gov.noaa.ncdc:C00245 National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Unknown model http://www.ncdc.noaa.gov Global Spectral Ocean Wave Model is historical digital data set DSI-9797, archived at the National Climatic Data Center (NCDC). The major data variables which make up this file are: beginning of record flag, time information, ocean basin, grid point, sub-projection, wind direction, friction velocity, white caps, wind speed, array position, and wave energy. The data in this file were originally created by the U.S. Navy Fleet Numerical Oceanography Center. The Spectral Ocean Wave Model used at FNOC generates an array of wave frequencies versus directions for each model grid point. Two related files are DSI-9782 (C00064) and DSI-9783 (C00092) which is the same as this file except for the projection starting point and spectral frequency bandwidth and directional resolution. The global spectral wave model (GSOWM) is based on a 2.5 by 2.5 degree latitude/longitude grid beginning at 90 (deg N) and 60 (deg E). This model removes artificial boundaries that were in the other SOWM models. Each grid point contains spectra for 15 frequencies and 24 directions (FORTRAN notation array (15, 24)). Frequencies in order I = 1, 15 are .30834, .20834, .15833, .13333, .11667, .10278, .09167, .08056, .07222, .06667, .06111, .05556, .050, .04444, .03889. Initial direction is 7.5 degrees then clockwise in 15 degree increments. Logical records are blocked into variable length physical records containing no more than 2000 60 bit words. The Global Spectral Wave Model replaced the Northern Hemisphere Spectral Wave Ocean Model (SOWM) on June 23, 1985. After this date only the GSOWM data will be archived. This dataset is stored on DSI-9782 and DSI-9797. To make a wide range of climatic data available to researchers and the public. data set C00245 National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce 19850623 19970131 Ground Condition Complete As Needed -180.0 180.0 90.0 -90.0 ISO 19115 Topic Category climatologyMeteorologyAtmosphere 004 oceans 014 DIF Discipline Keyword Thesaurus Earth Sciences > Atmosphere > Meteorology Earth Sciences > Atmosphere > Climatology Earth Sciences > Atmosphere > Weather Earth Sciences > Ocean > Oceanography GCMD Sciences Keyword Valids EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > WIND-DRIVEN CIRCULATION EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE HEIGHT EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE SPEED/DIRECTION EARTH SCIENCE > OCEANS > OCEAN WINDS > SURFACE WINDS EARTH SCIENCE > OCEANS > OCEAN WAVES > WIND WAVES EARTH SCIENCE > OCEANS > OCEAN WAVES > SEA STATE EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY GCMD Location Valids GLOBAL OCEAN GCMD Location Valids SEA SURFACE 1 None None In theory, the quality of data is better in this file than the previous models. Unknown Completeness information not available. Unknown Unknown THE FORMAT OF THE GSOWM SPECTRA DATA IS AS FOLLOWS: NAME: '.' DEFINITION: Period flags new grid point TYPE: Character display code BITS: 6 NAME: YYMMDH DEFINITION: Year and MMDH for system label TYPE: Character display code BITS: 36 NAME: I DEFINITION: Latitude grid point TYPE: Integer BITS: 9 NAME: J DEFINITION: Longitude grid point TYPE: Integer BITS: 9 NAME: Dir DEFINITION: Wind Direction UNITS: Degrees TYPE: Integer BITS: 9 NAME: U* DEFINITION: Friction velocity (U x 512) UNITS: Knots TYPE: Integer BITS: 15 NAME: WC DEFINITION: White caps UNITS: Percent TYPE: Integer BITS: 6 NAME: Wind speed DEFINITION: Wind speed at 19.5 meters UNITS: Knots Real BITS: 30 NAME: REF AD DEFINITION: Reference address - Ranging from 1 to 360 for the location in the 15 x 24 energy matrix (column major order). NAME: Energy DEFINITION: Energy x 100 and GT 005 UNITS: FT**2 TYPE: Integer BITS: 11 The (I,J) Lat/Lon grid points are ordered starting at (1,1), with the J's changing more rapidly that the I's (row major order), i.e., (1,1), (1,2), (1,3),...(1,70),...(2,1), (2,2), (2,3),...(2,70),...(3,1), (3,2), (3,3),... (3,144), (4,1),..... Records are variable length with a maximum length of 2000 20 bit words. The data for a grid point does not cross record boundaries. None National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Customer Services Branch Mailing and physical

151 Patton Avenue

Room 468

Asheville North Carolina 28801-5001 USA 828-271-4800 828-271-4010 828-271-4876 ncdc.orders@noaa.gov 8:00 - 6:00 Eastern http://www.ncdc.noaa.gov/oa/about/ncdcordering.html DSI-9797 Every effort has been made to ensure that these data are accurate and reliable within the limits of current NOAA quality control procedures. NOAA can only certify that the data provided to its customers is an authentic copy of the records which were accepted for inclusion in NOAA archives. NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. 20060627 20060627 National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Customer Services Branch Mailing and physical

151 Patton Avenue

Room 468

Asheville North Carolina 28801-5001 USA 828-271-4800 828-271-4010 828-271-4876 ncdc.metadata@noaa.gov 8:00 - 6:00 Eastern Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata FGDC-STD-012-2002 http://www.ngdc.noaa.gov/metadata/extensions/local_extensions.html NGDC Extensions to FGDC Metadata http://www.fgdc.gov/standards/projects/FGDC-standards-projects/csdgm_rs_ex/MetadataRemoteSensingExtens.pdf http://www.fgdc.gov/standards/projects/FGDC-standards-projects/csdgm_rs_ex/remote-sensing-metadata Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata, FGDC-STD-012-2002 http://www.eis.noaa.gov/fgdc/fgdcleg.html NOAA Supplemental Information in Description (NOAA legacy extension to FGDC)