Carbon Actions for WGCV K. . Thome NASA WGCV Plenary # 43 INPE, Sao Jose dos Campos April 10-13, 2018

Near term actions were presented at WGCV-42 These led to closure of the WGCV’s activities on CARBON-08 and show progress on five other Carbon Actions Also were the basis of the Work Plan item CARBON-19 which was then closed (and is to be updated appropriately in the deliverables web site # Description Relevant carbon actions Assignees Due Date WGCV-CA-22 Summarize the current list of WGCV-LPV validated land data products and those to be validated via WGCV-LPV identifying any gaps between LPV and Carbon Task Force report. CARBON-08 CARBON-34 LPV Chair March 31, 2017 CLOSED at WGCV-42

# Description Relevant carbon actions Assignees Due Date WGCV-CA-18 Document WGCV LPV LAI validation framework and protocols as it would relate to Carbon products and provide to SIT as a broader example of validation methodologies and protocols. Documentation will include listing requirements for data quality (or maturity matrix) as a starting point for developing similar requirements for Carbon products as well as guidance for design of an online platform for intercomparison of terrestrial carbon products. Specific emphasis is also placed on new focus areas for land data products to be included in WGCV. CARBON-08 CARBON-09 CARBON-26 CARBON-31 CARBON-32 CARBON-34 LPV Chair March 31, 2017 CLOSED at WGCV-42

Relevant carbon actions Assignees Due Date The third item in the list (WGCV-CA-02) touches several of the Carbon Actions, includes interactions between WGCV and the SEO in order to address, and can be closed prior to the SIT Meeting. The Secretariat working with the incoming WGCV chair will be able to work with the relevant subgroups # Description Relevant carbon actions Assignees Due Date WGCV-CA-02 Work with CEOS SEO to develop an online platform to make available WGCV results of intercomparison of carbon products while ensuring a common set of reference data, methods and output reporting, and allowing data product subsets to be automatically pushed from data catalogues to inventory results of validation/database input against requirements and suggested maturity of products. CARBON-27 CARBON-32 CARBON-34 CARBON-35 WGCV Secretariat March 31, 2017 CLOSED at WGCV-42

2018 CEOS Work Plan related actions Latest version of CEOS Work Plan includes the WGCV Carbon Action related to GHG This maps exactly to WGCV-CA-27 CV-18: Greenhouse gas reference standards for interoperability Q4 2019 Develop list of reference standards for CO2 and CH4 products that are suitable for use in intercomparison of multiple missions WGCV # Description Relevant carbon actions Assignees Due Date WGCV-CA-27 Develop list of reference standards for CO2 and CH4 products that are suitable for intercomparison CARBON-20 Kuze and ACSG chairs WGCV-43

2018 CEOS Work Plan related actions for GHGs WGCV CEOS Work Plan item for GHGs is also related to other WGCV Carbon Actions WGCV-CA-15 Identify sensors providing time series carbon products, especially those part of the AC-VC for providing CO2 and CH4 products. CARBON-05 CARBON-20 ACSG chairs WGCV-43 WGCV-CA-20 Develop protocols for intercomparison of a selected carbon time series data product produced from multiple sensors as a test bed for protocol development for broader range of data products including backward compatibility of reference data CARBON-05 WGCV-CA-25 Validate a selected time series product using protocols developed for intercomparison of the product produced from multiple sensors CARBON-05

2018 CEOS Work Plan related actions Latest CEOS Work Plan includes biomass related items CARB-16 Work Plan item is already being addressed within LPV with close interactions with the NASA and ESA CV-19 is an attempt to help WGCV formalize its efforts on the CARB-16 while also moving concentrating on activities that lead to broader results within WGCV CARB-16: Cal/Val and production of biomass products from CEOS missions Q4 2019 Development of a coordinated cal/val strategy across NASA and ESA biomass missions that rationalizes protocols, data sharing, and the establishment of ground-based carbon super-sites NASA ESA CV-19: Biomass validation protocols Q2 2020 Development of an initial set of guidance for validation of biomass products using near-term missions such as NISAR, GEDI, and BIOMASS WGCV

WGCV Carbon Actions related to the biomass work plan items # Description Relevant carbon actions Assignees Due Date WGCV-CA-05 Identify those CEOS entities and members of carbon user community already supported by WGCV’s development of traceable validation information. CARBON-31 ACSG, LPV, and IVOS Chairs WGCV-43 WGCV-CA-11 Document list of relevant in situ reference data sets and networks for carbon variables covered by WGCV highlighting those sites suitable for automatic subsetting of satellite sensor data CARBON-07 CARBON-09

