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Characteristics of katabatic winds from Dome A to the coast of Prydz Bay, Antarctica
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Qizhen Sun1, 2, Zhanhai Zhang1, 3, Min Fu2, Chunhua Li2, Ting Qin2, Zhuoming Ding2, Jiechen Zhao2
Haiyang Xuebao | 2021, 43(7) : 125 - 137
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Haiyang Xuebao | 2021, 43(7): 125-137
• Polar sea ice and climate change •
Characteristics of katabatic winds from Dome A to the coast of Prydz Bay, Antarctica
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Qizhen Sun1, 2, Zhanhai Zhang1, 3, Min Fu2, Chunhua Li2, Ting Qin2, Zhuoming Ding2, Jiechen Zhao2
Affiliations
  • 1College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, China
  • 2Key Laboratory of Marine Hazards Forecasting, National Marine Environmental Forecasting Center, Ministry of Natural Resources, Beijing 100081, China
  • 3Polar Research Institute of China, Shanghai 200136, China
Published: 2021-07-25 doi: 10.12284/hyxb2021079
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Using archived data from Chinese Polar Numerical Weather Forecasting System (PNWFS) and America Antarctic Mesoscale Prediction System, the spatial and temporal distribution of katabatic winds and air mass flux from Dome A to the coast of Prydz Bay are analyzed, and basic characteristics of katabatic winds in the region are depicted. It is found that the katabatic winds in this area is strongly affected by the terrain of the Antarctica ice sheet. Steep terrain such as the western side of the Amery Ice Shelf sees stronger katabatic winds than smooth terrain does; and the katabatic winds vary greatly with the season for temporal distribution with stronger winds in winter. Adiabatic warming, which can be found in the area where strong katabatic winds flow, causes increasing of near surface temperature at the Amery Ice Shelf. The maximum katabatic wind speed zone is located at a height of about 100 m to 200 m above the ground. Katabatic winds extents to higher altitudes while surface winds are stronger. The surface air mass flux of the katabatic winds along the coast of the Prydz Bay is extremely uneven in spatial and temporal distribution. Strong katabatic winds in the Amery Ice Shelf are linked to more mesoscale cyclone activities in the Prydz Bay waters. The process of mesoscale cyclones induced by katabatic winds in the Prydz Bay is worthy of attention, thus the mechanism of cyclogenesis forced by katabatic winds needs further notice.

Antarctica  /  katabatic winds  /  atmospheric surface mass flux  /  mesoscale cyclone
Qizhen Sun, Zhanhai Zhang, Min Fu, Chunhua Li, Ting Qin, Zhuoming Ding, Jiechen Zhao. Characteristics of katabatic winds from Dome A to the coast of Prydz Bay, Antarctica[J]. Haiyang Xuebao, 2021 , 43 (7) : 125 -137 . DOI: 10.12284/hyxb2021079
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Article Info
doi: 10.12284/hyxb2021079
  • Receive Date：2020-04-02
  • Online Date：2026-02-26
  • Published：2021-07-25
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  • Received：2020-04-02
  • Revised：2020-04-26
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Affiliations
    1College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, China
    2Key Laboratory of Marine Hazards Forecasting, National Marine Environmental Forecasting Center, Ministry of Natural Resources, Beijing 100081, China
    3Polar Research Institute of China, Shanghai 200136, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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