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Volume 26 Issue 4

Jul.  2009

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2009 >  26(4): 656-665

Harmonious Inter-decadal Changes of July--August Upper Tropospheric Temperature Across the North Atlantic, Eurasian Continent, and North Pacific

  • 1.

    State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029; Graduate University of Chinese Academy of Sciences, Beijing 100049


doi: 10.1007/s00376-009-0920-8

  • The authors have developed an integral view of the inter-decadal variability of July--August (JA) tropospheric temperature across the entire subtropical Northern Hemisphere. Using reanalysis data and complementary balloon-borne measurements, the authors identify one major mode of variability for the period 1958--2001 which exhibits a significant cooling center over East Asia and warming centers over the North Atlantic and North Pacific. The cooling (warming) signals barotropically penetrate through the troposphere, with the strongest anomalies at 200--300 hPa. The amplitude of the cooling over East Asia is stronger than that of the warming over the North Atlantic (North Pacific) by a factor of 2 (3). This dominant mode exhibits a declining tendency for the entire period examined, particularly before 1980. After the mid-1980s, the tendency has leveled off. Variations of the harmonious change of JA upper tropospheric temperature represented by the principal component of Empirical Orthogonal Function analysis exhibit significant negative (positive) correlations with SST anomalies in the eastern tropical Pacific and the western tropical Indian Ocean (mid-latitude North Pacific). Possible mechanisms are discussed.
  • [1] XIN Xiaoge, Zhaoxin LI, YU Rucong, ZHOU Tianjun, 2008: Impacts of Upper Tropospheric Cooling upon the Late Spring Drought in East Asia Simulated by a Regional Climate Model, ADVANCES IN ATMOSPHERIC SCIENCES, 25, 555-562.  doi: 10.1007/s00376-008-0555-x
    [2] WU Bingyi, 2005: Weakening of Indian Summer Monsoon in Recent Decades, ADVANCES IN ATMOSPHERIC SCIENCES, 22, 21-29.  doi: 10.1007/BF02930866
    [3] Yu FU, Hong LIAO, Yang YANG, 2019: Interannual and Decadal Changes in Tropospheric Ozone in China and the Associated Chemistry-Climate Interactions: A Review, ADVANCES IN ATMOSPHERIC SCIENCES, 36, 975-993.  doi: 10.1007/s00376-019-8216-9
    [4] Yang YANG, Rongcai REN, 2017: On the Contrasting Decadal Changes of Diurnal Surface Temperature Range between the Tibetan Plateau and Southeastern China during the 1980s-2000s, ADVANCES IN ATMOSPHERIC SCIENCES, 34, 181-198.  doi: 10.1007/s00376-016-6077-z
    [5] 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
    [6] 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
    [7] HU Dingzhu, TIAN Wenshou, XIE Fei, SHU Jianchuan, and Sandip DHOMSE, , 2014: Effects of Meridional Sea Surface Temperature Changes on Stratospheric Temperature and Circulation, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 888-900.  doi: 10.1007/s00376-013-3152-6
    [8] PENG Jing, DONG Wenjie, YUAN Wenping, ZHANG Yong, 2012: Responses of Grassland and Forest to Temperature and Precipitation Changes in Northeast China, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 1063-1077.  doi: 10.1007/s00376-012-1172-2
    [9] SONG Lianchun, A. J. CANNON, P. H. WHITFIELD, 2007: Changes in Seasonal Patterns of Temperature and Precipitation in China During 1971--2000, ADVANCES IN ATMOSPHERIC SCIENCES, 24, 459-473.  doi: 10.1007/s00376-007-0459-1
    [10] HUANG Jiayou, TAN Benkui, SUO Lingling, HU Yongyun, 2007: Monthly Changes in the Influence of the Arctic Oscillation on Surface Air Temperature over China, ADVANCES IN ATMOSPHERIC SCIENCES, 24, 799-807.  doi: 10.1007/s00376-007-0799-x
    [11] Ding Yihui, T. Iwashima, T. Murakami, 1985: TEMPERATURE CHANGES OVER EURASIA DURING THE LATE SUMMER OF 1979, ADVANCES IN ATMOSPHERIC SCIENCES, 2, 200-214.  doi: 10.1007/BF03179752
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    [13] WANG Jia, ZHI Xiefei, and CHEN Yuwen, 2013: Probabilistic multimodel ensemble prediction of decadal variability of East Asian surface air temperature based on IPCC-AR5 near-term climate simulations, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 1129-1142.  doi: 10.1007/s00376-012-2182-9
    [14] Qian Weihong, Zhu Yafen, Xie An, Ye Qian, 1998: Seasonal and Interannual Variations of Upper Tropospheric Water Vapor Band Brightness Temperature over the Global Monsoon Regions, ADVANCES IN ATMOSPHERIC SCIENCES, 15, 337-345.  doi: 10.1007/s00376-998-0005-9
    [15] Xiaying ZHU, Mingzhu YANG, Ge LIU, Yanju LIU, Weijing LI, Sulan NAN, Linhai SUN, 2022: A Precursory Signal of June–July Precipitation over the Yangtze River Basin: December–January Tropospheric Temperature over the Tibetan Plateau, ADVANCES IN ATMOSPHERIC SCIENCES.  doi: 10.1007/s00376-022-2079-1
    [16] Xiaofei WU, Jiangyu MAO, 2019: Decadal Changes in Interannual Dependence of the Bay of Bengal Summer Monsoon Onset on ENSO Modulated by the Pacific Decadal Oscillation, ADVANCES IN ATMOSPHERIC SCIENCES, 36, 1404-1416.  doi: 10.1007/s00376-019-9043-8
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    • Manuscript History

    Manuscript received: 10 July 2009
    Manuscript revised: 10 July 2009
    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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    Harmonious Inter-decadal Changes of July--August Upper Tropospheric Temperature Across the North Atlantic, Eurasian Continent, and North Pacific

    • 1. State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029; Graduate University of Chinese Academy of Sciences, Beijing 100049
    • Manuscript received: 2009-07-10
    • Manuscript revised: 2009-07-10

    Abstract: The authors have developed an integral view of the inter-decadal variability of July--August (JA) tropospheric temperature across the entire subtropical Northern Hemisphere. Using reanalysis data and complementary balloon-borne measurements, the authors identify one major mode of variability for the period 1958--2001 which exhibits a significant cooling center over East Asia and warming centers over the North Atlantic and North Pacific. The cooling (warming) signals barotropically penetrate through the troposphere, with the strongest anomalies at 200--300 hPa. The amplitude of the cooling over East Asia is stronger than that of the warming over the North Atlantic (North Pacific) by a factor of 2 (3). This dominant mode exhibits a declining tendency for the entire period examined, particularly before 1980. After the mid-1980s, the tendency has leveled off. Variations of the harmonious change of JA upper tropospheric temperature represented by the principal component of Empirical Orthogonal Function analysis exhibit significant negative (positive) correlations with SST anomalies in the eastern tropical Pacific and the western tropical Indian Ocean (mid-latitude North Pacific). Possible mechanisms are discussed.

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