GSICS Microwave Sub-Group Web Meeting on Re-formation Tim

GSICS Microwave Sub-Group Web Meeting on Re-formation Tim Hewison 6 August 2013

Agenda • Tim Hewison (EUMETSAT) – Background on GSICS • Tim Hewison (EUMETSAT) – Scope of Microwave Sub-Group • Tim Hewison (EUMETSAT) – Chairing Microwave Sub-Group • Fangfang Yu (NOAA) – Review of MSU/AMSU Re-Calibration Product • Tiger Hu (CMA) - FY 3 -MWRI calibration evaluation, including the results of inter-cal with AMSR-E and TMI • Qifeng Lu (CMA) - Characterize the FY-3 MWTS using NWP fields • Arata Okuyama (JAXA) - AMSR 2 calibration/characterization • All - Discussion of possible Sub-Group meetings

Global Space-based Inter-Calibration System • What is GSICS? – Global Space-based Inter-Calibration System – Initiative of CGMS and WMO – Effort to produce consistent, well-calibrated data from the international constellation of Earth Observing satellites • What are the basic strategies of GSICS? – Improve on-orbit calibration by developing an integrated inter-calibration system • Initially for GEO-LEO Inter-satellite calibration • Being extended to LEO-LEO • Using external references as necessary – Best practices for prelaunch characterisation (with CEOS WGCV) • This will allow us to: – – – Improve consistency between instruments Reduce bias in Level 1 and 2 products Provide traceability of measurements Retrospectively re-calibrate archive data Better specify future instruments EUMETSAT CNES JMA NOAA CMA KMA ISRO NASA WMO USGS NIST JAXA ROSHYDROMET IMD ESA

GSICS Principles • Systematic generation of inter-calibration products • for Level 1 data from satellite sensors • to compare, monitor and correct the calibration of monitored instruments to community references • by generating calibration corrections • with specified uncertainties • through well-documented, peer-reviewed procedures • based on various techniques to ensure consistent and robust results • Delivery to users • Free and open access • Adopting community standards • To promote • Greater understanding of instruments’ absolute calibration, by analysing the root causes of biases • More accurate and more globally consistent retrieved L 2 products • Inter-operability for more accurate environmental, climate and weather forecasting products TRACEABILITY / UNBROKEN CHAINS OF COMPARISONS

Who are the targeted users? Any activity requiring well calibrated Level 1 data acquired by the satellites covered by GSICS - Level 2 products (geophysical parameters) - Climate applications Example of user = the SCOPE-CM initiative (Sustained Coordinated Processing of Environmental Satellite Data for Climate Monitoring) Scope generate multi-mission and global satellite climate data records (Fundamental CDRs & Thematic CDRs) Level 1 b/c Data (Radiances) GOS Corrections GSICS FCDR Statement of Needs TCDR SCOPE-CM The way toward operational production of high quality ECVs on a global scale

GSICS User Community • Satellite Application Community – CDR generation for climate monitoring “SCOPE-CM” framework, national/international programs WCRP/ISCCP - (Planned beta-testing of GEO GSICS Corrections) – Reanalysis community for climate modelling (ECMWF reanalysis – 2012/15) – Operational NWP: direct radiance assimilation – Other users interested in accurate/consistent calibration • Satellite Operators – Prelaunch instrument characterization guidelines – Cal/Val Plans – Best practices for instrument monitoring and improved calibration Ø Affiliation with partner programmes – CEOS WGCV, GPM X-cal, GHRSST, GRUAN, etc. . .

GSICS Products • GSICS Bias Monitoring • Routine comparisons of satellite radiances against reference • GSICS Correction • Function to correct issued radiances • For consistent calibration with reference • GSICS Reports & Guidelines • Recommendations to modify practices • Design and Operation of future satellite instruments • For Operational Environmental Satellites Infra-red recalibration (GEO and LEO) (current operational satellites) Visible and near-infrared recalibration (GEO and LEO) Microwave – Conical & Cross-track Scanners (LEO) Historic Instruments Pre-Operational & Demo status Near real-time and re-analysis In development within GSICS In development with GPM XCAL In development at EUMETSAT…

GSICS Procedure for Product Acceptance • Products progress from • Demonstration Mode • Through • Pre-Operational Mode • To • Operational Mode • By a series of reviews • Over period of ~1. 5 yr • Subject to meeting acceptance criteria

GSICS Products • Developed by GSICS: – GEO-LEO IR – Prototype-Demonstration-Pre-Op – GEO-LEO VIS – In Development – GEO-LEO Archive Re-Calibration – In Development • Developed by 3 rd parties: – PATMOS-X – AMSU-MSU – GPM XCAL?

GRWG Sub-Groups - Motivation Issue: Increasing Expectations – Non-increasing Resource Support • Following our initial success with GEO-LEO infrared and users’ demand for further inter-calibration products, • GSICS is aiming to expand to cover other instruments and other parts of the spectrum. • This requires the development of multiple techniques appropriate for different spectral bands. • It is difficult for one person to keep abreast of all the developments in each of these areas, let alone guide the development of future products. Concept: • Instead of vice-chairs, identify Chairs of Sub-Groups

Possible Sub-Groups • Possible Sub-Groups include, but are not limited to: a) Microwave (covering imagers and sounders) – this group already exists, but needs a Chair and review of membership – members need to be encouraged to review GPAF for MSU/AMSU/SSU Demo Product b) Vis/NIR : GEO/LEO c) IR: GEO/LEO – GRWG chair could chair, if replacement found d) Ultra-violet channels/instruments e) Archive Re-Calibration of historic instruments (FCDR generation) ? f) Use of Synthetic observations for inter-calibration (NWP/RAOB+RTM) ?

