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COAPS QuikSCAT Global Daily Pseudo-Stress Vectors using Variational Method with Generalized Cross Validation


Daily fields of pseudo-stress are produced using a variational approach (direct minimization) with tuning parameters determined using Generalized Cross-Validation (GCV). These products are on a 1x1° grid. The scatterometer winds, and these gridded winds, are calibrated to a height of 10 m. This approach utilizes the only QuikSCAT observations filtered by the NOF rain flag and should be considered as a research quality data set.

The technique used to make these fields is based on the method of Pegion, P. J., M. A. Bourassa, D. M. Legler, and J. J. O'Brien, 2000: Objectively-derived daily "winds" from satellite scatterometer data. Mon. Wea. Rev., 128, 3150-3168.

From this interface, you can download individual files, files grouped by month, or the entire collection of gridded QuikSCAT data produced here at COAPS; each for a particular 6-hour period, set of periods, or all.

These files are in NetCDF format, which can be obtained from UNIDATA.

Routines to read the NetCDF formatted files can be found here.


Select to download either a set of files, or a single file.

Set of files Single file

Download entire dataset, or just selected months as a convenient tar file: (You must select times (GMT) of day.)

Entire Dataset (3234.92 mb)
Jul 1999 (11717.75 kb)
Aug 1999 (30271.62 kb)
Sep 1999 (29295.59 kb)
Oct 1999 (30271.43 kb)
Nov 1999 (29293.66 kb)
Dec 1999 (30268.85 kb)
Jan 2000 (30269.23 kb)
Feb 2000 (28316.54 kb)
Mar 2000 (30268.35 kb)
Apr 2000 (29292.20 kb)
May 2000 (30267.87 kb)
Jun 2000 (29292.48 kb)
Jul 2000 (30268.77 kb)
Aug 2000 (30268.88 kb)
Sep 2000 (29292.55 kb)
Oct 2000 (30269.50 kb)
Nov 2000 (29292.76 kb)
Dec 2000 (30269.16 kb)
Jan 2001 (30271.98 kb)
Feb 2001 (27342.88 kb)
Mar 2001 (30271.98 kb)
Apr 2001 (29295.47 kb)
May 2001 (30271.50 kb)
Jun 2001 (29295.47 kb)
Jul 2001 (30271.98 kb)
Aug 2001 (30271.98 kb)
Sep 2001 (29295.94 kb)
Oct 2001 (30271.98 kb)
Nov 2001 (29295.91 kb)
Dec 2001 (30272.11 kb)
Jan 2002 (30271.62 kb)
Feb 2002 (27342.88 kb)
Mar 2002 (30271.98 kb)
Apr 2002 (29295.39 kb)
May 2002 (30271.10 kb)
Jun 2002 (29295.47 kb)
Jul 2002 (30271.98 kb)
Aug 2002 (30272.07 kb)
Sep 2002 (29296.29 kb)
Oct 2002 (30272.07 kb)
Nov 2002 (27099.17 kb)
Dec 2002 (30272.86 kb)
Jan 2003 (30272.05 kb)
Feb 2003 (27343.18 kb)
Mar 2003 (30272.05 kb)
Apr 2003 (29295.40 kb)
May 2003 (30271.10 kb)
Jun 2003 (29295.47 kb)
Jul 2003 (30271.98 kb)
Aug 2003 (30272.05 kb)
Sep 2003 (29296.32 kb)
Oct 2003 (30272.07 kb)
Nov 2003 (29296.27 kb)
Dec 2003 (28075.62 kb)
Jan 2004 (30272.11 kb)
Feb 2004 (28563.99 kb)
Mar 2004 (30271.98 kb)
Apr 2004 (29295.36 kb)
May 2004 (30271.16 kb)
Jun 2004 (29295.47 kb)
Jul 2004 (30272.02 kb)
Aug 2004 (30272.08 kb)
Sep 2004 (29296.32 kb)
Oct 2004 (30272.07 kb)
Nov 2004 (29296.41 kb)
Dec 2004 (29540.54 kb)
Jan 2005 (30272.13 kb)
Feb 2005 (27343.12 kb)
Mar 2005 (30271.99 kb)
Apr 2005 (29295.39 kb)
May 2005 (30271.25 kb)
Jun 2005 (29295.55 kb)
Jul 2005 (30271.98 kb)
Aug 2005 (30272.16 kb)
Sep 2005 (29296.29 kb)
Oct 2005 (30272.10 kb)
Nov 2005 (29296.41 kb)
Dec 2005 (30272.88 kb)
Jan 2006 (30272.07 kb)
Feb 2006 (27343.23 kb)
Mar 2006 (30271.98 kb)
Apr 2006 (29295.34 kb)
May 2006 (30271.14 kb)
Jun 2006 (29295.47 kb)
Jul 2006 (26610.05 kb)
Aug 2006 (29783.84 kb)
Sep 2006 (29296.26 kb)
Oct 2006 (30272.07 kb)
Nov 2006 (29296.41 kb)
Dec 2006 (30272.80 kb)
Jan 2007 (30272.08 kb)
Feb 2007 (27099.08 kb)
Mar 2007 (26610.05 kb)
Apr 2007 (29295.39 kb)
May 2007 (30271.10 kb)
Jun 2007 (29295.47 kb)
Jul 2007 (30271.98 kb)
Aug 2007 (30272.10 kb)
Sep 2007 (29296.32 kb)
Oct 2007 (30272.07 kb)
Nov 2007 (29296.41 kb)
Dec 2007 (30028.70 kb)
Jan 2008 (30272.07 kb)
Feb 2008 (28319.78 kb)
Mar 2008 (30271.98 kb)
Apr 2008 (29295.39 kb)
May 2008 (29782.86 kb)
Jun 2008 (29295.47 kb)
Jul 2008 (30271.98 kb)
Aug 2008 (29783.80 kb)
Sep 2008 (29296.32 kb)
Oct 2008 (30272.13 kb)
Nov 2008 (14404.07 kb)
Select times (GMT) of day: [00] [06] [12] [18] [all]

Please select one of the following options (compression is highly recommended):

tar'd file
gzip'd tar file
compress'd tar file

Download an individual uncompressed file: (Only available for dates listed left.)


Year: Month: Day: Hour:


http://www.coaps.fsu.edu/scatterometry/index.shtml http://www.coaps.fsu.edu/lib/biblio/scatterometry/ http://www.coaps.fsu.edu/ NSCAT Background QuickSCAT Background http://www.coaps.fsu.edu/scatterometry/Nscat/animations.shtml http://www.coaps.fsu.edu/qscat/anim/ http://www.coaps.fsu.edu/scatterometry/Nscat/still_images.shtml science applications links http://www.coaps.fsu.edu/scatterometry/Nscat/sci_appl.shtml http://www.coaps.fsu.edu/scatterometry/Nscat/swaths.shtml http://www.coaps.fsu.edu/~bourassa/QSCAT_CV/swaths.shtml http://www.coaps.fsu.edu/scatterometry/Nscat/gridded.shtml http://www.coaps.fsu.edu/~bourassa/QSCAT_CV/gridded.shtml http://www.coaps.fsu.edu/~bourassa/scat_html/NSCAT_CV/data_sets.shtml qscat cal/val
Last modified 17 July 2000
Feedback - Dr. Mark Bourassa