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Volume 20 Issue 5

Sep.  2003

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2003 >  20(5): 661-676

A New North Atlantic Oscillation Index and Its Variability

  • 1.

    State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics LASG,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Air Resources Lab, NOAA, Silver Spring, MD 20910, USA


doi: 10.1007/BF02915394

  • A new North Atlantic Oscillation (NAO) index, the NAOI, is defined as the differences of normalizedsea level pressures regionally zonal-averaged over a broad range of longitudes 80°W-30°E. A comprehensivecomparison of six NAO indices indicates that the new NAOI provides a more faithful representation ofthe spatial-temporal variability associated with the NAO on all timescales. A very high signal-to-noiseratio for the NAOI exists for all seasons, and the life cycle represented by the NAOI describes well theseasonal migration for action centers of the NAO. The NAOI captures a larger fraction of the variance ofsea level pressure over the North Atlantic sector (20°-90°N, 80°W-30°E), on average 10% more than anyother NAO index. There are quite different relationships between the NAOI and surface air temperatureduring winter and summer. A novel feature, however, is that the NAOI is significantly negative correlatedwith surface air temperature over the North Atlantic Ocean between 10°-25°N and 70°-30°W, whetherin winter or summer. From 1873, the NAOI exhibits strong interannual and decadal variability. Itsinterannual variability of the twelve calendar months is obviously phase-locked with the seasonal cycle.Moreover, the annual NAOI exhibits a clearer decadal variability in amplitude than the winter NAOI. Anupward trend is found in the annual NAOI between the 1870s and 1910s, while the other winter NAOindices fail to show this tendency. The annual NAOI exhibits a strongly positive epoch of 50 years between1896 and 1950. After 1950, the variability of the annual NAOI is very similar to that of the winter NAOindices.
  • [1] WU Shu, WU Lixin, LIU Qinyu, Shang-Ping XIE, 2010: Development Processes of the Tropical Pacific Meridional Mode, ADVANCES IN ATMOSPHERIC SCIENCES, 27, 95-99.  doi: 10.1007/s00376-009-8067-x
    [2] Xiaoxin WANG, Dabang JIANG, Xianmei LANG, 2018: Climate Change of 4°C Global Warming above Pre-industrial Levels, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 757-770.  doi: 10.1007/s00376-018-7160-4
    [3] Huang Fei, Zhou Faxiu, Qian Xiaodan, 2002: Interannual and Decadal Variability of the North Pacific Blocking and Its Relationship to SST,Teleconnection and Storm Tracks, ADVANCES IN ATMOSPHERIC SCIENCES, 19, 807-820.  doi: 10.1007/s00376-002-0046-4
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    [5] Yujie JING, Yangchun LI, Yongfu XU, Guangzhou FAN, 2019: Influences of the NAO on the North Atlantic CO2 Fluxes in Winter and Summer on the Interannual Scale, ADVANCES IN ATMOSPHERIC SCIENCES, 36, 1288-1298.  doi: 10.1007/s00376-019-8247-2
    [6] HUANG Jianping, JI Mingxia, Kaz HIGUCHI, Amir SHABBAR, 2006: Temporal Structures of the North Atlantic Oscillation and Its Impact on the Regional Climate Variability, ADVANCES IN ATMOSPHERIC SCIENCES, 23, 23-32.  doi: 10.1007/s00376-006-0003-8
    [7] Ni Yunqi, Zhang Qin, Lin Wuyin, 1991: Seasonal Characteristics and Interannual Variability of Monthly Scale Low-Frequency Oscillation in a Low-Order Global Spectral Model, ADVANCES IN ATMOSPHERIC SCIENCES, 8, 307-316.  doi: 10.1007/BF02919613
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    [10] SUN Jianqi, YUAN Wei, 2009: Contribution of the Sea Surface Temperature over the Mediterranean-Black Sea to the Decadal Shift of the Summer North Atlantic Oscillation, ADVANCES IN ATMOSPHERIC SCIENCES, 26, 717-726.  doi: 10.1007/s00376-009-8210-8
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    [12] Xiao DONG, Feng XUE, 2016: Phase Transition of the Pacific Decadal Oscillation and Decadal Variation of the East Asian Summer Monsoon in the 20th Century, ADVANCES IN ATMOSPHERIC SCIENCES, 33, 330-338.  doi: 10.1007/s00376-015-5130-7
    [13] Jianping LI, Tiejun XIE, Xinxin TANG, Hao WANG, Cheng SUN, Juan FENG, Fei ZHENG, Ruiqiang DING, 2022: Influence of the NAO on Wintertime Surface Air Temperature over East Asia: Multidecadal Variability and Decadal Prediction, ADVANCES IN ATMOSPHERIC SCIENCES, 39, 625-642.  doi: 10.1007/s00376-021-1075-1
    [14] Guanghui ZHOU, Rong-Hua ZHANG, 2022: Structure and Evolution of Decadal Spiciness Variability in the North Pacific during 2004–20, Revealed from Argo Observations, ADVANCES IN ATMOSPHERIC SCIENCES, 39, 953-966.  doi: 10.1007/s00376-021-1358-6
    [15] Tiejun XIE, Ji WANG, Taichen FENG, Ting DING, Liang ZHAO, 2023: Linkage of the Decadal Variability of Extreme Summer Heat in North China with the IPOD since 1981, ADVANCES IN ATMOSPHERIC SCIENCES, 40, 1617-1631.  doi: 10.1007/s00376-023-2304-6
    [16] Kaiming HU, Yingxue LIU, Gang HUANG, Zhuoqi HE, Shang-Min LONG, 2020: Contributions to the Interannual Summer Rainfall Variability in the Mountainous Area of Central China and Their Decadal Changes, ADVANCES IN ATMOSPHERIC SCIENCES, 37, 259-268.  doi: 10.1007/s00376-019-9099-5
    [17] Li'an Xie, Leonard J.Pietrafesa, Kejian Wu, 2002: Interannual and Decadal Variability of Landfalling Tropical Cyclones in the Southeast Coastal States of the United States, ADVANCES IN ATMOSPHERIC SCIENCES, 19, 677-686.  doi: 10.1007/s00376-002-0007-y
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    [20] Qiu Yongyan, 1993: On the Seasonal Transition and the Interannual Variability in Global Kinetic Energy at 500 hPa, Accompanied with Anomalies of Energy during the 1982 / 83 ENSO, ADVANCES IN ATMOSPHERIC SCIENCES, 10, 248-256.  doi: 10.1007/BF02919148
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    • Manuscript History

