1. 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

2. 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

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

4. GSICS Product Status 2014-03 GPRC Monitored Instrument
01/12/2018
GSICS Product Status
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

5. 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

6. 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

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

8. 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

9. 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

10. 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

11. 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

12. GSICS Action Tracking Tool
Currently performed by GSICS Operations Plan topic on Wiki:
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

13. 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

14. 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

15. 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

16. 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

17. 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

18. 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

19. 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

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

21. 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?

22. 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

23. 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)

24. 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:
The wording of these including scope and activities are quite sensitive and should be reviewed carefully.
Review by /web meeting?
Once agreed, could publish them on the GCC website.

25. 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?

26. 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

27. Thank you!

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

29. Reformation Reformation: 6 August 2013 Current Members
Cheng-Zhi Zou (Chair) NOAA
David Walker NIST
Dong-Bin Shin Yonsei Univ.
Ed Kim NASA
Huan Meng NOAA
Isaac Moradi Univ. Maryland
Jörg Ackermann EUMETSAT
Karsten Fennig DWD
Keiji Imaoka JAXA
Linwood Jones CFRSL
Misako Kachi JAXA
Qifeng Lu CMA
Songyan Gu CMA
Tigar Yang NOAA
Tim Hewison EUMETSAT
Wenze Yang NOAA
Wesley Berg Colorado State Univ.

30. 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

31. 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

32. 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 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

33. 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
MSU/AMSU FCDR product went to GSICS pre-operation phase

34. 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

35. Thank you!