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High-top clouds play an efficient part in moisture transport to the Antarctic
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  • Kazue Suzuki,
  • Terumasa Tokunaga,
  • Takashi Yamanouchi,
  • Hideaki Motoyama
Kazue Suzuki
Hosei University

Corresponding Author:[email protected]

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Terumasa Tokunaga
Kyushu Institute of Technology
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Takashi Yamanouchi
National Institute of Polar Research
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Hideaki Motoyama
National Institute of Polar Research
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We verified high-top clouds from satellite imaging that contributed to snow accumulation at Syowa Station, Antarctica, during a blizzard event in 2009. Snow stake data shows that the accumulation recorded in 2009 and 2011 increased during 1993–2012 through the traverse route in East Antarctica. Focusing on 2009 events, the high-top cloud structure in the stitched satellite image was often linked to the atmospheric river (AR) and the values for the high-top cloud area. We found seven new AR events for 2009 with high accumulations and high-top cloud (HTC) areas. After comparing the HTC area to precipitable water and integrated water vapor transport, we determined that the selected cloud images can be used as a parameter for snowfall. This paper introduces a new fusion method for identifying AR using image analysis and in-situ glacial and meteorological data. These HTC clouds are beneficial for predicting the accumulation in the future.