1. WGISS/WGCV Session summary and WGCV Action Item Status
K. . Thome
NASA
WGCV Plenary # 43
INPE, Sao Jose dos Campos
April 10-13, 2018

2. WGISS/WGCVJoint Session - Summary
Discussions covered common areas and topics in the ongoing/planned WGs activities which could benefit from cooperation between the two groups:
Ways to describe and share available facilities, expertise, resources, technical information and documentation
Topics of common interest with natural synergies
Defined tasks to define a way forward
Agreed to monitor progress through periodic joint calls

3. WGISS/WGCV Joint Session – Topics discussed
Four broad topics summarized and discussed leading to a set of concrete tasks
Data Formats and Interoperability in the framework of FDA
Robert Woodcock (WGISS), Medhavy Thankappan (WGCV)
Quality Indicators in Discovery Metadata
Michael Morahan (WGISS), Nigel Fox (WGCV)
CEOS Data Cubes and CEOS Test Sites Data Access in support of WGCV Activities
Robert Woodcock (WGISS), Greg Stensaas (WGCV)
Standardization and Best Practices (e.g. ISO )
Richard Moreno (WGISS), Cindy Ong (WGCV)

4. Data Formats and Interoperability in the frame of FDA
Objective: Ensure users a seamless access and usability of data from multiple sensors including tools to use data from multiple sensors
Example case for surface reflectance showing the range of possible challenges in creating a consistent time series across multiple processing schemes
Data format is not the biggest issue to solve related to interoperatbility
Format conversion is pretty well understood and WGISS is investigating ways to provide that service
Recognize that the definition of ARD is necessarily broad and we should not let this prevent progress on understanding how to communicate uncertainties and data quality
Task:
ARD uncertainty: Work to define a set of quality/uncertainty parameters to include within ARD and determine an initial method to incorporate these along with their provenance into the data stream, including education of the data community on how to provide provenance information

5. Quality Indicators in Discovery Metadata
Objective: Ensure quality and uncertainty information availability (discovery and access) for users
Measurement equation must be embedded in a way
There exist a set of key quality metrics that are useful and indicators 
QI should be tagged at all stages with a link to the earlier stages and is locked into the future
Discussion on where to go forward – QI is well defined but concrete cases will always have different levels and flags  
Describing QI is not easy and more difficult to do it for the user readability
Keep in mind that quality is defined by end user – fitness for purpose is defined by end user
Tasks:
QI Test case: Evaluate whether SST would provided a suitable test case for QI development that can act as an expressive case for QI access and implement this or an alternate case as determined through this acitivity

6. CEOS Data Cubes and CEOS Test Sites Data Access in support to WGCV Activities
Objective: Data Cubes (or similar stacking of data over time for specific locations) test cases
Exist a range of data sets already available through the cal/val portal such as Landnet; plus QA4EO activities; and LPCS 
Need a way to get those data more available to users
Recommendation – Focus on IVOS and LPV and key GEO applications including obtaining data over key test sites (WGCV) and pushing this process to CEOS SIT/LSI VC/WGCV/WGISS 
Also need to simplify the problem from a WGISS hat and concentrate on analyzable and get an on-demand analytics environment to do what users want  
Task:
LPV supersite data access test case: LPV supersites are a good test case related to validation with a broad user community. Objective is to provide an improved user access to the LPV supersite data sets coupled with analytics tools to provide improved results for the users

7. Standardization and Best Practices
Objective: Contribution on CEOS Best Practice/White Paper
Discussion from 2016 is still valid today
Work on actions from 2016 still remains
Tasks:
Revisit and update WGISS-41/WGCV-40 actions: Define a point of contact within WGCV to work with WGISS to reinvigorate the actions of WGISS-41 in terms of more recent CEOS activities and move towards closure of these items to provide a good practice white paper for inclusion on the CEOS website

8. WGCV Action Item status
Open Action Item (AI) from the last WGCV meetings:
1 from WGCV-38
5 from WGCV-39
3 from WGCV-40
2 from WGCV-41
11 from WGCV-42

9. WGCV-38 Action Item Status#
Action Item
Lead
Due Date
Status
WGCV
IVOS Chair to setup a doodle poll regarding availability of participants for a follow-up telecon to the October WebEX session with user community on the development of best practices for use of External Solar Irradiance Spectrum
IVOS chair (N.Fox)
New due date (WGCV 39) is End of September 2016
Closed at WGCV-42 based on activities with GSICS Webex telecons
WGCV
MWSG Chair to provide definition /information of his sub-group to B. Bojkov and A. Burini (ESA) for hosting on cal/val portal
X. Dong
WGCV-39
Pending complet ion of WGCV

10. WGCV-39 Action Item Status#
Action Item
Lead
Due Date
Status
WGCV
Propose methodology for updating LandNet list of approved test sites (both removal of non-active sites and inclusion of new sites)
Thome
IVOS-28
CLOSED through RadCalNet Admission Panel
WGCV
Present proposed method for LandNet site update to WGCV plenary
Fox
WGCV 40
WGCV
Provide updated information regarding LandNet to the Cal/Val portal
WGCV week
Open

11. WGCV-39 Action Item Status#
Action Item
Lead
Due Date
Status
WGCV
Draft GSICS/WGCV collaborations based on WGCV-39 Sub-Group presentations provided to GSICS, WGCV, and Sub-Group chairs for
comments
Vice Chair / Chair
July 31, 2015
Open
A. Von Bargen has provided
a proposed linkage to be
forwarded to GSICS and
WGCV members by Thome