    Manuscript received: 10 September 2003
    Manuscript revised: 10 September 2003
    通讯作者: 陈斌, bchen63@163.com
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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    A New North Atlantic Oscillation Index and Its Variability

    • 1. State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics LASG,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Air Resources Lab, NOAA, Silver Spring, MD 20910, USA
    • Manuscript received: 2003-09-10
    • Manuscript revised: 2003-09-10

    Abstract: A new North Atlantic Oscillation (NAO) index, the NAOI, is defined as the differences of normalizedsea level pressures regionally zonal-averaged over a broad range of longitudes 80°W-30°E. A comprehensivecomparison of six NAO indices indicates that the new NAOI provides a more faithful representation ofthe spatial-temporal variability associated with the NAO on all timescales. A very high signal-to-noiseratio for the NAOI exists for all seasons, and the life cycle represented by the NAOI describes well theseasonal migration for action centers of the NAO. The NAOI captures a larger fraction of the variance ofsea level pressure over the North Atlantic sector (20°-90°N, 80°W-30°E), on average 10% more than anyother NAO index. There are quite different relationships between the NAOI and surface air temperatureduring winter and summer. A novel feature, however, is that the NAOI is significantly negative correlatedwith surface air temperature over the North Atlantic Ocean between 10°-25°N and 70°-30°W, whetherin winter or summer. From 1873, the NAOI exhibits strong interannual and decadal variability. Itsinterannual variability of the twelve calendar months is obviously phase-locked with the seasonal cycle.Moreover, the annual NAOI exhibits a clearer decadal variability in amplitude than the winter NAOI. Anupward trend is found in the annual NAOI between the 1870s and 1910s, while the other winter NAOindices fail to show this tendency. The annual NAOI exhibits a strongly positive epoch of 50 years between1896 and 1950. After 1950, the variability of the annual NAOI is very similar to that of the winter NAOindices.

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