Advanced Search
BAI Hanbing, ZENG Gang. 2022. Comparison of Cold Surges across North China between the 1990s and the 2000s and Their Relationships with Arctic Sea Ice [J]. Climatic and Environmental Research (in Chinese), 27 (3): 368−382. doi: 10.3878/j.issn.1006-9585.2021.21036
Citation: BAI Hanbing, ZENG Gang. 2022. Comparison of Cold Surges across North China between the 1990s and the 2000s and Their Relationships with Arctic Sea Ice [J]. Climatic and Environmental Research (in Chinese), 27 (3): 368−382. doi: 10.3878/j.issn.1006-9585.2021.21036

Comparison of Cold Surges across North China between the 1990s and the 2000s and Their Relationships with Arctic Sea Ice

  • The present study compares North China's cold surges in the 1990s and 2000s and their relationships with Arctic sea ice using the observed temperature, two atmospheric reanalyses from NCEP/NCAR, and a set of high-resolution sea ice concentration data from NOAA. In the 1990s, North China experienced less frequent cold surges with a strong relative intensity from 1951 to 2011, resulting from cold air originating from Greenland and invading North China and the western path. Contrary, cold surges in the 2000s occurred most frequently with a weak relative intensity during 1951−2011; the cold air originating from Novaya Zemlya invaded North China along northern path. Since the early 2000s, the sea ice in Novaya Zemlya and Buffin Bay has experienced a significant decrease in autumn and winter, which changed some atmospheric circulation systems. The Eurasian continent experienced a stronger large-scale trough/ridge with a stronger East Asia trough and Siberian High. In addition, weaker westerlies and higher geopotential height were observed around the Arctic in the 2000s compared to those in the 1990s, leading to the difference in cold surges in North China between these two decades.
  • loading

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return