Extraction of Sea Ice Parameters from Imagette Data

• Main Authors: Thomas König, Nadja Steiner, Susanne Lehner
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Antarctic; Arctic; The Antarctic; Antarc*; Sea ice
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.20.6165; http://earth.esa.int/pub/ESA_DOC/gothenburg/160koeni.pdf

From raw ERS wavemode data, complex SAR images of size 5km x 10km, so called imagettes, are computed using the BSAR processor, which have full spatial resolution. As ERS collects wavemode data over sea every 200 km along its track as far as the instrument is not switched to imaging mode, some 1200 imagettes are available each day - some 300 in polar regions - giving a relatively dense coverage of the antarctic and arctic sea ice south of latitude 84 degrees north. ENVISAT will be able to collect wavemode data every 100 km. Due to their independence of daylight, weather conditions and remote receiving stations, imagettes are an ideal data set for the observation of the sea ice cover. Several