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I-COADS Data and Products

I-COADS Data and Products. Steven J. Worley Scott D. Woodruff Richard W. Reynolds. Topics. Background Status Plans. Background. Three-way collaboration since 1981 Partner organizations and PI’s NOAA/NCDC, (Dick Reynolds, Joe Elms ) NOAA/CDC, (Scott Woodruff)

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I-COADS Data and Products

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  1. I-COADS Data and Products Steven J. Worley Scott D. Woodruff Richard W. Reynolds

  2. Topics • Background • Status • Plans CLIMAR II, I-COADS Data and Products

  3. Background • Three-way collaboration since 1981 • Partner organizations and PI’s • NOAA/NCDC, (Dick Reynolds, Joe Elms) • NOAA/CDC, (Scott Woodruff) • NSF/NCAR, (Steven Worley) • U.S. Government and Academic @ start • Now, International-COADS (I-COADS) CLIMAR II, I-COADS Data and Products

  4. Current Status, Release 2.0 RT Archive 1998-2002 185 Million Observation Records DM Archive 1784-1997 CLIMAR II, I-COADS Data and Products

  5. Current Status, Release 2.0 100K per year, 1854-1885 WWI and WWII CLIMAR II, I-COADS Data and Products

  6. Data Availability • Observations • NCAR • 1784 - 2002 binary formatted archive is online • ASCII format available by online request • Select region • Select time • Select variables • Select quality flags and options • Delayed mode delivery via pull FTP CLIMAR II, I-COADS Data and Products

  7. Data Availability, Observations @ NCAR http://dss.ucar.edu/pub/coads/forms/ CLIMAR II, I-COADS Data and Products

  8. Data Availability • Observations • CDC • Derived from NCEP GTS • 1991-current, online, ASCII • Updated monthly • Only Basic Variables • Primary Usage • Extend I-COADS to near real-time http://www.cdc.noaa.gov/coads/nrt.html CLIMAR II, I-COADS Data and Products

  9. Data Availability • Monthly Statistics • 1°x1°, 1960 - 1997 • 2°x2°, 1800 – 2002 • NCAR • Access equivalent to observations • Full binary format archive is online • ASCII format with subset selection capability • Very popular user interface CLIMAR II, I-COADS Data and Products

  10. Data Availability, MSG @ NCAR http://dss.ucar.edu/pub/coads/forms/ CLIMAR II, I-COADS Data and Products

  11. Data Availability • Monthly Statistics • CDC • I-COADS 1° and 2° netCDF format files • Through 1997 now, to be updated through 2002 • 2° extension based on NCEP GTS • ASCII 1998 - current • NetCDF 1991 - current http://www.cdc.noaa.gov/coads/coads_cdc_netcdf.shtml http://www.cdc.noaa.gov/cdc/data.nmc.marine.html CLIMAR II, I-COADS Data and Products

  12. Data Availability • Monthly Statistics • CDC, Live Access Server (LAS), Public Debut • Interactive interface • Database – CDC I-COADS netCDF archive • To be updated through 2002 soon • visualize • subset variables, choose output file format • compare (difference) data grids http://www.cdc.noaa.gov/coads-las/servlets/dataset CLIMAR II, I-COADS Data and Products

  13. Data Availability, CDC LAS, Constraints Interface CLIMAR II, I-COADS Data and Products

  14. Data Availability, CDC LAS, Output Options Choose Option 2 Graphic NetCDF 2 ASCII 2 Spreadsheet GIS CLIMAR II, I-COADS Data and Products

  15. Data Availability, CDC LAS, 1° 01/1970 SST Median CLIMAR II, I-COADS Data and Products

  16. Data Availability, CDC LAS, 1°, SST Median,Jan.1983 – Jan.1989, Niño – Niña difference CLIMAR II, I-COADS Data and Products

  17. Data Availability • Advanced Products and Analyses • New Adaptive QC trimming • Monthly SST, 2°x2°, 1800-1997 • A few details • Authors: Tom Smith (NCDC) , Xiao-Wei Quan (CDC) • Observational outliers are trimmed according to a reference climatology that varies with the climate signal • See link for other details and publication references • Access from NCAR, binary or ASCII (subsets) http://dss.ucar.edu/pub/coads/forms/msg/msga.form.html CLIMAR II, I-COADS Data and Products

  18. Data Availability, Adaptive QC SST Decembers 1970-1997, 8-2S, 80-88W , Red = Trimmed Observations 30 Original Trimming via fix climate 20 10 0 82-83 97-98 Adaptive Trimming via varying climate 30 20 10 0 CLIMAR II, I-COADS Data and Products

