Title :
Interpolating satellite derived wind field data using ordinary kriging, with application to the nadir gap
Author :
Inggs, Michael R. ; Lord, Richard T.
Author_Institution :
Radar Remote Sensing Group, Cape Town Univ., Rondebosch, South Africa
Abstract :
Satellite wind sensors are unable to obtain measurements directly below the satellite, creating a “nadir gap” centred on the sub-satellite track. This is true of active sensors such as scatterometers, as well as for microwave radiometers, newly used for this purpose. In addition, sensor coverage in equatorial regions is incomplete. Using processed ERS-1 wind field data, it is shown in the paper that ordinary kriging is an appropriate technique to interpolate this “nadir gap” . Furthermore, wind field data can also be extrapolated away from the swath using this method, thereby effectively yielding better ocean coverage
Keywords :
atmospheric boundary layer; atmospheric techniques; geophysical signal processing; interpolation; microwave measurement; radar signal processing; radiometry; remote sensing by radar; spaceborne radar; wind; ERS-1 wind field data; equatorial regions; microwave radiometers; nadir gap; ocean coverage; ordinary kriging; satellite derived wind field data; scatterometers; sub-satellite track; Antenna measurements; Extraterrestrial measurements; Oceans; Radar measurements; Radar tracking; Radiometers; Satellite broadcasting; Sea measurements; Sea surface; Spaceborne radar;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1995. IGARSS '95. 'Quantitative Remote Sensing for Science and Applications', International
Conference_Location :
Firenze
Print_ISBN :
0-7803-2567-2
DOI :
10.1109/IGARSS.1995.519672