Deriving long-term time series of sea ice cover from satellite passive-microwave multisensor data sets

摘要: We have generated consistent sea ice extent and area data records spanning 18.2 years from passive-microwave radiances obtained with the Nimbus 7 scanning multichannel microwave radiometer Defense Meteorological Satellite Program F8, F11, F13 special sensor microwave/imagers. The goal in creation of these was to produce a long-term, set extents areas that provides means for reliably determining variability over 18.2-year period also serves as baseline future measurements. describe method used match four sensors summarize problems encountered when working having different frequencies, footprint sizes, visit times, calibrations. A major obstacle adjusting differences is lack complete year overlapping sequential sensors. Nonetheless, our procedure reduced during periods overlap less than 0.05% 0.6% or less.