1 / 20

Data Matters from Sessions 8, 9 and 11

WOAP-4 Task Group 1 Contributors: H Cattle, E Kent, J Key, T Koike, C Kummerow, M Manton, K Taylor, C von Savigny, R Vose. Data Matters from Sessions 8, 9 and 11. Issues. Future arrangements for surface fluxes Global datasets Assessment of ECV and related variable datasets

pisces
Download Presentation

Data Matters from Sessions 8, 9 and 11

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. WOAP-4 Task Group 1 Contributors: H Cattle, E Kent, J Key, T Koike, C Kummerow, M Manton, K Taylor, C von Savigny, R Vose Data Matters from Sessions 8, 9 and 11

  2. Issues • Future arrangements for surface fluxes • Global datasets • Assessment of ECV and related variable datasets • Meta-data consistency • Global reference sites • Measurement of solid precipitation • Quantification of uncertainties • TOA radiation budget • Data management

  3. Future arrangements for surface fluxes -Background • Many current activities across WCRP and GCOS programs • Eg WGSF, GEWEX (LandFlux, SeaFlux,...), CliC, US CLIVAR, WGNE, TOPC, SOLAS • Possible overlaps • Eg SeaFlux, US CLIVAR, SOLAS, WGSF • Gaps • See OceanObs09

  4. Future arrangements for surface fluxes -Actions • CLIVAR SSG is requested to develop a strategy for coordinating current activities across WCRP programs and to ensure that significant gaps are addressed • WOAP should consider focusing the proposed assessment workshop on global ocean fluxes (including physical and biogeochemical properties)

  5. Global Datasets - Background • WCRP has addressed need for global datasets through GEWEX and SPARC activities; eg SRB, ISCCP • New GEWEX energetically consistent flux dataset is unique contribution • Error analysis provides uncertainty estimates • Most variables now have multiple global datasets • More than one dataset of a variable allows assessment through inter-comparison; eg structural errors

  6. Global Datasets - Actions • GEWEX and SPARC are encouraged to continue production of key research datasets • WOAP will promote assessment activities involving all groups preparing global datasets of ECVs and related variables

  7. Assessment of ECVs and Related Variables - Background • GCOS noted differences in many global datasets of ECVs; but no 'best' dataset • Established groups for inter-comparison; eg SST/SI • Still have 8 different SI analyses (CliC) • WMO SCOPE-CM involving operational agencies established • ESA CCI established with user forum

  8. Assessment of ECVs and Related Variables - Actions • WOAP should ensure that the research community is involved with international assessment of global datasets • The WMO SCOPE-CM provides a model of the process for international assessment, but a process involving operational and research agencies is needed

  9. Meta-data Consistency – Background • CMIP5 and CEOP have provided frameworks for access to model and observational data • WMO has developed meta-data standards for meteorological data • It will be important to ensure that there is consistency in the treatment of meta-data for weather and climate model data

  10. Meta-data Consistency - Actions • PCMDI is requested to liaise with the WMO task group to optimise the treatment of meta-data for weather and climate purposes

  11. Global Reference Sites - Background • There are many global networks for specific purposes; eg FluxNet, GSN • There are a number of global reference networks for multi-variable observations; eg CEOP, GRUAN, ICOS, BSRN • There are policy and scientific reasons for reference sites to be collocated where feasible

  12. Global Reference Sites - Actions • TOPC is asked to lead a dialogue with CEOP, GRUAN, ICOS, … to develop a strategy to optimise the distribution of multi-variable reference sites (super-sites)

  13. Measurement of Solid Precipitation - Background • A significant fraction of global precipitation falls as snow • New satellite missions are being proposed to measure solid precipitation • In the 1990s WMO CIMO led a project to improve measurement of snow • Some work has commenced to review the status of snow measurement • CliC has a continuing interest in snow measurement

  14. Measurement of Solid Precipitation - Actions • CliC is asked to continue its dialogue with CIMO and other relevant groups to ensure that appropriate activities are being undertaken to improve the measurement of solid precipitation

  15. Quantification of Uncertainties - Background • Uncertainties are now recognised by the the general community as an inherent aspect of model and observed datasets • Much emphasis has been made on reducing the uncertainties • A more appropriate emphasis is on the quantification of uncertainties • This is especially true for datasets, where structural errors are not always recognised

  16. Quantification of Uncertainties - Actions • WOAP encourages all groups to ensure that all model and observed datasets have associated uncertainties quantified

  17. TOA Radiation Budget - Background • Global climate is determined by the TOA radiation budget • There remains an uncertainty of 2 W/m2 in the incoming radiation, which is not scientifically acceptable

  18. TOA Radiation Budget - Actions • GEWEX is requested to investigate the feasibility of improving the accuracy of the TOA radiation budget • If appropriate, JSC should encourage the relevant agencies to take the required actions

  19. WCRP Data Management - Background • WOAP task group on data management has reported on progress in developing a consistent approach to data management across WCRP programs • CEOP and CMIP have provided frameworks for access to global model and observed datasets • Where appropriate, legacy datasets in WCRP need to be discoverable and recognised

  20. WCRP Data Management - Actions • WCRP project offices should ensure that appropriate global data sets are registered in WIGOS and in the WCRP catalogue, in addition to meeting the basic needs for data access • WOAP accepts the offer by CLIVAR IPO to update the web-based catalogue of WCRP datasets • The WOAP task group develop guidelines for data management practices across WCRP, over the next 6 months

More Related