  19. Data Availability • Advanced Products and Analyses • Extended Reconstructed SST and SLP • Authors Tom Smith and Dick Reynolds (NCDC) • Monthly SST, 2°x2°, Global, 1854-2002, continuing • Monthly SLP, 2°x2°, Global, 1854-1997 • Land and Ocean • Access from NCDC, ASCII format http://lwf.ncdc.noaa.gov/oa/climate/research/sst/sst.html http://www.ncdc.noaa.gov/oa/climate/research/slp/index.html CLIMAR II, I-COADS Data and Products

  20. Plans • Transitioning archive to IMMA format • International Marine Meteorological Archive (IMMA) • Why? • IMMA is an ASCII format – easier to use? • Gaining acceptance by WMO – JCOMM Expert Team for Marine Climatology • Encourage I-COADS data contributors to use it • Insures accuracy from data providers • Easier to grow I-COADS • Well documented, and proven successful • Project examples: CLIWOC, RT at NCDC, NCEP GTS CLIMAR II, I-COADS Data and Products

  21. Plans, IMMA Historical data GTS data Special formats Aux. QC info. Core segment – fixed length + Original data attachments • Basic format concepts • Working Principles • Core segment • All commonly used variables • Fixed length ASCII (108 characters) • Alone will be sufficient for most users • Original data attachments • Contains special fields not in Core • Can be used to improve, repair, and recreate Core • Great format for: • an irreplaceable data archive • ensure easy software access (ascii based) http:/www.cdc.noaa.gov/coads/e-doc/imma/ CLIMAR II, I-COADS Data and Products

  22. Plans, Real-time data for I-COADS • Observations from NCDC • Features • Based on NCDC GTS data stream • Web and FTP access • Pilot activation date: September 2004 • Fast access b/c database system • Will include the full historical archive • Preparation so far • Cross-checks NCDC GTS and NCEP GTS streams • show good agreement and mutual accuracy CLIMAR II, I-COADS Data and Products

  23. Plans, Real-time I-COADS data • Steps beyond real-time data provision • Archive two GTS data streams • Compute Monthly Statistics • Generate @ CDC • Lag time ~ 1 month • Benefit: • More complete records • Standard QC • Standard format • Currently not high priority CLIMAR II, I-COADS Data and Products

  24. Plans, Future data Inclusions • Details given by Scott Woodruff in a presentation for 150th Celebration • Light overview here CLIMAR II, I-COADS Data and Products

  25. Polish Baltic: 1961- 90; 360K Arctic Drift Stations: 1952-76 US Navy Hourly: 1952-64; 3M UK Marine Data Bank: 1950-79 Japanese Whaling Data: 1946-84; 30K Japanese Kobe (2003 ed.): 1889-1940; 3.2M U.S. Meteorological Journals: 1878-94;1.8M Arctic Norwegian Data: 1867-1912; 125K Fully digitized components to be added to I-COADS CLIMAR II, I-COADS Data and Products

  26. Ukrainian Hydrometeorological: 1958-85 Russian R/V Marine: 1936-2002; 4-6M US Lightship Data: 1891- recent German Data: 1887-90; 30K CLIWOC: 1750-1850; 300K Partly digitized components to be added to I-COADS CLIMAR II, I-COADS Data and Products

  27. German Maury Collection: 1845-67; 500-750K Undigitized component to be added to I-COADS CLIMAR II, I-COADS Data and Products

  28. Plans, Future data Inclusions • Early access to new data sources • Availability before merge into I-COADS • Termed “add on” dataset • Features • Data are subjected to climate trimming • In an I-COADS format • Unique and important data • E.g. Kobe Observatory and CLIWOC data • From NCAR http://dss.ucar.edu/datasets/ds530.0/ CLIMAR II, I-COADS Data and Products

  29. Plans, Web Status and Developments • New “Data and Metadata Page” • New look • Organized by data products • Eliminated the CDC/NCAR/NCDC structure • I-COADS metadata • Software and documentation • Graphics and figures to show I-COADS inventories • Ship metadata – Pub47 (1973-1999) • Most products mentioned here are linked to this page. http://www.cdc.noaa.gov/coads/products.html CLIMAR II, I-COADS Data and Products

  30. Plans, Web Status and Developments • “Related Data and Resources” • Links to Projects and Organizations • VOSCLIM • CLIWOC • JCOMM • Links to Associated Data • JISAO Climatologies (Mitchell UW) • 1° global • Extended Reconstructed Analyses (NCDC) Grow this area, link more projects and data http://www.cdc.noaa.gov/coads/related.html CLIMAR II, I-COADS Data and Products

  31. Conclusions I-COADS is international 1998-2002 update available now Many access points and formats New analyses are available New format (IMMA) will be future standard I-COADS real-time observations – coming next year CLIMAR II, I-COADS Data and Products

  32. Thanks! CLIMAR II, I-COADS Data and Products

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