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The Humidity Sounder for Brazil (HSB) was an instrument launched on NASA's Earth Observing System satellite Aqua launched in May 2002. It was a four-channel passive microwave radiometer, with one channel at 150 GHz and three channels at 183 GHz. It was very similar in design to the AMSU-B instrument, except it lacked the 89 GHz surface sounding channel. It was intended to study profiles of atmospheric water vapor and provide improved input data to the cloud-clearing algorithms in the Unified AIRS Retrieval Suite, but the scan mirror motor failed on February 5, 2003. It worked with the Atmospheric Infrared Sounder and AMSU-A to form the AIRS Sounding Suite. HSB was manufactured by Matra Marconi Space, Limited (MMS), in the United Kingdom under a contract with the Brazilian National Institute for Space Research (INPE). == Instrument characteristics == *Heritage: AMSU-B *Swath: 1650 km *Spatial resolution: 13.5 km horizontal at nadir *Mass: 51 kg *Duty cycle: 100% *Power: 56 W *Data rate: 4.2 kbit/s *Field of View: ± 49.5 degrees cross-track *Instrument Instantaneous Field of View: 1.1 degrees circular Table 1: Radiometric characteristics of the HSB 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Humidity Sounder for Brazil」の詳細全文を読む スポンサード リンク
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