12. WGCV-39 Action Item Status#
Action Item
Lead
Due Date
Status
WGCV
Cloud Masking Task work plan including objectives; schedule; and deliverables
Bojkov (EUMETSAT)
WGCV-42
Addressed at WGCV-43
WGCV
Global DEM Task work plan including objectives; schedule; and deliverables
Muller (UCL)
Thome
WGCV
Add cross-reference on the WGCV web page to GMTED2010 for coarse resolution sensor geometric and radiometric calibration
Burini/Bojkov (ESA)
Open
WGCV
Formulate a draft concept for the use of the Cal/Val portal and CEOS web site by WGCV
Chair and Secretariat in cooperation with ESA
June 15, 2015
CLOSED through presentation at WGCV-42

13. WGCV-40 Action Item Status#
Action Item
Lead
Due Date
Status
WGCV
WGCV Chairs will clarify in accordance with the roles and responsibilities in cooperation with OCR-VC and IOCCG [after having received the answer from IOCCG with respect to the IVOS statements]
CEOS WGCV Chair and Vice Chair
WGCV-42
Open
WGCV
An ad-hoc team comprising one member out of the subgroup LPV, IVOS and ACSG and the CEOS WGCV chair shall recap the terminology needed for validation metrics and formulate along the LPV validation metrics a coherent validation metrics for data products applicable in general with the starting point of individual satellite data products. This shall be developed such that the metrics can be extended in a follow-on step to the requirements of time series / climate data records.
CEOS WGCV Chair and LPV, IVOS, AC Subgroup Chairs
WGCV-41

14. WGCV-40 Action Item Status#
Action Item
Lead
Due Date
Status
WGCV
CEOS WGCV secretariat is drafting a WGCV work plan as outlined.
CEOS WGCV and Secretariat
WGCV-41
Pendinng

15. WGCV-41 Action Item Status#
Action Item
Lead
Due Date
Status
WGCV-41-01
CEOS WGCV Chair will contact WGCV members and subgroup Chairs by to solicit information regarding on-going and proposed efforts related to cloud masking studies including definitions, requirements, and methods for cloud masking, and points of contact. The deadline for responses will be two months after the request and responses will be forwarded to the WGCV Cloud Masking Task Group
Chair
15 October 2016
Open

16. WGCV-41 Action Item Status#
Action Item
Lead
Due Date
Status
WGCV-41-02
CEOS WGCV Chair will contact WGCV members and subgroup Chairs by to solicit information regarding on-going and proposed efforts related to DEM studies including definitions, requirements, and methods for DEMs, and points of contact. The deadline for responses will be two months after the request and responses will be forwarded to the WGCV DEM Task Group
Chair
15 October 2016
Will be closed through WGCV

17. WGCV-41 Action Item Status#
Action Item
Lead
Due Date
Status
WGCV-41-03
Interoperability action from IVOS recommendations see IVOS talk
Thome
IVOS 29
Closed as part of CEOS Work Plan item CV-15 R
IVOS shares a vision on the need to establish a community reference for sensor Level 1 TOA interoperability. It will create an umbrella project (in collaboration with appropriate GSICS sub-groups) and set of related sub-projects/activities to achieve that goal.

18. WGCV-41 Action Item Status#
Action Item
Lead
Due Date
Status
WGCV-41-04
All sub-body leads and WGCV members commenting and amending the website concept
All
15 October 2016
CLOSED at WGCV-42
WGCV-41-05
Chair to meet with GSICS-EP vice chair and discuss GSICS workplan in term of collaboration
Chair
End of September 2016
WGCV-41-06
Provided draft list of WGCV action in response to Carbon actions
Vice-Chair
1 December 2016
CLOSED as part of Carbon Actions presentation at WGCV-42

19. WGCV-42 Action Item Status#
Action Item
Lead
Due Date
Status
WGCV-42-01
WGCV Chair (Thome) to work with MRI Leads (Fosnight, Ong, Moreno) to develop clearer guidance for WGCV’s effort in support of MRI
Thome
Open
WGCV-42-02
P. Henry to supply WGCV with background description of SPOT Heritage efforts for orthorectified TOA data to Sentinel 2 grid
Henry

20. WGCV-42 Action Item Status#
Action Item
Lead
Due Date
Status
WGCV-42-03
Feedback from WGCV members regarding methods for producing surface reflectance prior to 2000
Vice-Chair
Open
WGCV
Sub-bodies chairs to provide information to WGCV Secretariat regarding their sub-group’s mission, objectives, membership, and brief overview about the activities. Information will be implemented for each sub-bodies web appearance on the updated WGCV web portal sites within the WGCV web concept 2017
sub-bodies chairs ex LPV & SAR
September 30, 2017

21. WGCV-42 Action Item Status#
Action Item
Lead
Due Date
Status
WGCV-42-05
A list of MTF sites will be submitted to the newly-formed RadCalNet Admission Panel that also serves as approval process for Landnet-related test site approval
IVOS Chair
October 31, 2017
Open
WGCV
WGCV Chair will request RadCalNet Admission Panel to propose a method for providing MTF estimation methodologies to the community
Chair

22. WGCV-42 Action Item Status#
Action Item
Lead
Due Date
Status
WGCV-42-07
RadCalNet Admission Panel Terms of Reference distributed to WGCV membership for approval
Chair
May 31, 2017
Open
WGCV
WGCV informed of RadCalNet Admission panel membership
Chair, IVOS Chair
July 31, 2017
WGCV
Distribute to membership the WGCV-Carbon Action items assigned during WGCV-42 for completion by WGCV-43
June 7, 2017
WGCV-42-10
Distribute to membership the WGCV-CA longer term items for comment
June 14, 2017
WGCV-42-11
Proposed approach to address DEM Task Group goals
WGCV-43