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Journal for accession number:  0171016
Created on:                    2018-03-05 12:28:47 UTC
By:                            Automated Ingest Agent

Source: These data were submitted for archive to NCEI from the Center for
Satellite Applications and Research (STAR), NOAA, as part of the
oceanographic products from SAR-wind.

Actions: Data were uploaded by STAR to the Data Distribution System (DDS);
NCEI downloaded the data and MD5 fixity information files from the DDS. 
The data files were validated against the MD5 fixity information. An archival
information package (NCEI Accession) was generated and the netCDF and 
GeoTiFF files were copied to the data/0-data/ directory. A sample browse 
graphic for the Sea Surface wind data provided by the producer is copied 
to the about/ directory.

Files:

about/ 
This directory contains files created by NCEI staff, including 'negotiable'
information between NCEI staff and the data provider.

0171016_preview.png -
  Sample of a regional map for Level-2 Sea Surface Wind from SENTINEL-1A data.

data/0-data/
This directory contains the data files as submitted to NCEI, including both
graphics and NetCDF data files.

1. NetCDF data files:
S1X_PCenter_YYYY_MM_DD_HH24_MI_SS_JJJJJJJJJJ_DDD.DD[EW]_DD.DD[NS]_ PP_F#_Model_wind_level2.nc

Where:
S1X=S1A or S1B representing Sentinel-1A or Sentinel-1B respectively
PCenter=is the processing location identifier (variable length); e.g. ESA
YYYY=is the 4 digit year
MM=is the 2 digit month of the year (01-12)
DD=is the 2 digit day of the month (01-31)
HH24=is the 2 digit hour of the day (UTC time 00-23)
MI=is the 2 digit minute of the hour (00 - 59)
SS=is the 2 digit second of the minute (00-59)
JJJJJJJJJJ=is the 10 digit Julian Seconds of the date (1 January 2000 at 00:00 equals 0000000000) Times prior to 2000 will have a leading minus (-) sign
DDD.DD[EW]=is the Longitude in decimal degrees + (East or West)
DD.DD[NS]=is the Latitude in decimal degrees + (North or South)
PP=is the transmit and receive polarization (HH, VV, HV, VH)
F#=Geophysical model function ID used for the conversion where F (a single digit) is frequency and # is a positive number (1 or more digits), which represents which geophysical model function (GMF) was used for the wind retrieval.The default value is 0.
Model=is a string designating the model winds used for direction (="Fixed" if no model directions were used)
wind=Data type
level2= Level-2 derived product
.nc (netCDF file extension)

e.g. S1A_ESA_2015_10_06_00_20_29_0497406029_35.47W_76.28S_HH_C5_GFS05CDF_wind_level2.nc

2. GeoTIFF files:
S1X_PCenter_YYYY_MM_DD_HH24_MI_SS_JJJJJJJJJJ_DDD.DD[EW]_DD.DD[NS]_ PP_F#_Model_wind_level2.tiff -
  Sea Surface wind data set from SENTINEL-1X in GeoTIFF format at a given location.

File naming convention uses "_" as delimiters and the first element is an
abbreviated version of the SAR sensor/satellite. S1X=S1A (for Sentinel-1A) or S1B (for Sentinel-1B); <PCenter>=the name of the 
processing center as included in the original data (e.g. ESA); YYYY_MM_DD=Numeric
Year-Month-Day of center of data acquisition in UTC; HH24_MM_SS=Numeric Hour-Minute-Second
of center of data acquisition in UTC; JJJJJJJJJJ = JULIAN SECONDS of center of data acquisition. 
Seconds are referenced with respect to January 1, 2000 00:00:00 UTC; DDD.DD(EW) = Longitude in 
degrees; DDD.DD(NS) = Latitude in degrees, E or W; PP = HH, VV, HV, or VH polarization; F#=The 
first letter represents the SAR frequency, L-band, C-band, or X-band. The digit(s) (#) represent which
geophysical model function (GMF) was used for the wind retrieval. The default value is 0;
Model=is a string designating the model winds used for direction; wind=Data type; level2=File type; '.tiff' represents 
the file is in GeoTiff format.