QSCAT_LEVEL_2B_OWV_COMP_12_1

PODAAC-QSX12-L2B01

Version 1
  • Abstract
    This dataset contains the latest reprocessed version 3 of the Level 2B science-quality ocean surface wind vector retrievals from the QuikSCAT scatterometer. The retrievals are provided on a non-uniform grid within the swath at 12.5 km pixel resolution. Higher resolution is achieved through a slice composite technique in which high resolution slice measurements from L1B data are composited into a 12.5 km wind vector cell. Version 3 processing begins with the same L1B (time-ordered backscatter) data as used in the previous processing. Version 3 has several improvements over the previous JPL processing of the QuikSCAT L2B winds: 1) changes to measurement binning, which was done in order to decrease noise and reduce gaps in the 12.5 km L2B wind retrievals, 2) an improved geophysical model function (GMF) to model the effect of wind on backscatter, 3) a neural network approach to correct rain contaminated winds speeds, 4) cross-track dependent wind speed biases were estimated and removed from the wind retrievals. The 12.5 km binning resolution enables users to obtain wind vector retrievals 10 km closer to shore when compared to the 25 km L2B dataset (only available in versions 1 and 2). More details to the processing changes and improvements are noted by Fore et al. (2013): ftp://podaac.jpl.nasa.gov/allData/quikscat/L2B12/docs/fore_et_al_ieee_2013.pdf . Each L2B file corresponds to a specific orbital revolution (rev) number, which begins at the southernmost point of the ascending orbit. This is the official dataset produced by the QuikSCAT Project through the SeaWinds Processing and Analysis Center (SeaPAC). The Version 3 User Guide document is accessible here: ftp://podaac.jpl.nasa.gov/allData/quikscat/L2B12/docs/qscat_l2b_v3_ug_v1_0.pdf . Read software is made available in MATLAB, Python, R, and IDL and is accessible here: ftp://podaac.jpl.nasa.gov/allData/quikscat/L2B12/sw/

Data Identification Fields:

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    Data Dates
    Creation
    Last Revision
    Processing Level

    2

    Quality
    Collection Progress

    Not Provided

Related URLs
    Science Keywords
    • EARTH SCIENCE
    • OCEANS
    • OCEAN WINDS
    • SURFACE WINDS
    • OCEAN SURFACE WIND VECTORS

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

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  • PO.DAAC
    ARCHIVER

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  • European Space Agency
    ARCHIVER

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Data Contacts

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  • ESA User
    Technical Contact
    ESA User Services

    European Space Agency

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Collection Citations Fields:

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