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Earth Science

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    Current meter, anenometer, and thermistor chain in Babine Lake in 1973-1974.

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    Carbon cycle, nutrient and salinity data from several arctic cruises: July and September, 1989 ; 1974 and 1975 to the Beaufort Sea; and in 1977 to the Amundsen Gulf.

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    Deep water renewal study of Nootka Sound

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    Aanderra pressure gauge data were recorded from 1975 to 1982 during the MIZEX West, OCSEAP and FOCI projects. These data are stored on 56 disk files (2.9 MB) at the Pacific Marine Environmental Laboratory in Seattle, Washington. NOAAServer Codes: [L 72 54 -150 -175] ; nodateline

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    IOS component of a multidisciplinary study of Haro Strait.

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    A collaborative study with Canadian, Russian and American partners to study trans-oceanic sections, 1990 to 1993.

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    Good quality nutrient, oxygen, PCO2 data from a cruise along 155W on the Hudson in 1970.

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    Monthly sea ice concentration for Arctic (1901 to 1996) Ocean have been digitized on a standard 1-degree grid (cylindrical projection) to provide a "relatively uniform set of sea ice extent for all longitudes, as a basis for hemispheric scale studies of observed sea ice fluctuations" (Walsh 1978). Arctic grid covers Arctic Ocean and portions of peripheral seas where sea ice occurs during all or part of the year. Potential uses of this data set include statistical analysis of anomalies in different regions, computing regional and hemispheric trends, modeling the high latitude surface energy budget. Data sources are U.S. Fleet Weather Facility, U.S. Navy National Ice Center (formerly Navy/NOAA Joint Ice Center), U.S. Naval Oceanographic Office, Canadian Department of Transport, British Meteorological Office, Danish Meteorological Institute, Norwegian Polar Institute, and Icelandic ice summaries.Data are available via ftp at ftp://sidads.colorado.edu/pub/DATASETS/NOAA/G00799/. Software to select and print grids by date is also available. Data documentation is available at http://nsidc.org/data/docs/noaa/g00799_arctic_southern_sea_ice/index.html.[Reference: Chapman, W.L., and J.E. Walsh. 1991, updated 1996. Arctic and Southern Ocean Sea Ice Concentrations. Boulder, CO: National Snow and Ice Data Center/World Data Center for Glaciology. Digital media.]

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    Satellite Imagery from September, 1997 to present; North America Pacific Coast from Baja California to the arctic.

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    The algorithm used to generate these grids has been validated directly through comparisons with surface observations from the CEAREX experiment and with radiosonde data from Soviet ice stations. Comparisons with other TOVS retrieval algorithms provided further validation. Validation is on-going and information will be updated as appropriate.Gridded Arctic atmospheric and surface parameters north of 60 degrees North from NCAR's NOAA-10 TOVS HIRS and MSU level-1b radiances using "Improved Iteration Inversion Algorithm" (3I, Chedin 1985). Grids are 100 km X 100 km, 1 April 1987 - 31 October 1988, the Pathfinder benchmark period. Daily data are linear averages of all orbits for one day, 00:00:00 GMT to (excluding) 00:00:00 GMT of the following day. Monthly data are linear averages of all orbits from 00:00:00 GMT of day 1 of a month to 00:00:00 GMT of the last day of that month. Monthly averages directly from orbital data, not averaged daily data. Grid uses equal area azimuthal projection centered on North Pole, is a version of the Equal Area SSM/I Earth (EASE) grid under development at NSIDC. Path_P products are in Hierarchical Data Format (HDF version 3.3r3). Data available on 4 mm DAT tape, 8mm cartridges and via FTP. NSIDC maintains on-line documentation for this data set. Users may access the NSIDC DAAC via the World Wide Web at: http://www-nsidc.colorado.edu/NASA/GUIDE References: Chedin, A., N. A. Scott, C. Wahiche and P. Moulinier. 1985. The Improved Initialization Inversion Method: A high resolution physical method for temperature retrievals from satellites of the TIROS-N series. Journal of Climate and Applied Meteorology. 24:128-143. Francis, J. A. 1994. Improvements to TOVS retrievals over sea ice and applications to estimating Arctic energy fluxes. Journal of Geophysical Research. 99(D5):10,395-10,408. Goddard Space Flight Center. 1994. EOSDIS Version 0 Data Product Implementation Guidelines. Draft Version 1.0 (March 1, 1994). GSFC 50-003-04. GSFC. Greenbelt, MD. National Center for Supercomputing Applications. 1993. HDF Calling Interfaces and Utilities. Version 3.22. University of Illinois at Urbana-Champaign. National Center for Supercomputing Applications. 1994. HDF Reference Manual. Version 3.3. University of Illinois at Urbana-Champaign. Schweiger, A. and Francis, J. 1994. TOVS Pathfinder Path-P Gridded Daily and Monthly Arctic Atmospheric Data from TOVS, User's Guide. Draft version 0.1. University of Washington, Seattle.