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AVHRR CoastWatch Alaska Regional Node Data, April 1991-March 2004
The sea surface temperature (SST) products were derived from NOAA's Polar-orbiting Operational Environmental Satellites (POES) for the coastal United States and created by NOAA CoastWatch Program. CoastWatch started with only POES/AVHRR SST data for the East Coast, but later added more regional nodes of Alaska, Caribbean, Gulf of Mexico, Hawaii, Great Lakes, Northeast, Southeast and West Coast. The products provided here are in the original CoastWatch Format, which does not apply to the SST data currently created. The new data is now provided in HDF format.
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AVHRR CoastWatch Regional Data, November 2003 - present
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The mapped data derived from AVHRR (Advanced High Resolution Radiometer) onboard NOAA and Metop satellites is divided into files for CoastWatch regions of interest. Each file contains multiple data variables stored using the HDF-4 Scientific Data Sets (SDS) model. The product contents are channel 1 albedo, channel 2 albedo, channel 3a albedo, channel 3 brightness temperature, channel 4 brightness temperature, channel 5 brightness temperature, moisture corrected sea-surface-temperature, 8-bit CLAVR ocean cloud mask, 2-bit CLAVR-X cloud mask, satellite zenith angle, solar zenith angle, relative azimuth angle and 8-bit graphics layers. The pixel resolution is 1.47 km/pixel except for synoptic region in Alaska (5 km/pixel) and the Great Lakes (1.8 km/pixel).
46085 (LLNR 984.15) - CENTRAL GULF OF ALASKA - 265NM West of Cape Ommaney, AK
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Timeseries data from '46085 (LLNR 984.15) - CENTRAL GULF OF ALASKA - 265NM West of Cape Ommaney, AK' (gov-ndbc-46085)
l1081na.m77t - MGD77 data file for Geophysical data from field activity L-10-81-AA in North Aleutians, Alaska from 08/16/1981 to 08/23/1981
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Single-beam bathymetry data along with DGPS navigation data was collected as part of field activity L-10-81-AA in North Aleutians, Alaska from 08/16/1981 to 08/23/1981, The geophysical source was a Knudsen 12 kHz 320B/R echosounder. These data are reformatted from space-delimited ASCII text files located in the Coastal and Marine Geology Program (CMGP) InfoBank field activity catalog at http://walrus.wr.usgs.gov/infobank/l/l1081aa/html/l-10-81-aa.bath.html into MGD77T format provided by the NOAA's National Geophysical Data Center(NGDC). The MGD77T format includes a header (documentation) file (.h77t) and a data file (.m77t). More information regarding this format can be found in the publication listed in the Cross_reference section of this metadata file.
Water temperature, salinity, and others taken by trawl-mounted CTD from chartered fishing vessels Alaska Provider and Ocean Explorer during the 2022 and 2024 Alaska Fisheries Science Center Aleutian Islands Biennial Summer Bottom Trawl Surveys (NCEI Accession 0286095)
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This dataset contains data taken by trawl-mounted CTD in Aleutian Islands area. CTD water column profile and bottom data were collected during the 2022 and 2024 Aleutian Islands summer bottom trawl surveys conducted by the NOAA Fisheries/Alaska Fisheries Science Center/Resource Assessment and Conservation Engineering Division/Groundfish Assessment Program. Data include temperature, salinity, density, depth, pressure, sound speed, and buoyancy frequency. The data files are in netCDF format.
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