the art for geolocation issues, and on ESA activity on this subject Main.WMO(Lafeuille) GWG_13.4 The GPRC members responsible for the development of new products to communicate requirements to archive data to GDWG chair during prototyping phase. Main.GPRC 01 Dec 2014 GWG_13.6 GRWG Chair to ask for volunteer to lead the development of suitable guidelines to define Common Reference Channels, based on the analysis performed for the Spectral Band Adjustment Factors. TimHewison GWG_13.13 GRWG Chair to set up web meeting to define Best Practice for Process of defining SBAF and uncertainties by 1 June 2013. 01 Jun 2013 Thurs pm

Status of Outstanding Actions Action Ref Description Assigned to Due Date State GWG_13.29 GRWG + GDWG Chairs to solicit proposals from any GSICS member wishing to be considered as GRWG or GDWG chair by drafting a 1-2 page proposal to the Exec Panel by 1 July 2013. TimHewison 01 Jul 2013 Closed, but offer open! GRWG05_38 The GRWG is required to inform the GDWG on what GSICS products are required to be archived. Main.GRWG, Main.Chair(Hewison) 01 Jan 2012 Closed On GDWG agenda EP-12.17 GRWG Chair to report on GSICS traceability approach to the WGCV, with a view to seek feedback from WGCV.  - Done at WGCV plenary in Feb 2014 01 Oct 2012 EP14.23 The GRWG Chair to describe the role of chair, emphasizing the moderator role, enabling, elevating/communicating issues to the appropriate parties. Main.WMO(Lafeuille) 01 Sep 2013 Started on Wiki GUW-13.01 Executive Panel to discuss if the GSICS scope should be expanded to include the operational calibration alerting system. Main.Exec, Main.Panel 01 Jun 2014

GSICS Action Tracking Tool Currently performed by GSICS Operations Plan topic on Wiki: https://gsics.nesdis.noaa.gov/wiki/Development/GsicsOperationsPlan Suggested improvements: Add date closed – or replace due date Allow actions raised in web meetings to be entered Identify responsible person for each action Automatic reminders Allow outcomes to be recorded inline/links Allow items to be filtered – by actionee, status, date, ... – would allow customised views

Where do we want to be in 1yr? Not just where to host the next GRWG/GDWG meeting... Target Product status Towards GSICS Vision: Integrating GSICS into WIGOS

Where do we want to be in 1yr? - Target Status for Current Products GEO-LEO IR hyperspectral: Operational!! With embedded Delta Corrections GEO-LEO VIS DCC: First Demo products GEO-LEO/ROLO VIS/NIR Moon: Define potential GSICS Products Generate prototype products Bias Monitoring Plotting tool: Functional for all above

Where do we want to be in 1yr? - Target for New Product Developments Definition of Potential Future Products: Archive Re-Calibration NWP-based Inter-calibration Rayleigh scattering Integration of VIS/NIR methods Microwave Sounders/Imagers: Temperature Channels Humidity Channels Window Channels UV instruments

Where do we want to be in 1yr? - Interaction with other activities Towards GSICS Vision: Integrating GSICS into WIGOS Support Architecture for Climate Monitoring from Space Definition of Archive Re-Calibration products Define interaction with other activities: SCOPE-CM (Monday pm) GPM X-CAL (through MWSG) WGCV Sub-Groups – IVOS, MWSG, UVSG (Friday am) GRUAN-GSICS-GNSSRO Workshop on Upper-Air Observing System Integration & Application, 6-8 May 2014, WMO HQ Geneva

GRUAN-GSICS-GPSRO-NWP Interaction Concept GPS Radio Occultation Observations Inversion Radiosonde Profiles GPS RO Profiles NWP Model Profiles Radiative Transfer Model Radiances Radiances Radiances Satellite Radiances

