Scatterometry Logo Scatterometry Text
Download
1° Temporally Averaged Winds

Daily wind fields are produced using a heavily weighted temporal average. These products are on a 1° grid, for each day scatterometer observations were available over part of the globe. The scatterometer winds, and these gridded winds, are calibrated to a height of 10 m. This approach bins the satellite swath observations (in 1° bins) without any additional smoothing in space. The data set should be considered research quality.

The effective sampling time is non-homogeneous in space and time, but is typically between one and three days, with a peak at two days. A characteristic averaging time can be estimated by applying the averaging technique to the absolute value of the difference in time between each observation an d 12Z on the day to which the wind field applies. This characteristic time is roughly half the effective sampling period. The probability distribution of this characteristic time (for the region around the Gulf of Mexico and the Caribbean Sea) shows the effectiveness of this averaging technique. Data sets with homogeneous sampling characteristics require much larger spatial and temporal bins for averaging. This technique captures relatively rapid and small scale changes that might othe rwise be missed. The effectiveness of this technique can be seen in animations showing gap flow through Mexico's Isthmus of Tehuantepec.

NetCDF libraries are required to access the data, and can be obtained from UNIDATA.

 Select the download method you prefer

 Date Ranges Available: September 15, 1996 - June 29, 1997

Entire dataset
Compressed dataset of all files
Note: If this download method is selected, a download link will be e-mailed to you due to the large size of the dataset
Compression Options
E-Mail Address
Single Year
Compressed set of select files
Note: If this download method is selected, a download link will be e-mailed to you due to the large size of the dataset
Year
Compression Options
E-Mail Address
Single Month
Compressed set of select files
Note: If this download method is selected, a download link will be e-mailed to you due to the large size of the dataset
Year
Month
Compression Options
E-Mail Address
Daily File
Individual uncompressed file
YearMonthDayHour