Journal of the Korean earth science society (한국지구과학회지)

The Korean Earth Science Society (한국지구과학회)
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Variation of the Relationship Between Arctic Oscillation and East Asian Winter Monsoon in CCSM3 Simulation

  • Wie, Jieun (Division of Science Education/Institute of Fusion Science, Chonbuk National University) ;
  • Moon, Byung-Kwon (Division of Science Education/Institute of Fusion Science, Chonbuk National University) ;
  • Lee, Hyomee (Division of Science Education/Institute of Fusion Science, Chonbuk National University)
  • Received : 2018.12.31
  • Accepted : 2019.02.14
  • Published : 2019.02.28
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Abstract

Although recent reports suggest that the negative correlation between the Arctic Oscillation (AO) and the East Asian winter monsoon (EAWM) has been strengthened, it is not clear whether this intermittent relationship is an intrinsic oscillation in the climate system. We investigate the oscillating behavior of the AO-EAWM relationship at decadal time scales using the long-term (500-yr) climate model simulation. The results show that ice cover over the East Siberian Seas is responsible for the change in the coupling strength between AO and EAWM. We found that increased ice cover over these seas strengthens the AO-EAWM linkage, subsequently enhancing cold advection over the East Asia due to anomalous northerly flow via a weakened jet stream. Thus, this strengthened relationship favors more frequent occurrences of cold surges in the EAWM region. Results also indicate that the oscillating relationship between AO and EAWM is a natural variability without anthropogenic drivers, which may help us understand the AO-EAWM linkage under climate change.

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References

  1. Collins, W.D., Bitz, C.M., Blackmon, M.L., Bonan, G.B., Bretherton, C.S., Carton, J.A., Chang, P., Doney, S.C., Hack, J.J., Henderson, T.B., Kiehl, J.T., Large, W.G., McKenna, D.S., Santer, B.D., and Smith, R.D., 2006, The Community Climate System Model version 3 (CCSM3). Journal of Climate, 19, 2122-2143. https://doi.org/10.1175/JCLI3761.1
  2. Gong, D.Y., Wang, S.W., and Zhu, J.H., 2001, East Asian winter monsoon and Arctic oscillation. Geophysical Research Letters, 28, 2073-2076. https://doi.org/10.1029/2000GL012311
  3. Jeong, J.H. and Ho, C.H., 2005, Changes in occurrence of cold surges over east asia in association with arctic oscillation. Geophysical Research Letters, 32, https://doi.org/10.1029/2005GL023024.
  4. Jhun, J.G. and Lee, E.J., 2004, A new East Asian winter monsoon index and associated characteristics of the winter monsoon. Journal of Climate, 17, 711-726. https://doi.org/10.1175/1520-0442(2004)017<0711:ANEAWM>2.0.CO;2
  5. Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, S., White, G., Woollen, J., Zhu, Y., Chelliah, M., Ebisuzaki, W., Higgins, W., Janowiak, J., Mo, K.C., Ropelewski, C., Wang, J., Leetmaa, A., Reynolds, R., Jenne, R., and Joseph, D., 1996, The NCEP/NCAR 40-year reanalysis project. Bulletin of the American Meteorological Society, 77, 437-471. https://doi.org/10.1175/1520-0477(1996)077<0437:TNYRP>2.0.CO;2
  6. Li, F., Wang, H.J., and Gao, Y.Q., 2014, On the strengthened relationship between the East Asian winter monsoon and arctic oscillation: A comparison of 1950-70 and 1983-2012. Journal of Climate, 27, 5075-5091. https://doi.org/10.1175/JCLI-D-13-00335.1
  7. Li, Y.Q. and Yang, S., 2010, A dynamical index for the East Asian Winter monsoon. Journal of Climate, 23, 4255-4262. https://doi.org/10.1175/2010JCLI3375.1
  8. Park, T.W., Ho, C.H., and Yang, S., 2011, Relationship between the Arctic Oscillation and cold surges over East Asia. Journal of Climate, 24, 68-83. https://doi.org/10.1175/2010JCLI3529.1
  9. Park, T.W., Ho, C.H., Yang, S., and Jeong, J.H., 2010, Influences of Arctic Oscillation and Madden-Julian Oscillation on cold surges and heavy snowfalls over Korea: A case study for the winter of 2009-2010. Journal of Geophysical Research-Atmospheres, 115, https://doi.org/10.1029/2010JD014794
  10. Thompson, D.W.J. and Wallace, J.M., 1998, The Arctic Oscillation signature in the wintertime geopotential height and temperature fields. Geophysical Research Letters, 25, 1297-1300. https://doi.org/10.1029/98GL00950
  11. Wang, H.J. and He, S.P., 2012, Weakening relationship between East Asian winter monsoon and ENSO after mid-1970s. Chinese Science Bulletin, 57, 3535-3540. https://doi.org/10.1007/s11434-012-5285-x
  12. Woo, S.H., Kim, B.M., Jeong, J.H., Kim, S.J., and Lim, G.H., 2012, Decadal changes in surface air temperature variability and cold surge characteristics over northeast Asia and their relation with the Arctic Oscillation for the past three decades (1979-2011). Journal of Geophysical Research-Atmospheres, 117, https://doi.org/10.1029/2011JD016929.
  13. Wu, B.Y. and Wang, J., 2002, Winter Arctic Oscillation, Siberian High and East Asian winter monsoon. Geophysical Research Letters, 29, https://doi.org//10.1029/2002GL015373.
  14. Yu, Y.Y., Ren, R.C., and Cai, M., 2015, Comparison of the mass circulation and AO indices as indicators of cold air outbreaks in northern winter. Geophysical Research Letters, 42, 2442-2448. https://doi.org/10.1002/2015GL063676