QSCAT_LEVEL_2A_V2_1

PODAAC-QSX25-L2A02

Version 1
  • Abstract
    The SeaWinds on QuikSCAT Level 2A Surface-flagged Sigma-0 in 25km Wind Vector Cells are processed using the pulse Sigma-0 data provided by the Level 1B product. Unlike NSCAT, the expected number of Sigma-0 cells per WVC is not constant, due to the circular scan of the SeaWinds instrument. To minimize the L2A data volume, the Sigma-0 cell data are stored as "lists" for each WVC row, with each list indexed by a "cell_index" array to indicate the cross-track WVC membership of the data. Each cell is then checked for land or ice and flagged accordingly. Attenuation corrections for each Sigma-0 measurement are also provided. Quality Assurance files are also included to verify the quality of the L2A processing. Data are provided in single-orbit files. Special note: QuikSCAT went into a "non-spinning" mode on 22 November 2009. The final rev number in the nominal Operational "spinning" mode is 54296; the "non-spinning" mode of the instrument continued predominantly for the remainder of QuikSCAT operations. There were some brief periods of "spinning" in year 2013, which include the following days and rev numbers (identified in parenthesis): 1) 29 January to 5 February (7909-71011), 2) 14 March (71536-71549), 3) 18 March to 21 March (71590-71634), and 4) 28 March to 31 March (71735-71769).

Data Identification Fields:

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    Data Dates
    Creation
    Last Revision
    Processing Level

    2A

    Quality
    Collection Progress

    Not Provided

Related URLs
    Science Keywords
    • EARTH SCIENCE
    • SPECTRAL/ENGINEERING
    • RADAR
    • SIGMA NAUGHT

Acquisition Information Fields:

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Platforms
  • SPACECRAFT
    QUIKSCAT
    Instruments
    • SEAWINDS

Temporal Information Fields:

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Spatial Information Fields:

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    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL CARTESIAN CARTESIAN
Location Keywords
    • GEOGRAPHIC REGION
    • GLOBAL

Data Centers

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  • SeaWinds Processing and Analysis Center (SeaPAC)
    PROCESSOR

    This data center does not have any addresses listed.

    This data center does not have any contact mechanisms listed.

  • PO.DAAC
    ARCHIVER

    This data center does not have any addresses listed.

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  • Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, N
    ARCHIVER
    Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA

    This data center does not have any addresses listed.

Data Contacts

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  • User
    Technical Contact
    User Services

    Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, N

    This contact does not have any addresses listed.

    This contact does not have any contact mechanisms listed.

Collection Citations Fields:

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