GRUAN-GSICS-GPSRO-NWP Interaction Concept GPS Radio Occultation Observations Inversion Inversion Inversion Radiosonde Profiles GPS RO Profiles NWP Model Profiles Radiosonde Profiles GPS RO Profiles NWP Model Profiles Radiosonde Profiles GPS RO Profiles NWP Model Profiles Radiative Transfer Model Radiative Transfer Model Radiative Transfer Model Radiances Radiances Radiances Satellite Radiances Satellite Radiances Satellite Radiances

GRUAN-GSICS-GPSRO-NWP Interaction Concept GPS Radio Occultation Observations Inversion Inversion GRUAN Inversion Radiosonde Profiles GPS RO Profiles NWP Model Profiles Radiosonde Profiles GPS RO Profiles NWP Model Profiles Radiosonde Profiles GPS RO Profiles NWP Model Profiles Radiative Transfer Model Radiative Transfer Model Radiative Transfer Model Radiances Radiances Radiances GSICS Satellite Radiances Satellite Radiances Satellite Radiances

How do we get there? Review of Product types Management restructuring Plan 2014/15 Web Meetings

GSICS Product Types Product Type: Re-Calibration of Archive Data NRTC/RAC/ARC (Archive Re-Calibration) Re-Calibration of Archive Data Found a jump/drift/cycle in the RAC time series? Improve the algorithm! Go to version n+1 Keep processing data Re-process previous data = ARC? So if we have ARC, do we still need RAC products?

GSICS Organisation CGMS WMO GSICS Exec Panel GSICS Coordination Center GSICS Research Working Group VIS/NIR Sub-Group WGCV IVOS Microwave Sub-Group WGCV MWSG GPM X-CAL UV Sub-Group WGCV ACSG CEOS ACC Future Sub-Groups... GSICS Data Working Group

Scope of GRWG Sub-Groups Understanding users’ requirements for inter-calibration products Identifying existing products that could meet those requirements Encouraging  the creators of those products to submit them to the GPPA Reviewing these products with other members of the Sub-Group and users to ensure they adhere to GSICS principles Developing new inter-calibration products, based on GSICS principles. Submitting these to the GPPA Liaison with users as beta testers Interaction with GSICS Data Working Group To ensure products are made available to users Adhering to GSICS standards Ensure all required data is available to researchers & users Generation of standards and best practices In coordination with other groups (such as WGCV Sub-Groups)

Defining Management Roles & Responsibilities We need to define roles and responsibilities of the GRWG it’s chair sub-groups and respective chairs. Currently in development on GSICS Dev Wiki: https://gsics.nesdis.noaa.gov/wiki/Development/RolesAndResponsibilities The wording of these including scope and activities are quite sensitive and should be reviewed carefully. Review by email/web meeting? Once agreed, could publish them on the GCC website.

Future Chairing Exec Panel introduced Vice-Chair concept GDWG Where vice-chair takes over from chair With 1 year terms (short!) GDWG Vice-Chair intends to take over chair in 2015 Chair: 3 year terms (with possible extensions) GRWG Vice-Chair Vice-Chair could take over chair in 2015 Consider forming IR Sub-Group Offers to take over?

GSICS Web Meetings 2014/15 Date Group Topics GRWG - A. Heidinger Sunglint algorithm update   GRWG - T. Hewison Best Practice for Process of defining SBAF and uncertainties GRWG+GDWG - T. Hewison File format for Delta Corrections GRWG+GDWG - R.Roebeling Event Logging GSICS Roles & Responsibilities? Identify potential topics for web meetings Will review list on Friday morning

Thank you!

GSICS Microwave Sub-Group Report Cheng-Zhi Zou and Tim Hewison GSICS GRWG/GDWG Annual Meeting, Darmstadt, Germany, 25-28 March 2014

