1 / 15

The Marine Climatological Summaries Scheme (MCSS) & the Expert Team on Marine Climatology (ETMC )

The Marine Climatological Summaries Scheme (MCSS) & the Expert Team on Marine Climatology (ETMC ). Two underlying questions…. Scott Woodruff and Elizabeth Kent NOAA Earth System Research Laboratory National Oceanography Centre, Southampton. SOT-IV Geneva, 16-21 April 2007.

nevin
Télécharger la présentation

The Marine Climatological Summaries Scheme (MCSS) & the Expert Team on Marine Climatology (ETMC )

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. The Marine Climatological Summaries Scheme (MCSS)& the Expert Team on Marine Climatology (ETMC) Two underlying questions… Scott Woodruff and Elizabeth Kent NOAA Earth System Research Laboratory National Oceanography Centre, Southampton SOT-IV Geneva, 16-21 April 2007

  2. Q1: Role of DM VOS data? • Often-overlooked benefits by VOS to GCOS for Essential Climate Variables • Complex issues largely impact GTS flow: • RT provision of metadata (META-T) • Call sign masking • WIS and BUFR/CREX • Possible more divergent approach for future: • RT/GTS data more for NWP • DM data more for climate-quality products

  3. Q2: Role of ICOADS?International Comprehensive Ocean-Atmosphere Data Set • Current period of record: 1784-2005 • VOS data (and metadata) plus: • Drifting and moored buoys • Near-surface oceanographic profile “SST” • Proposed enhanced/new linkages to JCOMM • International Maritime Meteorological Archive (IMMA) format • Internationalization of some tasks?

  4. ETMC Background • Major past focus: MCSS (c. 1964) -- components: • Delayed-mode VOS data management (IMMT, MQCS, etc.) • MCSS Summaries (MCS): tabular/graphical summaries • ETMC-II: 26-27 March -- selected recommendations: • SOT TT on eLogbooks [rev. here at SOT] • Documentation for calculations of DPT/etc. • Importance of AWS reports plus visual obs. • Concerns about impacts of ship ID masking • ID should not be masked in DM data

  5. 2 New Task Teams (TT) • Delayed-Mode VOS (TT-DMVOS) data mgmt. • Established by DMCG, cross-cutting with OPA/SOT • Reinvent data flow (GCCs, IMMT, MQCS) • Explore convergences/streamlining • Marine and Oceanographic Climatological Summaries (TT-MOCS) • Proposed by ETMC-II • Resolve future of the MCS

  6. MCS Decadal SummariesMandated by Manual/Guide to Marine Met. Servicesproduced irregularly/not by some RMs AT (nobs, mean, SD) 1991-2000

  7. TT-MOCS • WG to draft TOR (August 2007) • Cross-cutting with SPA (ETWS and ETSI) • JCOMM-II (2005): Urged ETMC to examine how marine, oceanographic, and ice climatologies could be “coordinated so as to been seen as an integrated product.” • QC linkages (MQCS, satellite data for in situ) • Related: Scoping document on ship QC • Tasked by DMCG-II (2006) • Commonalities: VOS, GOSUD, SAMOS

  8. TT-DMVOS • Major task areas: • Streamline data flow -- including GCCs • Manage and update IMMT and MQCS • Explore possible convergences: • IMMT and IMMA formats • IMMA includes features suggested for IMMT-IV • E.g.: Higher-res. of lat/lon and wind speed • ICOADS (note: IMMT data not blended >1997) • Delayed-mode vs. GTS • GOSUD,SAMOS

  9. Structure & Reporting • Proposed membership • ETMC: GCCs as two Co-chairpersons • Plus RMs on ETMC, etc. • SOT (its Chair + VOSPanel Chair) • US NOAA/NCDC member also planned • Reporting mechanisms • Project plan for next 3 years (Aug. 2007) • Reporting to ETMC and SOT + website

  10. IMMA format:Key Format Design Requirements • Simplicity: Members process/manipulate • Use ASCII and eliminate complex encodings • e.g., numeric mixed with “+”, “/” • Flexibility & extensibility (e.g., historical) • Abbreviated (“core”) record type useful • BUFR physical format not appropriate • Consider convergence w/ BUFR tables

  11. ICOADS recent data/metadata mixDelayed-mode (DM) v. RT GTS data in IMMA > GTS drifter reports consolidated in DM WMO Pub. 47 1973- (upcoming: 1955-72)

  12. IMMA record types core (core + optional attms…) core icoads immt meta Key for archival: attm of complete original (suppl.) data: core . . . suppl. Experience has demonstrated that format translations frequently: • contain small (or large) errors • or are incomplete

  13. E.g.: NCEP wind speed, 2006BUFR vs. FM 13 grey: BUFR - kts / 1.9425 (NCEP, GEMPAK) blue: BUFR - kts / 1.943844 (ICOADS, Int. Nautical Mile)

  14. BUFR: Requirements for marine climatology (from ETMC-II) • Need for certified en- and de-coders (action, CBS) • Access to the originally reported data is critical: • NCEP practice: attach FM 13 (FM 18) to BUFR • non-SI units required for consistency • wind speed in kts and cloud cover in oktas • Establish unique “tracking” identifiers for VOS reports • BUFR reports need to be more carefully validated • General requirements first; detailed templates later? • JCOMM -- CBS interaction on this sooner vs. later?

  15. CLIMAR-III JCOMM Workshop on Advances in Marine Climatology 6-9 May 2008, Gdansk/Sopot/Gdynia, Poland Local and Scientific Organizing Committees: initiated Updating: ‘Dynamic Part’ of the Guide to the Appl. MC Broadened JCOMM involvement: from OPA & SPA Possible new sessions: climate indices, sea state + ice

More Related