Scope of Microwave Sub-Group • Understanding the users’ requirements for inter-calibration products for microwave instruments – Imagers + sounders – passive only, initially? • Identifying existing products that could meet those requirements • Encouraging the creators of those products to submit them to the GSICS Procedure for Product Acceptance (GPPA) • Reviewing these products to ensure they adhere to GSICS principles with other members of the Sub-Group and users. – 1 st candidate product is under review: Cheng-Zhi Zou’s MSU-AMSU recalibration. • It is also possible that potential GSICS Products could be developed within the Microwave Sub-Group. • Coordination with other groups (such as the CEOS Microwave Sub-Group) would also be required to generate standards and best practices for microwave radiometer calibration.

Meetings of Microwave Sub-Group • Mostly web meetings – Max 2. 5 hr: • 11: 00 -13: 30 UTC in summer • 11: 30 -14: 00 UTC in winter • Session at Annual GSICS Working Group meeting? – Next: 24 -28 March 2014 @ EUMETSAT, Germany • Break-out session at Conference/Workshop?

2014 GRWG+GDWG Meeting Next annual GRWG+GDWG meeting: • Tentative Dates: 24 -28 March 2014 • Tentative Location: EUMETSAT • Format: – Mon: 1 Day Mini Conference – Tues: Plenary – GPRC Reports and WG Briefs – Wed: GRWG+GDWG Breakouts – Thur: GRWG+GDWG Breakouts – Fri am: Plenary – wrap-up 2014 GSICS Users’ Workshop: • Asia? EUMETSAT Headquarters, Darmstadt, Germany - in the sunshine!

Members Signed up as at 2013 -08 -05 • • • • David Walker (NIST) Isaac Moradi (Uni Maryland/NOAA) Wenze Yang (Uni Maryland) Linwood Jones (Uni Central Florida) Huan Meng (NOAA) Hu ("Tiger") Yang (CMA) Cheng-Zhi Zou (NOAA) Songyan Gu (CMA) Qifeng Lu (CMA) Jörg Ackermann (EUMETSAT) Wes Berg (Colorado State University) Ed Kim (NASA-GSFC) Dong-Bin Shin (Yonsei University, South Korea) Keiji Imaoka (JAXA) Misako Kachi (JAXA) Karsten Fennig (DWD for EUMETSAT Climate Monitoring Satellite Application Facility)

Chairing Sub-Groups • GRWG chair invited applications to chair sub-groups, – outlining proposed scope and working plan – to develop GSICS products for a specific application or spectral band – and send that to the GRWG Chair by 1 June 2013 (in time for Exec Panel meeting). • Exec Panel ruled: • The GRWG leads and subgroup leads should be officially GRWG members; they should thus be appointed to GRWG by one of the GSICS member agencies.

Role of Microwave Sub-Group Chair • • • I see the role of chair as being one of coordination, nurturing and leadership: Coordinating reviews Coordination with other groups (such as the CEOS Microwave Sub-Group) would also be required to generate standards and best practices for microwave radiometer calibration. • All this would require: – – – Organising and Chairing a few web meetings a year, Monitoring actions related to the development of inter-calibration products in their field, Sending out emails (and reminders) and Reporting to the Exec Panel and/or Research Working Group Chairing a session at the working group meetings (or elsewhere) ? - if sufficient number of people are able to attend

Defining Sub-Group Chair • Received tentative offers for Microwave Sub-Group: • • • Isaac Moradi (University of Maryland – representing NOAA) David Walker (NIST) Cheng-Zhi Zou (NOAA)

Agenda • Tim Hewison (EUMETSAT) – Background on GSICS • Tim Hewison (EUMETSAT) – Scope of Microwave Sub-Group • Tim Hewison (EUMETSAT) – Chairing Microwave Sub-Group • Fangfang Yu (NOAA) – Review of MSU/AMSU Re-Calibration Product • Tiger Hu (CMA) - FY 3 -MWRI calibration evaluation, including the results of inter-cal with AMSR-E and TMI • Qifeng Lu (CMA) - Introducing the status of the FY-3 sounding data for NWP application • Arata Okuyama (JAXA) - AMSR 2 calibration/characterization • All - Discussion of possible Sub-Group meetings

Agenda • Tim Hewison (EUMETSAT) – Background on GSICS • Tim Hewison (EUMETSAT) – Scope of Microwave Sub-Group • Tim Hewison (EUMETSAT) – Chairing Microwave Sub-Group • Fangfang Yu (NOAA) – Review of MSU/AMSU Re-Calibration Product • Tiger Hu (CMA) - FY 3 -MWRI calibration evaluation, including the results of inter-cal with AMSR-E and TMI • Qifeng Lu (CMA) - Characterize the FY-3 MWTS using NWP fields • Arata Okuyama (JAXA) - AMSR 2 calibration/characterization • All - Discussion of possible Sub-Group meetings