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Volume 19 Issue 5

Sep.  2002

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2002 >  19(5): 807-820

Interannual and Decadal Variability of the North Pacific Blocking and Its Relationship to SST,Teleconnection and Storm Tracks

  • 1.

    Department of Marine Meteorology, Ocean University of Qingdao Qingdao 266003,Department of Marine Meteorology, Ocean University of Qingdao Qingdao 266003,Department of Marine Meteorology, Ocean University of Qingdao Qingdao 266003


doi: 10.1007/s00376-002-0046-4

  • Climatological features of mid-latitude blocking occurring over the North Pacific Ocean during 52winters (December to February) of 1948/1949-1999/2000 are statistically analyzed based onNCEP/NCAR reanalysis data. Significant interannual variation with a period of about 3-7 years as wellas decadal variability is found by wavelet analysis and power spectrum analysis. A decreasing trend of the2-7 year bandscale-averaged variance occurs throughout the 52 years and an abrupt shift from a higherstate to a lower state during the 1970s is also found, which suggests an interdecadal variation of the NorthPacific blocking. The possible relationship between the variability of blocking and sea surface temperature(SST), storm tracks and teleconnection are shown using composite analysis. In strong blocking anomalywinter (SBW), the geopotential height anomaly at 500 hPa exhibits a typical PNA (Pacific-NorthAmerican)-like wave-train pattern in the North Pacific. The storm tracks, representing the activity of tran-sient eddies, extend northeastward to the western coast of North America along the mid latitudes of about40°-50°N, with the SST anomaly exhibiting a Pacific decadal oscillation (PDO) mode at mid-latitude and aLa Nina-like pattern along the equator. Contrasting features appear in weak blocking anomaly winter(WBW).
  • [1] Sun Shuqing, Ying Ming, 1999: Subtropical High Anomalies over the Western Pacific and Its Relations to the Asian Monsoon and SST Anomaly, ADVANCES IN ATMOSPHERIC SCIENCES, 16, 559-568.  doi: 10.1007/s00376-999-0031-2
    [2] Lu Riyu, Huang Ronghui, 1996: Numerical Simulation of the Effect of the SST Anomalies in the Tropical Western Pacific on the Blocking Highs over the Northeastern Asia, ADVANCES IN ATMOSPHERIC SCIENCES, 13, 411-424.  doi: 10.1007/BF03342034
    [3] Hoffman H. N. CHEUNG, Wen ZHOU, 2016: Simple Metrics for Representing East Asian Winter Monsoon Variability: Urals Blocking and Western Pacific Teleconnection Patterns, ADVANCES IN ATMOSPHERIC SCIENCES, 33, 695-705.  doi: 10.1007/s00376-015-5204-6
    [4] Shengping HE, Yongqi GAO, Tore FUREVIK, Huijun WANG, Fei LI, 2018: Teleconnection between Sea Ice in the Barents Sea in June and the Silk Road, Pacific-Japan and East Asian Rainfall Patterns in August, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 52-64.  doi: 10.1007/s00376-017-7029-y
    [5] Pavla PEKAROVA, Jan PEKAR, 2007: Teleconnections of Inter-Annual Streamflow Fluctuation in Slovakia with Arctic Oscillation, North Atlantic Oscillation, Southern Oscillation, and Quasi-Biennial Oscillation Phenomena, ADVANCES IN ATMOSPHERIC SCIENCES, 24, 655-663.  doi: 10.1007/s00376-007-0655-z
    [6] Sining LING, Riyu LU, 2022: Tropical Cyclones over the Western North Pacific Strengthen the East Asia–Pacific Pattern during Summer, ADVANCES IN ATMOSPHERIC SCIENCES, 39, 249-259.  doi: 10.1007/s00376-021-1171-2
    [7] Bo LU, Hong-Li REN, Rosie EADE, Martin ANDREWS, 2018: Indian Ocean SST modes and Their Impacts as Simulated in BCC_CSM1.1(m) and HadGEM3, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 1035-1048.  doi: 10.1007/s00376-018-7279-3
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    [11] Yuanhai FU, Zhongda LIN, Tao WANG, 2021: Simulated Relationship between Wintertime ENSO and East Asian Summer Rainfall: From CMIP3 to CMIP6, ADVANCES IN ATMOSPHERIC SCIENCES, 38, 221-236.  doi: 10.1007/s00376-020-0147-y
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    • Manuscript History

    Manuscript received: 10 September 2002
    Manuscript revised: 10 September 2002
    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

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    Interannual and Decadal Variability of the North Pacific Blocking and Its Relationship to SST,Teleconnection and Storm Tracks

    • 1. Department of Marine Meteorology, Ocean University of Qingdao Qingdao 266003,Department of Marine Meteorology, Ocean University of Qingdao Qingdao 266003,Department of Marine Meteorology, Ocean University of Qingdao Qingdao 266003
    • Manuscript received: 2002-09-10
    • Manuscript revised: 2002-09-10

    Abstract: Climatological features of mid-latitude blocking occurring over the North Pacific Ocean during 52winters (December to February) of 1948/1949-1999/2000 are statistically analyzed based onNCEP/NCAR reanalysis data. Significant interannual variation with a period of about 3-7 years as wellas decadal variability is found by wavelet analysis and power spectrum analysis. A decreasing trend of the2-7 year bandscale-averaged variance occurs throughout the 52 years and an abrupt shift from a higherstate to a lower state during the 1970s is also found, which suggests an interdecadal variation of the NorthPacific blocking. The possible relationship between the variability of blocking and sea surface temperature(SST), storm tracks and teleconnection are shown using composite analysis. In strong blocking anomalywinter (SBW), the geopotential height anomaly at 500 hPa exhibits a typical PNA (Pacific-NorthAmerican)-like wave-train pattern in the North Pacific. The storm tracks, representing the activity of tran-sient eddies, extend northeastward to the western coast of North America along the mid latitudes of about40°-50°N, with the SST anomaly exhibiting a Pacific decadal oscillation (PDO) mode at mid-latitude and aLa Nina-like pattern along the equator. Contrasting features appear in weak blocking anomaly winter(WBW).

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