Towards establishment of the surface flux group.ppt

1、Towards establishment of the surface flux group,General: To meet the scientific requirements of different programmes of WCRP and its co-operation with IGBP programmes (decision of the 23rd JSC Session, Hobart, Australia, 2002), a WCRP Working Group on Surface Fluxes (WGSF) ?Coordinating Committee on

2、 surface fluxes (CCSF)? should be established.,Draft by Ken Denman, Sergey Gulev, Vladimir Ryabinin and Peter Schlosser,JSC-24, Reading UK, 17-22 Mar 2003,WGASF: 1997-2001,Outcomes: Final report “Intercomparison and Validation of Ocean-Atmsophere Flux Fields”, WCRP-112, 2001, 506 pp.Global Flux Fiel

3、ds Catalogue: www.pcmdi.llnl.gov www.sail.msk.ru www.soc.soton.ac.uk WCRP/SCOR Workshop on air-sea fluxes, 20-24 May 2001, Washington DC, Bolger Centre. (See recommendations)Special issue of J.Climate (2003, vol. 16, No. 4) “Intercomparison and validation of ocean-atmosphere flux fields”,TORs for WG

4、SF (as proposed at JSC-23 in Hobart):,to review the requirements of the different WCRP programmes for air-sea fluxes;,to develop communication and co-ordination between the research initiatives of WCRP and IGBP on air sea-fluxes;,to encourage research and operational activities aimed at improving th

5、e knowledge of air-sea fluxes;,to keep the scientific community and the JSC informed of progress achieved through regular reports, World Wide Web, and as necessary, scientific workshops.,Proposed specific objectives of WGSF for the nearest perspective:,ongoing compilation, evaluation and intercompar

6、ison of existing flux data sets, including those of biogeochemical fluxes;further improvement of parameterisations of physical and biogeochemical fluxes, quantification of uncertainties in surface flux products and development of metadata for these products;assessment of model sensitivity to and lim

7、its on predictability from errors associated with surface fluxes and development of objective analysis schemes and data assimilation techniques in support of the coupled system (re-) analysis;development of strategy for merging and combining surface flux data sets to meet the requirements of WCRP an

8、d IGBP;development of the requirements for flux and flux-related observations in co-operation with IGBP, GCOS, GOOS and other relevant activities;interaction with and support to SOLAS;,Co-operation with SOLAS:,Basic approach: Focus on the cross-cutting issues (parameterizations, in-situobservations,

9、 sampling and spatial analysis procedures)No split discuss together all issues, including those primarily important for WCRP and SOLAS onlyTry to account for both WCRP and SOLAS issues consideringall activities of the WG,SOLAS: foci 2,WCRP: CLIVAR, GEWEX,CLIC,WGNE,WGCM,WGSF,Consideration of fluxes o

10、ver the land:,In general, within the framework of WGSF future consideration should be given to the fluxes over the land. This may require some modification of TORs and membership in tentatively 2-3 years. In the initial stage 2-3 years, a close co-operation with the relevant GEWEX panels and WGCM is

11、 recommended.,Membership (to be developed by the chair):,General approach: WCRP (2/3-3/4) + SOLAS (1/4-1/3),WCRP,SOLAS,Working Group Membership,Ex Officio: Peter TaylorJSC and SOLAS: Sergey Gulev (Shirshov IO), Peter Schlosser (Columbia U), Ken Denman (CCCMA), M. T. Zamanian (IRIMO)Membership Expert

12、ise: Radiative fluxes, Climate Models, Buoys, VOS/GLOBAL, Fluxes over Ice/Snow, Precipitation, Satellite Fluxes, Data Assimilation, Data Bases, Waves, Turbulent Fluxes, Gas Transfer,Draft by C. Fairall, Peter Taylor, David Legler,October 10, 2003,Working Group Plans,*Populate the Working Group*Open

13、communications with WCRP constituencyInterested groups designate liaison *Start a WebsiteHandbook on best practices for flux measurementsSelected flux parameterizations (codes)Selected flux data basesLinks to other flux databases*Develop strategies/plans to meet our objectives development of the req

14、uirements for flux and flux-related observations in co-operation with IGBP, GCOS, GOOS and other relevant activities;,October 10, 2003,EXAMPLE: Attended ACSYS/CLIC Meeting Arctic/Antarctic,Recent/Ongoing/Future Flux Projects SHEBAARM North Slope AlaskaSEARCHGreenland EurekaOASIS,October 10, 2003,Immediate Issues,*Assembling the WG*Meeting with SOLASFuture joint symposium on flux parameterizations?*Project SEAFLUX (GEWEX)*Handbook on Flux MeasurementsAir-seaAir-Ice/snow,March 1, 2004,Proposed WG Membership,