Abstract
The accuracy and spatial resolution of ultrahigh-resolution wind products derived from full-resolution ASCAT radar cross-section measurements are determined by the size and shape of the aggregation area. Current high-resolution products (ASCAT-coastal and ASCAT-6.25) are defined on a regular swath grid (size 12.5 and 6.25 km, respectively) and use a circular aggregation area (15 and 7.5 km radius resp.). For ASCAT-6.25, such approach leads to poor radar sampling, causing noise in the retrieved winds, and poor beam overlap, causing geophysical errors. More regular radar sampling and improved beam overlap can be obtained by using a grid that is synchronized with respect to the ASCAT mid-beam full-resolution measurements. This results in a new generation of ASCAT wind products. It is shown that a product on a 5.6 km grid size (on average) with optimized radar sampling compares better to buoys than ASCAT-6.25, but at the cost of an irregular grid and slightly degraded spatial resolution.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
