Scoring Reference Instruments

Slides:



Advertisements
Similar presentations
Combining Multiple References GSICS Web Meeting
Advertisements

1EUM/RSP/VWG/16/ Tim Hewison Tom Stone Manik Bali Selecting and Migrating GSICS Inter-Calibration Reference Instruments.
1EUM/RSP/VWG/16/ Tim Hewison Tom Stone Manik Bali Selecting and Migrating GSICS Inter-Calibration Reference Instruments.
2013 GSICS Joint Meeting, Williamsburg VA, USA, March GSICS Collaboration Servers Status: 2013 Peter Miu (EUMETSAT) CMA, CNES, EUMETSAT, ISRO,
Instrument Landing Pages Challenges and Proposals.
Marianne König, Tim Hewison, Peter Miu
CLARREO Pathfinder - Overview
Inter-calibration using DCCs and seasonality
Project Team (EUMETSAT, JMA, NOAA-NCDC)
Paper under review for JGR-Atmospheres …
GSICS Inter-Calibration for Infrared Bands with Hyperspectral Sounder
GSICS TC Calibration Event Logging December 2015 Darmstadt, Germany
Minimising Uncertainty in SBAF - Using AIRS to bridge gap HIRS/2-IASI GSICS meeting, March 2014, Darmstadt, Germany - Change title to more general one.
GSICS Collaboration Servers a Vehicle for International Collaboration Status 2011 Peter Miu EUMETSAT.
Manik Bali, Aleksandar Jelenak
In-orbit Microwave Reference Records
20th CAA/DAA Cross Calibration Meeting
2017 Annual Meeting Preparation and Proposal of CLARREO-like Workshop by GSICS/IVOS Scott NSMC/CMA March 20-24, 2017.
H. Rème, I.Dandouras and A. Barthe IRAP, Toulouse, France
Traceability and Uncertainty of GSICS Infrared Reference Sensors
Second GSICS Users’Workshop:
Masaya Takahashi Meteorological Satellite Center,
SCOPE-CM: IOGEO GSICS GRWG & GDWG, March 2017, Madison, USA
Introduction to Patient Lists
Japan Meteorological Agency / Meteorological Satellite Center
Double differencing of IASI-A/B against Meteosat/SEVIRI IR Channels
Strategies to Mitigate Risk of Microwave Imager Mission Gap
Tim Hewison (EUMETSAT) (GRWG Chair)
SCOPE-CM: IOGEO GSICS GRWG & GDWG, March 2018, Shanghai, China
Combining Multiple References
Annual GSICS Calibration Report for {Agency}
Masaya Takahashi (JMA), Dohyeong Kim (KMA),
GSICS MW products and a path forward.?
Contribution to Agenda Item 8
Ongoing need for Re-Analysis Corrections? Tim Hewison
- Change title to more general one.
Planning comparison study SCM IOGEO and GSICS
GSICS Collaboration with SCOPE-CM IOGEO
Update on GSICS Product Development
EUMETSAT implementation of the DCC algorithm Sébastien Wagner
Infrared Inter-Calibration Product Announcements
SCOPE-CM: IOGEO GSICS GRWG & GDWG, March 2018, Shanghai, China
MW Products and Deliverables
Developing Spectral Corrections / SRF Retrievals Tim Hewison
Dorothee Coppens.
GSICS IR Reference Uncertainty & Traceability Report
IR hyperspectral comparisons
Status of the EUMETSAT GSICS DCC product
GSICS Research Working Group Web Meeting :00-13:00 UTC Reference Instruments and their Traceability.
Meteorological Satellite Center, Japan Meteorological Agency
Viju John, Rob Roebeling, Tim Hewison
Developing GSICS products for IR channels of GEO imagers Tim Hewison
Progress toward DCC Demo product
Spectral Correction for Inter-comparion between VIIRS and MODIS TEB
Hot summary of the Fourth GSICS Users Workshop
GSICS IR Reference Uncertainty & Traceability Report Tim Hewison
SCOPE-CM Statement of Needs John Bates (NOAA, SCOPE-CM Executive Panel Chair) Lothar Schüller (EUMETSAT, SCOPE-CM Secretariat)
Formation of IR Sub-Group and Reference Selection
Progress on FY-3 IR GSICS inter-calibration system
Na XU Xiuqing HU Lin CHEN Ling SUN NSMC CMA
Variogram Stability Analysis
IASI / AIRS / CRIS cross-calibrations 5a 0:20
Infrared Sub-Group Report Tim Hewison
GSICS: A WIGOS Component
GSICS IR Reference Uncertainty & Traceability Report
Discussion Way Forward for Multispectral IR
Aid to Users Selection of GSICS Products Thoughts on need for RAC/ARC products Tim Hewison EUMETSAT.
Traceability and Uncertainty of GSICS Infrared Reference Sensors
GRWG Summary Decisions, Actions, Recommendations
Towards a GSICS DCC product...
Presentation transcript:

