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Description of holdings on the general AMRC CD-ROM archive. 

All data is filed in Julian Day (YYDDD) subdiredctories, where
YY is the last two digits of the year, and DDD is the day of the year.

All data is compressed using Unix compress, except all *.GIF and *.TXT
files.


Composites (McIDAS AREA format files)
----------

AREA000n = Antarctic Infrared Composites (where n = 1 through 8, 
           and 1 = 0 UTC,2 = 3 UTC, etc.)

AREA001n = Antarctic Water Vapor Composites (where n = 1 through 8, 
           and 1 = 0 UTC,2 = 3 UTC, etc.)

AREA002n = Antarctic "Psuedo-Color" Composites (where n = 1 through 8,
           and 1 = 0 UTC,2 = 3 UTC, etc.)

AREA100n = Arctic Infrared Composites (where n = 1 through 8, 
           and 1 = 0 UTC,2 = 3 UTC, etc. Many missing observation
           times..experimental)


Observations (McIDAS MD format files, yddd = y is Last digit of year,
------------   ddd is day of the year)

ABOMyddd = Australian Bureau of Meteorology Synoptic data

AMANyddd = Australian Bureau of Meteorology Manditory level 
           Radiosonde data

ASIGyddd = Australian Bureau of Meteorology Significant level
           Radiosonde data (likely empty)

AWSyddd  = UW AWS data, decoded from TeraScan AWS Text files
           (treat as suspect, soon to be discontinued)

GAWSyddd = UW AWS data, decoded from SDI/Jthom's decode system
           from Gilmore Creek, AK Ground Station GAC data recieved
           at SSEC

MANDyddd = Manditory level Radiosonde data from SSEC Data Center

MAWSyddd = UW AWS data, decoded from SDI/Jthom's decode system
           from McMurdo Station Ground Station HRPT data recieved
           at McMurdo.

METRyddd = METAR surface observation data from SSEC Data Center

PIRPyddd = PIREP/AIREP reports from SSEC Data Center (no/little data
            near/over Antarctica so far)

SHIPyddd = Ship and Bouy Observations from SSEc Data Center

SIGyddd  = Significant level Radiosonde data from SSEC Data Center 
           (likely no data over Antarctica?)

SYNyddd  = Synoptic surface observation data from SSEC data Center

WAWSyddd = UW AWS data, decoded from SDI/Jthom's decode system
           from Wallops Island, VA Ground Station GAC data recieved
           at SSEC


Model Data (McIDAS GRID format files, yddd = y is Last digit of year,
----------   ddd is day of the year)


ECMWyddd = ECMWF model gridded analysis and forecast model output

MRFyddd  = NCEP's MRF model gridded analysis and forecast model output

GFSyddd  = NCEP's GFS model gridded analysis and forecast model output

ICEyddd  = NCEP's ice concentration gridded analysis output

SSTyddd  = NCEP's Sea Surface Temperature  gridded analysis output

UKMTyddd = UK Met Office forecast model output

WWFMyddd = NCEP's WWFM forecast model, UK Met Office analysis, maybe an
           SST analysis from NCEP


Text Data (raw ASCII Text reports from GTS, ccyyddd = ccyy is full year
---------  and ddd is day of the year)

FTccyyddd.TXT   = Terminal Aerodrome Forecasts from McMurdo for
                  air fields around McMurdo and maybe South Pole.

NZCMccyyddd.TXT = METAR observations from McMurdo air fields and
                  South Pole.

NZWDccyyddd.TXT = METAR observations from Williams Field

NZIRccyyddd.TXT = METAR observations from Ice Runway

NZPGccyyddd.TXT = METAR observations from Pegasus

NZSPccyyddd.TXT = METAR observations from South Pole

ARPccyyddd.TXT = AIREPs from the US Antarctic Program, South of 60 South

NZARPccyyddd.TXT = AIREPs from the New Zealand region airspace in the South-
                   eastern hemisphere.

Navigation Data (McIDAS NOAA or POES System Navigation data)
---------------

SYSNAV1 = Year to date system navigation for NOAA satellite series