NCAR Resarch Data Archive logo

QSCAT/NCEP Blended Ocean Winds from Colorado Research Associates (version 5.0)

| DOI: 10.5065/XQYC-1602

Ocean surface wind data are derived from spatial blending of high-resolution satellite data (SeaWinds instrument on the QuikSCAT satellite - QSCAT) and global weather center re-analyses (NCEP), resulting in high temporal and spatial resolution datasets (6-hourly, and 0.5 by 0.5 degree) of u- and v- wind vector components and windstress curl. The global coverage datasets begin in July 1999 and ends in July 2009.

Surface wind component and wind stress curl fields are available in three forms: 1) a product that is the blended wind field output, 2) fields consisting of the NCEP re-analyses spline interpolated to the 0.5 by 0.5 degree grid (i.e. no QSCAT data blended), and 3) a product that is output from an intermediate step in the blending process that consists of the superposition of QSCAT observations on NCEP before blending. This product is useful to identify the satellite data swaths in each composite of 12-hours of QSCAT observations.

CAUTION: This blended wind product was developed for general circulation scale analyses - see these cautionary notes. The blending methodology is summarized in this document.

NOTE: The QSCAT satellite has permanent failed so this data time series has ended.

Temporal Range:
1999-07 to 2009-07-31
Surface Winds Wind Stress
Vertical Levels:
10 m
Temporal Frequencies:
Every 6 hours
Data Types:
Spatial Coverage:
Longitude Range: Westernmost=180W Easternmost=180E
Latitude Range: Southernmost=88S Northernmost=88N Detailed coverage information
Data Contributors:
Northwest Research Associates, Inc.
Milliff, R. F., J. Morzel, D. B. Chelton, and M. H. Freilich, 2004: Wind Stress Curl and Wind Stress Divergence Biases from Rain Effects on QSCAT Surface Wind Retrievals J. Atmos. Ocean. Tech., 21, 1216-1231.

Chin, T. M., R. F. Milliff, and W. G. Large, 1998: Basin-Scale High-Wavenumber Sea Surface Wind Fields from Multiresolution Analysis of Scatterometer Data J. Atmos. Ocean. Technology, 15, 741-763.

Total Volume:
44.68 GB (Entire dataset) Volume details by dataset product
Data Formats:
Binary (see dataset documentation)
Related RDA Datasets:
The SeaWinds QuikSCAT L2B Scatterometer Ocean Winds, Version 3.0
QSCAT (Ku-2001) Ocean Winds Derived by Locally Weighted Regression Interpolation (Version 1e)
NSCAT/NCEP Blended Ocean Winds (Version 1.0)
QSCAT and ADEOS-II / NCEP Blended Ocean Winds (version 1.0)
Cross-Calibrated Multi-Platform Ocean Surface Wind Velocity, 1987 - ongoing
Metadata Record:
Data License:
Citation counts are compiled through information provided by publicly-accessible APIs according to the guidelines developed through the project. If journals do not provide citation information to these publicly-accessible services, then this citation information will not be included in RDA citation counts. Additionally citations that include dataset DOIs are the only types included in these counts, so legacy citations without DOIs, references found in publication acknowledgements, or references to a related publication that describes a dataset will not be included in these counts.