NSCAT Standard Products Definition

LevelContentsFormatUnitFile SizeComments
1.5' Sigma-0 Beam Product;
sigma-0 cell data organized by beam with quality and surface flags. 		native1 rev20 MB
1.7 Sigma-0 Wind Vector Cell Product;
earth located, sigma-0 cells in subtrack wind vector cells (50km x 50km) with quality flags. 		HDF1 revMax: 12.7 MB
Nominal: 0.85 MB
2 Wind Vector Product;
Multiple ocean wind vector retrieved from sigma-0 data using the Geophysical Model Function with sigma-0 quality flags. 		HDF1 revMax: 1.2 MB
Nominal: 0.85 MB
3 Wind map product;
spatially and daily averaged ocean wind vector mapped into global grid (0.5 x0.5 degrees). 		HDF1 UTC dayMax: 4.1 MB

NSCAT Standard Products Delivery Plan (From JPL to EOC)

SourcePO.DAAC
Delivery StartAfter completion of instrument calibration (L+4M)
Delivery Frequencyonce a week
Media8 mm tape (1 tape/week)
Recording Formattar
Delivery Delay5 weeks
= 2 weeks (Level 0 preparation, EOC) + 3 days (delivery EOC to JPL) + 2 weeks (level processing, JPL) + 3 days (delivery JPL to EOC)
Algorithm Version-up & Reprocessing Phase 0: Instrument Checkout (L to L+1M)
Limited instrument science data will be available.

Phase 1: Instrument Calibration (L+1M to L+4M)
Completion of instrument calibration.

Phase 2: Geophysical Validation (L+4M to L+16M)
Completion of geophysical validation. Reprocessing of all science data from Phase 1 with updated instrument calibration parameters.

Phase 3: Routine Operations (L+16M to EOM)
Reprocess all science data from Phase 1 and 2 with updated geophysical model function, if necessary.

In the event of reprocessing, the PO. DAAC will package and deliver the reprocessed data as new Standard Products and Level 1.5. The CTLG will be updated to list the latest version of the Standard Products for a data week. The previous CTLG entry for a data week will be overwritten.

Cal/Val Plan
Comments Data during the Cal/Val period for NSCAT will be unsuitable for scientific publication. The authorization to distribute Cal/Val period data to EOC will depend on the Science Team Cal/Val procedures and participation by Japanese Science Team members.

After routine processing operations begin, for the life of the ADEOS Mission (3 years primary plus 2 years extended), the PO.DAAC will maintain all level 2 and 3 data and the latest 4 batches of level 1.7 data on the PO.DAAC FTP site. All data on the FTP site will be in HDF (level 1.5 will never be on the FTP site). During periods of reprocessing the FTP site population may be unpredictable. The nominal plan will be to replace original data products with reprocessed data products.

Reference :

  1. Level 1.7 Data Software Interface Specification (SIS-2) -HDF Version, JPL D-12059, Nov.1994.
  2. Level 2 Data Software Interface Specification (SIS-2) -HDF Version, JPL D-12060, Nov.1994.
  3. Level 3 Data Software Interface Specificatiton (SIS-2) -HDF Version, JPL D-120611, Nov.1994.
  4. NSCAT/ADEOS OCL No.ND95-46, JPL, Nov.7, 1995.
Doc No: NCX-000111
ADEOS Sensor Product Delivery Plan
Version : 2.0 		Revision :
Date : May 1996
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