Reformation Reformation: 6 August 2013 Current Members Cheng-Zhi Zou (Chair) NOAA cheng-zhi.zou@noaa.gov David Walker NIST david.walker@nist.gov Dong-Bin Shin Yonsei Univ. dbshin@yonsei.ac.kr Ed Kim NASA edward.j.kim@nasa.gov Huan Meng NOAA huan.meng@noaa.gov Isaac Moradi Univ. Maryland imoradi@umd.edu Jörg Ackermann EUMETSAT joerg.ackermann@eumetsat.int Karsten Fennig DWD Karsten.Fennig@dwd.de Keiji Imaoka JAXA imaoka.keiji@jaxa.jp Linwood Jones CFRSL ljones5@cfl.rr.com Misako Kachi JAXA kachi.misako@jaxa.jp Qifeng Lu CMA luqf@cma.gov.cn Songyan Gu CMA gusy@cma.gov.cn Tigar Yang NOAA hu.yang@noaa.gov Tim Hewison EUMETSAT Tim.Hewison@eumetsat.int Wenze Yang NOAA ywze98@umd.edu Wesley Berg Colorado State Univ. berg@atmos.colostate.edu

Mission Goals/Objectives Foster high quality calibration and inter-calibration of microwave sensor products for weather and climate prediction as well as environmental monitoring. These include both active and passive sensors, but initially only focuses on passive sensors of sounders and imagers Facilitate international cooperation and co-ordination in microwave sensor calibration / inter-calibration activities by sharing information on sensor development and field campaigns Promote accurate calibration/inter-calibration of microwave sensors, through standardization of terminology, measurement practices, and algorithm development Provide a forum for discussion of current issues and for exchange of technical information on evolving technologies related to microwave sensor calibration /inter-calibration

Mission Goals/Objectivs Practicing GSICS Procedure for Product Acceptance (GPPA), include encouraging and reviewing calibrated/inter-calibrated microwave products to be submitted to GPPA Develop GSICS inter-calibrated products within the Microwave Sub-Group Coordination with other groups (such as the CEOS Microwave Sub-Group) to generate standards and best practices for microwave radiometer calibration Recommend high quality calibrated/inter-calibrated microwave products to the weather/climate user community to improve environmental prediction and monitoring capability

First Microwave Sub-Group Web Meeting Meeting Date: December 3, 2013 Purpose: Practicing GSICS Procedure for Product Acceptance (GPPA) ->Review NOAA inter-calibrated MSU/AMSU FCDR using Integrated Microwave Inter-Calibration Approach (IMICA) 21 participants 7 Reviewers, including internal and external to NOAA Fangfang Yu introduced GPPA procedure Product Developer (Cheng-Zhi Zou) made presentation to introduce products 4 Reviewers made review presentation, 3 sent email reviews GCC DD (Manik Bali) summarized review results: all reviews positive After review, GPPA recognized that the AMSU/MSU product had fulfilled all the conditions for the demonstration Phase GCC Director (Larry Flynn) made decision to accept the MSU/AMSU Product in GSICS in Demonstration Phase GCC Director sent Appreciation Certificate to reviewers

Post Meeting Activities on MSU/AMSU Product GCC recommended MSU/AMSU FCDR product go to pre-operational phase after EP approval GPPA received EP approval email MSU/AMSU FCDR product went to GSICS pre-operation phase

Coordination/Collaboration Activities Cheng-Zhi visited CMA/NSMC on January 12, 2014; discussed with Songyan Gu (MW member) on FY-3 microwave sensor status; invited Songyan to give a presentation at the GSICS GRWG/GDWG Annual Meeting. The talk is arranged on Thursday Cheng-Zhi also discussed with CMA/NSMC Qifeng Lu on possible frequency shift of MSU/AMSU or model biases in interpretation of AMSU-model biases. Both Cheng-Zhi and Qifeng will give presentations at the GSICS GRWG/GDWG Annual Meeting to discuss the issue. Collaboration between NOAA and CMA/NSMC is being planned to further investigate the issue. The presentations are arranged on Thursday. Cheng-Zhi visited CMA/CAMS to discuss possible applications of inter-calibrated MSU/AMSU FCDR in resolving diurnal problems over the Tibetan area Tim Hewison with Xiaolong Dong, Chair of the CEOS Microwave Subgroup, on possible collaboration/coordination. Invited Dr. Dong to give a presentation at the GSICS GRWG/GDWG Annual Meeting, arranged on Thursday

Thank you!