Scoring Reference Instruments Scoring with Oscar

Previously, proposed [2014-07-23]… Selecting Anchor Reference Do we need to keep score? Previously, proposed [2014-07-23]… Selecting Anchor Reference Scoring all potential reference sensors Based on performance against requirements Based on contribution to uncertainty Still needed? If so, … Could use WMO OSCAR to keep score But not all parameters included in database Could define scores offline & enter manually Visualise available references over long time series

Application of OSCAR Gap Analysis It is not practical to maintain all the factors of uncertainty and systematically derive the « score » in OSCAR GSICS can compute the « score » outside of OSCAR, using its weighted combination of normalized criteria The GSICS score is entered in OSCAR as instrument « property » for candidate reference sensors «Intercalibration Reference» mission is created in OSCAR Instruments are rated (from 1 to 5) for this mission according to their GSICS score (from 1 to 0) GSICS owns the scoring algorithm and provides updates

03 January 2019 This allows drawing a Gap Analysis for GSICS Inter-calibration References The advantage of using OSCAR is to link the scoring information, provided by GSICS, with the OSCAR information about instrument launch plans and status. The advantage of using OSCAR is to link the scoring information, provided by GSICS, with the OSCAR information about instrument launch plans and status. The advantage of using OSCAR is to link the scoring information, provided by GSICS, with the OSCAR information about instrument launch plans and status.

03 January 2019 Among the « gap Analysies by type of mission » we can select « GSICS IR Intercalibration » mission, which is defined in a short sentence, with a possibility to filter the result to only some of the spectral bands of the relevant instruments.

03 January 2019 Actual or firmly planned availability of sensors contributing to « GSICS IR Intercalibration » mission. The instruments which have a positive score appear on the Gap Analysis chart, with the colour code corresponding to their GSICS score. The grey bar at the bottom enables shifting the chart time window . Scrolling to the left will display early years where only HIRS data are available, while scrolling to the right will show future sensors of JPSS/CrIS and METOP/IASI-NG. The time chart shows the actual or firmly planned availability of sensors contributing to « GSICS IR Intercalibration » mission. Non-functional sensors or future sensors with no confirmed launch plan are thus excluded.

03 January 2019 A table displays all sensors specified to contribute to the mission, including non-functional ones or future sensors with no confirmed launch plan (e.g. CLARREO/Infrared spectrometer ) The CLARREO-1A Infrared spectrometer cannot be shown on the time chart since there is no confirmed operating period, but is listed in the table below the chart. In spite of its excellent performance in the 5 -8 and 8 – 15 µm it is rated only 2 because the 3-5 µm is missing.

Previously, proposed [2014-07-23]… Selecting Anchor Reference Discussion Previously, proposed [2014-07-23]… Selecting Anchor Reference Scoring all potential reference sensors Based on performance against requirements Based on contribution to uncertainty Still needed? If so, … Could use WMO OSCAR to keep score But not all parameters included in database Could define scores offline & enter manually Visualise available references over long time series How to pursue this offer?

Dealing with Multiple References IR Sub-Group Discussion: Dealing with Change (IR Reference Sensors)

IR Sub-Group Discussion Multiple hyperspectral reference sensors: IASI on Metop-A, -B, CrIS on SNPP, NOAA20 AIRS on Aqua HIRAS?

GEO-LEO IR Update - CrIS Accept CrIS as GSICS Reference? Is its calibration „in family“? (wrt IASI-A/B) Is its calibration stable? Is its data freely available? With sufficient latency? What other questions should we ask?

IR Sub-Group Discussion What to do for GEO-LEO IR Products? NRTC Just switch RefA->RefB Switch RefA->RefB+∆ Just average all* Refs (within limits) Full Prime GSICS Corrections RAC Useful for case studies? Re-processing, Re-calibration, FCDR, …?

Dealing with Multiple References for FCDR Generation Define ∆ Corrections Based on stable overlaps Apply to all* references * at least all with stable references Merge together Applying delta corrections “Prime GSICS Correction” Version changes: Or Split time series When reprocessing impossible (e.g. onboard changes) Reprocess whole dataset Where possible Need to regenerate FCDR When any component changes Introduce review cycles RefAv1 RefAv2 ∆A1B1 ∆A2B2 RefBv1 RefBv2 Time

IASI on-board processing change Dealing with Change IASI on-board processing change Step change in Reference sensor record Split before/after change Treat as separate sensors? Automatically check for step changes But what about drifts?