WGCV Carbon Actions related to the biomass work plan items # Description Relevant carbon actions Assignees Due Date WGCV-CA-23 Identify a list of candidate products to be used for development of protocols/benchmarks for maturity matrix. CARBON-32 WGCV-CA-26 Identify and select a specific Carbon variable as a means to evaluate the suitability of test sites for validating the variable. CARBON-07 WGCV-CA-13 Document process used for current selection of LPV supersite selection (serving for multiple variables) and validation sites specific to single variables for automated subsetting CARBON-32

WGCV Carbon Actions related to the biomass work plan items Develop protocols for selecting variable-specific validation sites and validation super sites CARBON-38 WGCV-CA-06 Provide WGISS with LPV validation framework for advice on adherence to CEOS data protocols of WGCV standardized, documented, traceable validations. CARBON-27 WGCV-CA-09 Recommend approach for coordinating inputs from multiple organizations to develop definitions for products, validation success, etc. that are suitable across the range of WGs and VCs based on the process developed for LAI, where a common definition was accepted by GCOS, GTOS and CEOS. CARBON-14 CARBON-22

Additional actions were assigned at WGCV-42 to lead toward significant progress on the Carbon Strategy Actions while others were those that included collaboration with other CEOS entities # Description Relevant carbon actions Assignees Due Date WGCV-CA-24 Collaborate with WGISS to determine the list of those current data products for which subsets are automatically derived for intercomparison activities CARBON-33 USGS (Stensaas)and NASA (Roman) WGCV-43

# Description Relevant carbon actions Assignees Due Date WGCV-CA-28 Define approaches for intercomparison of satellite products and in situ validation of Carbon products based on current LPV activities related to exercises for LAI, FAPAR and soil moisture. CARBON-22 CARBON-33 LPV vice chair WGCV-43 WGCV-CA-21 Identify key Level 1 and 2 carbon data products, carbon time series products, and ocean carbon-relevant products that are related to WGCV noting their associated WG/VC (if applicable) and assigning the products to the most relevant WGCV Subgroup and noting availability of Level 1 ATBDs for key Level 2 products. Provide the results of study to SIT CARBON-05 CARBON-07 CARBON-14 CARBON-26 CARBON-34 WGCV and IVOS chairs

Longer term Some of the remaining actions include those that are collaborative with other CEOS entities WGCV-CA-04 Identify WGCV representatives to work with WGISS to identify joint Carbon workshop opportunities. CARBON-38 WGCV-CA-10 Determine appropriate methodology for treating validation of ocean-carbon relevant products within WGCV organizational framework. CARBON-14 WGCV-CA-07 Provide SIT with methods to assign digital object identifiers (DOI’s) to intecomparison exercises. CARBON-27 WGCV-CA-03 Identify WGCV representatives to participate in SIT-related carbon meetings. CARBON-38

Longer term Remaining items have broader areas of applicability and includes those have relevance to ARD and interoperability in general # Description Relevant carbon actions Assignees Due Date WGCV-CA-01 Develop list of completed and planned intercomparison excercises relevant to Carbon Plan CARBON-27 WGCV-CA-08 Develop draft recommendation of terminology related to uncertainty measures (e.g. temporal and spatial characterization of uncertainty measures) CARBON-22

# Description Relevant carbon actions Assignees Due Date WGCV-CA-12 Document approach to ensure updating of reference data as time series expand, including collaboration with in situ networks for the validation of carbon variables to ensure temporal continuity and addressing spatial gaps in in-situ networks CARBON-07 WGCV-CA-17 Develop an inventory of existing protocols and definitions for products, validation, and intercomparisons and collate those publications from WGCV members documenting the traceability and protocols of satellite data uncertainty assessment. CARBON-26 CARBON-27

# Description Relevant carbon actions Assignees Due Date WGCV-CA-14 Determine best method to distribute the methodologies and criteria for globally representative site selection documented in the framework of the BELMANIP validation data set for LAI, and recently in a EUMETSAT project (ALBEDOVAL 2) for albedo validation CARBON-32 WGCV-CA-16 Develop list of projects making use of maturity matrix metrics (for example: European Commission CORE-CLIMAX, QA4ECV projects) to identify possible adaptations to Carbon actions.  

# Description Relevant carbon actions Assignees Due Date WGCV-CA-29 Develop draft list of ancillary data dependencies needed to ensure consistency across individual products and variables for datasets relevant to carbon cycle community needs (e.g., land cover, aerosol, cloud, DEM, reanalysis products, etc.) CARBON-26 WGCV-CA-30 Provide list of validation data providers that met each of the LAI required data quality metrics. CARBON-32