SeaWinds on QuikSCAT Level 3 Daily Gridded 0.25 Degree Browse Images
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DescriptionThis dataset contains images of daily averaged ocean surface wind vectors derived from the gridded Level 3 QuikSCAT ocean surface wind vector dataset. These images are provided in GIF format at 900x600 pixel resolution. Vector arrows are colored according to wind speed, and a color bar is available to estimate the wind speed. The arrow is directionally oriented with the flow direction of the 10 m ocean surface wind velocity retrievals derived from the NASA SeaWinds scatterometer aboard the QuikSCAT satellite platform. For more information on the QuikSCAT platform and mission, please visit . Disclaimer: this dataset is meant for quick-look purposes only and is not intended for science-quality research applications.
Dataset TypeOPEN
MeasurementOCEANS > OCEAN WINDS > SURFACE WINDS > Ocean Surface Wind Vectors
Processing Level3
CoverageRegion: Global
Northernmost Latitude: 89.875 degrees
Southernmost Latitude: -89.875 degrees
Westernmost Longitude: 0 degrees
Easternmost Longitude: 360 degrees
Time Span: 1999-Jul-19 to 2009-Nov-21
ResolutionSpatial Resolution: 0.25 degrees (Latitude) x 0.25 degrees (Longitude)
Temporal Resolution: 1 Day
ProjectionType: Gridded
Detail: Cylindrical
Ellipsoid: WGS 84
Latency hours
Orbit Period: 100.93 minutes
Inclination Angle: 98.6 degrees
Ascending Node: 1999-Jul-19 06:04:49
Name: SeaWinds Scatterometer (SEAWINDS)
Swath Width: 1800 km
Description: SeaWinds is a Ku-band (13.4 GHz) Scatterometer which features a single circular scanning dish antenna to provide pencil-beam measurements, as opposed to the common fan beam design as seen with other spaceborne scatterometers. The pencil-beam design has several key advantages over the more common fan beam design: higher signal-to-noise ratio, smaller size, and superior coverage. The SeaWinds single antenna utilizes twin offset feeds, thus providing two pencil-beam footprint paths with an elliptical sampling footprint of approximately 25 km (in azimuth) by 37 km (in look/range direction); these pencil beams have opposing polarizations (i.e., vertical and horizontal), thus achieving dual-polarization. The SeaWinds instrument provides a full 1800 km-wide swath coverage (including the nadir region), which allows for a nominal daily measurement coverage of 90% over the ice-free oceans.

ProjectQuick Scatterometer (QUIKSCAT)
Data ProviderCreator: SeaPAC
Release Place: PO.DAAC
Release Date: 2006-Sep-09
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Citation SeaPAC. 2006. SeaWinds on QuikSCAT Level 3 Daily Gridded 0.25 Degree Browse Images. Ver. 2. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at

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For more information see Data Citations and Acknowledgments.

Journal Reference Perry, K.L., October, 2001. SeaWinds on QuikSCAT Level 3 Daily, Gridded Ocean Wind Vectors (JPL SeaWinds Project). Version 1.1, JPL Document D-20335, Jet Propulsion Laboratory, Pasadena, CA.